feat(M8): implement MCP (Model Context Protocol) integration with stdio transport

Milestone M8 implementation adds MCP integration for connecting to external tool servers and resources. New crate: crates/integration/mcp-client - JSON-RPC 2.0 protocol implementation - Stdio transport for spawning MCP server processes - Capability negotiation (initialize handshake) - Tool operations: * tools/list: List available tools from server * tools/call: Invoke tools with arguments - Resource operations: * resources/list: List available resources * resources/read: Read resource contents - Async design using tokio for non-blocking I/O MCP Client Features: - McpClient: Main client with subprocess management - ServerCapabilities: Capability discovery - McpTool: Tool definitions with JSON schema - McpResource: Resource definitions with URI/mime-type - Automatic request ID management - Error handling with proper JSON-RPC error codes Permission Integration: - Added Tool::Mcp to permission system - Pattern matching support for mcp__server__tool format * "filesystem__*" matches all filesystem server tools * "filesystem__read_file" matches specific tool - MCP requires Ask permission in Plan/AcceptEdits modes - MCP allowed in Code mode (like Bash) Tests added (3 new tests with mock Python servers): 1. mcp_server_capability_negotiation - Verifies initialize handshake 2. mcp_tool_invocation - Tests tool listing and calling 3. mcp_resource_reads - Tests resource listing and reading Permission tests added (2 new tests): 1. mcp_server_pattern_matching - Verifies server-level wildcards 2. mcp_exact_tool_matching - Verifies tool-level exact matching All 75 tests passing (up from 68). Note: CLI integration deferred - MCP infrastructure is in place and fully tested. Future work will add MCP server configuration and CLI commands to invoke MCP tools. Protocol: Implements MCP 2024-11-05 specification over stdio transport. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
feat(M7): implement headless mode with JSON and stream-JSON output formats
2025-11-01 20:15:39 +01:00 · 2025-11-01 20:05:23 +01:00 · 2025-11-01 19:57:38 +01:00 · 2025-11-01 19:46:40 +01:00 · 2025-11-01 19:41:42 +01:00 · 2025-11-01 19:31:36 +01:00
72 changed files with 3588 additions and 7686 deletions
--- a/.gitea/workflows/release.yml
+++ b/.gitea/workflows/release.yml
@@ -1,149 +0,0 @@
 name: Release
 on:
  push:
    tags:
      - 'v*'
 jobs:
  build:
    name: Build ${{ matrix.target }}
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        include:
          # Linux
          - os: ubuntu-latest
            target: x86_64-unknown-linux-gnu
            artifact_name: owlen-linux-x86_64-gnu
          - os: ubuntu-latest
            target: x86_64-unknown-linux-musl
            artifact_name: owlen-linux-x86_64-musl
          - os: ubuntu-latest
            target: aarch64-unknown-linux-gnu
            artifact_name: owlen-linux-aarch64-gnu
          - os: ubuntu-latest
            target: aarch64-unknown-linux-musl
            artifact_name: owlen-linux-aarch64-musl
          - os: ubuntu-latest
            target: armv7-unknown-linux-gnueabihf
            artifact_name: owlen-linux-armv7-gnu
          - os: ubuntu-latest
            target: armv7-unknown-linux-musleabihf
            artifact_name: owlen-linux-armv7-musl
          # Windows
          - os: windows-latest
            target: x86_64-pc-windows-msvc
            artifact_name: owlen-windows-x86_64
          - os: windows-latest
            target: aarch64-pc-windows-msvc
            artifact_name: owlen-windows-aarch64
          # macOS
          - os: macos-latest
            target: x86_64-apple-darwin
            artifact_name: owlen-macos-x86_64
          - os: macos-latest
            target: aarch64-apple-darwin
            artifact_name: owlen-macos-aarch64
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
      - name: Install Rust
        uses: https://github.com/dtolnay/rust-toolchain@stable
        with:
          targets: ${{ matrix.target }}
      - name: Install cross-compilation tools (Linux)
        if: runner.os == 'Linux'
        run: |
          sudo apt-get update
          sudo apt-get install -y musl-tools gcc-aarch64-linux-gnu gcc-arm-linux-gnueabihf
      - name: Build
        shell: bash
        run: |
          case "${{ matrix.target }}" in
            aarch64-unknown-linux-gnu)
              export CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER=aarch64-linux-gnu-gcc
              ;;
            aarch64-unknown-linux-musl)
              export CARGO_TARGET_AARCH64_UNKNOWN_LINUX_MUSL_LINKER=aarch64-linux-gnu-gcc
              export CC_aarch64_unknown_linux_musl=aarch64-linux-gnu-gcc
              ;;
            armv7-unknown-linux-gnueabihf)
              export CARGO_TARGET_ARMV7_UNKNOWN_LINUX_GNUEABIHF_LINKER=arm-linux-gnueabihf-gcc
              ;;
            armv7-unknown-linux-musleabihf)
              export CARGO_TARGET_ARMV7_UNKNOWN_LINUX_MUSLEABIHF_LINKER=arm-linux-gnueabihf-gcc
              export CC_armv7_unknown_linux_musleabihf=arm-linux-gnueabihf-gcc
              ;;
          esac
          cargo build --release --all-features --target ${{ matrix.target }}
      - name: Package binaries (Unix)
        if: runner.os != 'Windows'
        run: |
          mkdir -p dist
          cp target/${{ matrix.target }}/release/owlen dist/owlen
          cp target/${{ matrix.target }}/release/owlen-code dist/owlen-code
          cd dist
          tar czf ${{ matrix.artifact_name }}.tar.gz owlen owlen-code
          cd ..
          mv dist/${{ matrix.artifact_name }}.tar.gz .
      - name: Package binaries (Windows)
        if: runner.os == 'Windows'
        shell: bash
        run: |
          mkdir -p dist
          cp target/${{ matrix.target }}/release/owlen.exe dist/owlen.exe
          cp target/${{ matrix.target }}/release/owlen-code.exe dist/owlen-code.exe
          cd dist
          7z a -tzip ../${{ matrix.artifact_name }}.zip owlen.exe owlen-code.exe
      - name: Upload artifact
        uses: actions/upload-artifact@v4
        with:
          name: ${{ matrix.artifact_name }}
          path: |
            ${{ matrix.artifact_name }}.tar.gz
            ${{ matrix.artifact_name }}.zip
  release:
    name: Create Release
    needs: build
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
      - name: Download all artifacts
        uses: actions/download-artifact@v4
        with:
          path: artifacts
      - name: Create source tarball
        run: |
          git archive --format=tar.gz --prefix=owlen/ -o owlen-${{ github.ref_name }}.tar.gz ${{ github.ref_name }}
      - name: Generate checksums
        shell: bash
        run: |
          cd artifacts
          find . -name "*.tar.gz" -exec mv {} . \; 2>/dev/null || true
          find . -name "*.zip" -exec mv {} . \; 2>/dev/null || true
          cd ..
          mv artifacts/*.tar.gz . 2>/dev/null || true
          mv artifacts/*.zip . 2>/dev/null || true
          sha256sum *.tar.gz *.zip > checksums.txt 2>/dev/null || sha256sum * > checksums.txt
      - name: Create Release
        uses: https://gitea.com/gitea/release-action@main
        with:
          files: |
            *.tar.gz
            *.zip
            checksums.txt
          api_key: ${{ secrets.RELEASE_TOKEN }}
--- a/.gitignore
+++ b/.gitignore
@@ -1,9 +1,12 @@
 ### Custom
 AGENTS.md
 CLAUDE.md
 ### Rust template
 # Generated by Cargo
 # will have compiled files and executables
 debug/
 target/
 dev/
 # Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
 # More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
@@ -15,17 +18,10 @@ Cargo.lock
 # MSVC Windows builds of rustc generate these, which store debugging information
 *.pdb
 # RustRover
 #  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
 #  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
 #  and can be added to the global gitignore or merged into this file.  For a more nuclear
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 #.idea/
 ### JetBrains template
 # Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider
 # Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
 .idea/
 # User-specific stuff
 .idea/**/workspace.xml
 .idea/**/tasks.xml
@@ -56,14 +52,15 @@ Cargo.lock
 # When using Gradle or Maven with auto-import, you should exclude module files,
 # since they will be recreated, and may cause churn.  Uncomment if using
 # auto-import.
-# .idea/artifacts
+.idea/artifacts
-# .idea/compiler.xml
+.idea/compiler.xml
-# .idea/jarRepositories.xml
+.idea/jarRepositories.xml
-# .idea/modules.xml
+.idea/modules.xml
-# .idea/*.iml
+.idea/*.iml
-# .idea/modules
+.idea/modules
-# *.iml
+*.iml
-# *.ipr
+*.ipr
 .idea
 # CMake
 cmake-build-*/
@@ -101,3 +98,8 @@ fabric.properties
 # Android studio 3.1+ serialized cache file
 .idea/caches/build_file_checksums.ser
 ### rust-analyzer template
 # Can be generated by other build systems other than cargo (ex: bazelbuild/rust_rules)
 rust-project.json
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,64 +1,18 @@
 [workspace]
 resolver = "2"
 members = [
-    "crates/owlen-core",
+    "crates/app/cli",
-    "crates/owlen-tui",
+    "crates/llm/ollama",
-    "crates/owlen-cli",
+    "crates/platform/config",
-    "crates/owlen-ollama",
+    "crates/platform/hooks",
    "crates/platform/permissions",
    "crates/tools/bash",
    "crates/tools/fs",
    "crates/tools/slash",
    "crates/integration/mcp-client",
 ]
-exclude = []
+resolver = "2"
 [workspace.package]
-version = "0.1.0"
+edition = "2024"
 edition = "2021"
 authors = ["Owlibou"]
 license = "AGPL-3.0"
-repository = "https://somegit.dev/Owlibou/owlen"
+rust-version = "1.91"
 homepage = "https://somegit.dev/Owlibou/owlen"
 keywords = ["llm", "tui", "cli", "ollama", "chat"]
 categories = ["command-line-utilities"]
 [workspace.dependencies]
 # Async runtime and utilities
 tokio = { version = "1.0", features = ["full"] }
 tokio-stream = "0.1"
 tokio-util = { version = "0.7", features = ["rt"] }
 futures = "0.3"
 futures-util = "0.3"
 # TUI framework
 ratatui = "0.28"
 crossterm = "0.28"
 tui-textarea = "0.6"
 # HTTP client and JSON handling
 reqwest = { version = "0.12", features = ["json", "stream"] }
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 # Utilities
 uuid = { version = "1.0", features = ["v4", "serde"] }
 anyhow = "1.0"
 thiserror = "1.0"
 # Configuration
 toml = "0.8"
 shellexpand = "3.1"
 # Database
 sled = "0.34"
 # For better text handling
 textwrap = "0.16"
 # Async traits
 async-trait = "0.1"
 # CLI framework
 clap = { version = "4.0", features = ["derive"] }
 # Dev dependencies
 tempfile = "3.8"
 tokio-test = "0.4"
 # For more keys and their definitions, see https://doc.rust-lang.org/cargo/reference/manifest.html
--- a/662
+++ b/662
@@ -1,662 +0,0 @@
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 Also add information on how to contact you by electronic and paper mail.
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 For more information on this, and how to apply and follow the GNU AGPL, see
 <https://www.gnu.org/licenses/>.
--- a/45
+++ b/45
@@ -1,45 +0,0 @@
 # Maintainer: Owlibou
 pkgname=owlen
 pkgver=0.1.0
 pkgrel=1
 pkgdesc="Terminal User Interface LLM client for Ollama with chat and code assistance features"
 arch=('x86_64' 'aarch64')
 url="https://somegit.dev/Owlibou/owlen"
 license=('AGPL-3.0-only')
 depends=('gcc-libs')
 makedepends=('cargo' 'git')
 source=("${pkgname}-${pkgver}.tar.gz::https://somegit.dev/Owlibou/owlen/archive/v${pkgver}.tar.gz")
 sha256sums=('SKIP')  # Update this after first release
 prepare() {
    cd "$pkgname"
    export RUSTUP_TOOLCHAIN=stable
    cargo fetch --locked --target "$(rustc -vV | sed -n 's/host: //p')"
 }
 build() {
    cd "$pkgname"
    export RUSTUP_TOOLCHAIN=stable
    export CARGO_TARGET_DIR=target
    cargo build --frozen --release --all-features
 }
 check() {
    cd "$pkgname"
    export RUSTUP_TOOLCHAIN=stable
    cargo test --frozen --all-features
 }
 package() {
    cd "$pkgname"
    # Install binaries
    install -Dm755 "target/release/owlen" "$pkgdir/usr/bin/owlen"
    install -Dm755 "target/release/owlen-code" "$pkgdir/usr/bin/owlen-code"
    # Install license
    install -Dm644 LICENSE "$pkgdir/usr/share/licenses/$pkgname/LICENSE"
    # Install documentation
    install -Dm644 README.md "$pkgdir/usr/share/doc/$pkgname/README.md"
 }
--- a/README.md
+++ b/README.md
@@ -1,279 +0,0 @@
 # OWLEN
 > Terminal-native assistant for running local language models with a comfortable TUI.
 ![Status](https://img.shields.io/badge/status-alpha-yellow)
 ![Version](https://img.shields.io/badge/version-0.1.0-blue)
 ![Rust](https://img.shields.io/badge/made_with-Rust-ffc832?logo=rust&logoColor=white)
 ![License](https://img.shields.io/badge/license-AGPL--3.0-blue)
 ## Alpha Status
 - This project is currently in **alpha** (v0.1.0) and under active development.
 - Core features are functional but expect occasional bugs and missing polish.
 - Breaking changes may occur between releases as we refine the API.
 - Feedback, bug reports, and contributions are very welcome!
 ## What Is OWLEN?
 OWLEN is a Rust-powered, terminal-first interface for interacting with local large
 language models. It provides a responsive chat workflow that runs against
 [Ollama](https://ollama.com/) with a focus on developer productivity, vim-style navigation,
 and seamless session management—all without leaving your terminal.
 ## Screenshots
 ### Initial Layout
 ![OWLEN TUI Layout](images/layout.png)
 The OWLEN interface features a clean, multi-panel layout with vim-inspired navigation. See more screenshots in the [`images/`](images/) directory including:
 - Full chat conversations (`chat_view.png`)
 - Help menu (`help.png`)
 - Model selection (`model_select.png`)
 - Visual selection mode (`select_mode.png`)
 ## Features
 ### Chat Client (`owlen`)
 - **Vim-style Navigation** - Normal, editing, visual, and command modes
 - **Streaming Responses** - Real-time token streaming from Ollama
 - **Multi-Panel Interface** - Separate panels for chat, thinking content, and input
 - **Advanced Text Editing** - Multi-line input with `tui-textarea`, history navigation
 - **Visual Selection & Clipboard** - Yank/paste text across panels
 - **Flexible Scrolling** - Half-page, full-page, and cursor-based navigation
 - **Model Management** - Interactive model and provider selection (press `m`)
 - **Session Management** - Start new conversations, clear history
 - **Thinking Mode Support** - Dedicated panel for extended reasoning content
 - **Bracketed Paste** - Safe paste handling for multi-line content
 ### Code Client (`owlen-code`) [Experimental]
 - All chat client features
 - Optimized system prompt for programming assistance
 - Foundation for future code-specific features
 ### Core Infrastructure
 - **Modular Architecture** - Separated core logic, TUI components, and providers
 - **Provider System** - Extensible provider trait (currently: Ollama)
 - **Session Controller** - Unified conversation and state management
 - **Configuration Management** - TOML-based config with sensible defaults
 - **Message Formatting** - Markdown rendering, thinking content extraction
 - **Async Runtime** - Built on Tokio for efficient streaming
 ## Getting Started
 ### Prerequisites
 - Rust 1.75+ and Cargo (`rustup` recommended)
 - A running Ollama instance with at least one model pulled
  (defaults to `http://localhost:11434`)
 - A terminal that supports 256 colors
 ### Clone and Build
 ```bash
 git clone https://somegit.dev/Owlibou/owlen.git
 cd owlen
 cargo build --release
 ```
 ### Run the Chat Client
 Make sure Ollama is running, then launch:
 ```bash
 ./target/release/owlen
 # or during development:
 cargo run --bin owlen
 ```
 ### (Optional) Try the Code Client
 The coding-focused TUI is experimental:
 ```bash
 cargo build --release --bin owlen-code --features code-client
 ./target/release/owlen-code
 ```
 ## Using the TUI
 ### Mode System (Vim-inspired)
 **Normal Mode** (default):
 - `i` / `Enter` - Enter editing mode
 - `a` - Append (move right and enter editing mode)
 - `A` - Append at end of line
 - `I` - Insert at start of line
 - `o` - Insert new line below
 - `O` - Insert new line above
 - `v` - Enter visual mode (text selection)
 - `:` - Enter command mode
 - `h/j/k/l` - Navigate left/down/up/right
 - `w/b/e` - Word navigation
 - `0/$` - Jump to line start/end
 - `gg` - Jump to top
 - `G` - Jump to bottom
 - `Ctrl-d/u` - Half-page scroll
 - `Ctrl-f/b` - Full-page scroll
 - `Tab` - Cycle focus between panels
 - `p` - Paste from clipboard
 - `dd` - Clear input buffer
 - `q` - Quit
 **Editing Mode**:
 - `Esc` - Return to normal mode
 - `Enter` - Send message and return to normal mode
 - `Ctrl-J` / `Shift-Enter` - Insert newline
 - `Ctrl-↑/↓` - Navigate input history
 - Paste events handled automatically
 **Visual Mode**:
 - `j/k/h/l` - Extend selection
 - `w/b/e` - Word-based selection
 - `y` - Yank (copy) selection
 - `d` - Cut selection (Input panel only)
 - `Esc` - Cancel selection
 **Command Mode**:
 - `:q` / `:quit` - Quit application
 - `:c` / `:clear` - Clear conversation
 - `:m` / `:model` - Open model selector
 - `:n` / `:new` - Start new conversation
 - `:h` / `:help` - Show help
 ### Panel Management
 - Three panels: Chat, Thinking, and Input
 - `Tab` / `Shift-Tab` - Cycle focus forward/backward
 - Focused panel receives scroll and navigation commands
 - Thinking panel appears when extended reasoning is available
 ## Configuration
 OWLEN stores configuration in `~/.config/owlen/config.toml`. The file is created
 on first run and can be edited to customize behavior:
 ```toml
 [general]
 default_model = "llama3.2:latest"
 default_provider = "ollama"
 enable_streaming = true
 project_context_file = "OWLEN.md"
 [providers.ollama]
 provider_type = "ollama"
 base_url = "http://localhost:11434"
 timeout = 300
 ```
 Configuration is automatically saved when you change models or providers.
 ## Repository Layout
 ```
 owlen/
 ├── crates/
 │   ├── owlen-core/       # Core types, session management, shared UI components
 │   ├── owlen-ollama/     # Ollama provider implementation
 │   ├── owlen-tui/        # TUI components (chat_app, code_app, rendering)
 │   └── owlen-cli/        # Binary entry points (owlen, owlen-code)
 ├── LICENSE               # AGPL-3.0 License
 ├── Cargo.toml            # Workspace configuration
 └── README.md
 ```
 ### Architecture Highlights
 - **owlen-core**: Provider-agnostic core with session controller, UI primitives (AutoScroll, InputMode, FocusedPanel), and shared utilities
 - **owlen-tui**: Ratatui-based UI implementation with vim-style modal editing
 - **Separation of Concerns**: Clean boundaries between business logic, presentation, and provider implementations
 ## Development
 ### Building
 ```bash
 # Debug build
 cargo build
 # Release build
 cargo build --release
 # Build with all features
 cargo build --all-features
 # Run tests
 cargo test
 # Check code
 cargo clippy
 cargo fmt
 ```
 ### Development Notes
 - Standard Rust workflows apply (`cargo fmt`, `cargo clippy`, `cargo test`)
 - Codebase uses async Rust (`tokio`) for event handling and streaming
 - Configuration is cached in `~/.config/owlen` (wipe to reset)
 - UI components are extensively tested in `owlen-core/src/ui.rs`
 ## Roadmap
 ### Completed ✓
 - [x] Streaming responses with real-time display
 - [x] Autoscroll and viewport management
 - [x] Push user message before loading LLM response
 - [x] Thinking mode support with dedicated panel
 - [x] Vim-style modal editing (Normal, Visual, Command modes)
 - [x] Multi-panel focus management
 - [x] Text selection and clipboard functionality
 - [x] Comprehensive keyboard navigation
 - [x] Bracketed paste support
 ### In Progress
 - [ ] Theming options and color customization
 - [ ] Enhanced configuration UX (in-app settings)
 - [ ] Chat history management (save/load/export)
 ### Planned
 - [ ] Code Client Enhancement
  - [ ] In-project code navigation
  - [ ] Syntax highlighting for code blocks
  - [ ] File tree browser integration
  - [ ] Project-aware context management
  - [ ] Code snippets and templates
 - [ ] Additional LLM Providers
  - [ ] OpenAI API support
  - [ ] Anthropic Claude support
  - [ ] Local model providers (llama.cpp, etc.)
 - [ ] Advanced Features
  - [ ] Conversation search and filtering
  - [ ] Multi-session management
  - [ ] Export conversations (Markdown, JSON)
  - [ ] Custom keybindings
  - [ ] Plugin system
 ## Contributing
 Contributions are welcome! Here's how to get started:
 1. Fork the repository
 2. Create a feature branch (`git checkout -b feature/amazing-feature`)
 3. Make your changes and add tests
 4. Run `cargo fmt` and `cargo clippy`
 5. Commit your changes (`git commit -m 'Add amazing feature'`)
 6. Push to the branch (`git push origin feature/amazing-feature`)
 7. Open a Pull Request
 Please open an issue first for significant changes to discuss the approach.
 ## License
 This project is licensed under the GNU Affero General Public License v3.0 (AGPL-3.0) - see the [LICENSE](LICENSE) file for details.
 ## Acknowledgments
 Built with:
 - [ratatui](https://ratatui.rs/) - Terminal UI framework
 - [crossterm](https://github.com/crossterm-rs/crossterm) - Cross-platform terminal manipulation
 - [tokio](https://tokio.rs/) - Async runtime
 - [Ollama](https://ollama.com/) - Local LLM runtime
 ---
 **Status**: Alpha v0.1.0 | **License**: AGPL-3.0 | **Made with Rust** 🦀
--- a/crates/app/cli/.gitignore
+++ b/crates/app/cli/.gitignore
@@ -0,0 +1,22 @@
 /target
 ### Rust template
 # Generated by Cargo
 # will have compiled files and executables
 debug/
 target/
 # Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
 # More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
 Cargo.lock
 # These are backup files generated by rustfmt
 **/*.rs.bk
 # MSVC Windows builds of rustc generate these, which store debugging information
 *.pdb
 ### rust-analyzer template
 # Can be generated by other build systems other than cargo (ex: bazelbuild/rust_rules)
 rust-project.json
--- a/crates/app/cli/Cargo.toml
+++ b/crates/app/cli/Cargo.toml
@@ -0,0 +1,28 @@
 [package]
 name = "owlen"
 version = "0.1.0"
 edition.workspace = true
 license.workspace = true
 rust-version.workspace = true
 [dependencies]
 clap = { version = "4.5", features = ["derive"] }
 tokio = { version = "1.39", features = ["macros", "rt-multi-thread"] }
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 color-eyre = "0.6"
 llm-ollama = { path = "../../llm/ollama" }
 tools-fs = { path = "../../tools/fs" }
 tools-bash = { path = "../../tools/bash" }
 tools-slash = { path = "../../tools/slash" }
 config-agent = { package = "config-agent", path = "../../platform/config" }
 permissions = { path = "../../platform/permissions" }
 hooks = { path = "../../platform/hooks" }
 futures-util = "0.3.31"
 [dev-dependencies]
 assert_cmd = "2.0"
 predicates = "3.1"
 httpmock = "0.7"
 tokio = { version = "1.39", features = ["macros", "rt-multi-thread"] }
 tempfile = "3.23.0"
--- a/crates/app/cli/src/main.rs
+++ b/crates/app/cli/src/main.rs
@@ -0,0 +1,580 @@
 use clap::{Parser, ValueEnum};
 use color_eyre::eyre::{Result, eyre};
 use config_agent::load_settings;
 use futures_util::TryStreamExt;
 use hooks::{HookEvent, HookManager, HookResult};
 use llm_ollama::{OllamaClient, OllamaOptions, types::ChatMessage};
 use permissions::{PermissionDecision, Tool};
 use serde::Serialize;
 use std::io::{self, Write};
 use std::time::{SystemTime, UNIX_EPOCH};
 #[derive(Debug, Clone, Copy, ValueEnum)]
 enum OutputFormat {
    Text,
    Json,
    StreamJson,
 }
 #[derive(Serialize)]
 struct SessionOutput {
    session_id: String,
    messages: Vec<serde_json::Value>,
    stats: Stats,
    #[serde(skip_serializing_if = "Option::is_none")]
    result: Option<serde_json::Value>,
    #[serde(skip_serializing_if = "Option::is_none")]
    tool: Option<String>,
 }
 #[derive(Serialize)]
 struct Stats {
    total_tokens: u64,
    #[serde(skip_serializing_if = "Option::is_none")]
    prompt_tokens: Option<u64>,
    #[serde(skip_serializing_if = "Option::is_none")]
    completion_tokens: Option<u64>,
    duration_ms: u64,
 }
 #[derive(Serialize)]
 struct StreamEvent {
    #[serde(rename = "type")]
    event_type: String,
    #[serde(skip_serializing_if = "Option::is_none")]
    session_id: Option<String>,
    #[serde(skip_serializing_if = "Option::is_none")]
    content: Option<String>,
    #[serde(skip_serializing_if = "Option::is_none")]
    stats: Option<Stats>,
 }
 fn generate_session_id() -> String {
    let timestamp = SystemTime::now()
        .duration_since(UNIX_EPOCH)
        .unwrap()
        .as_millis();
    format!("session-{}", timestamp)
 }
 fn output_tool_result(
    format: OutputFormat,
    tool: &str,
    result: serde_json::Value,
    session_id: &str,
 ) -> Result<()> {
    match format {
        OutputFormat::Text => {
            // For text, just print the result as-is
            if let Some(s) = result.as_str() {
                println!("{}", s);
            } else {
                println!("{}", serde_json::to_string_pretty(&result)?);
            }
        }
        OutputFormat::Json => {
            let output = SessionOutput {
                session_id: session_id.to_string(),
                messages: vec![],
                stats: Stats {
                    total_tokens: 0,
                    prompt_tokens: None,
                    completion_tokens: None,
                    duration_ms: 0,
                },
                result: Some(result),
                tool: Some(tool.to_string()),
            };
            println!("{}", serde_json::to_string(&output)?);
        }
        OutputFormat::StreamJson => {
            // For stream-json, emit session_start, result, and session_end
            let session_start = StreamEvent {
                event_type: "session_start".to_string(),
                session_id: Some(session_id.to_string()),
                content: None,
                stats: None,
            };
            println!("{}", serde_json::to_string(&session_start)?);
            let result_event = StreamEvent {
                event_type: "tool_result".to_string(),
                session_id: None,
                content: Some(serde_json::to_string(&result)?),
                stats: None,
            };
            println!("{}", serde_json::to_string(&result_event)?);
            let session_end = StreamEvent {
                event_type: "session_end".to_string(),
                session_id: None,
                content: None,
                stats: Some(Stats {
                    total_tokens: 0,
                    prompt_tokens: None,
                    completion_tokens: None,
                    duration_ms: 0,
                }),
            };
            println!("{}", serde_json::to_string(&session_end)?);
        }
    }
    Ok(())
 }
 #[derive(clap::Subcommand, Debug)]
 enum Cmd {
    Read { path: String },
    Glob { pattern: String },
    Grep { root: String, pattern: String },
    Write { path: String, content: String },
    Edit { path: String, old_string: String, new_string: String },
    Bash { command: String, #[arg(long)] timeout: Option<u64> },
    Slash { command_name: String, args: Vec<String> },
 }
 #[derive(Parser, Debug)]
 #[command(name = "code", version)]
 struct Args {
    #[arg(long)]
    ollama_url: Option<String>,
    #[arg(long)]
    model: Option<String>,
    #[arg(long)]
    api_key: Option<String>,
    #[arg(long)]
    print: bool,
    /// Override the permission mode (plan, acceptEdits, code)
    #[arg(long)]
    mode: Option<String>,
    /// Output format (text, json, stream-json)
    #[arg(long, value_enum, default_value = "text")]
    output_format: OutputFormat,
    #[arg()]
    prompt: Vec<String>,
    #[command(subcommand)]
    cmd: Option<Cmd>,
 }
 #[tokio::main]
 async fn main() -> Result<()> {
    color_eyre::install()?;
    let args = Args::parse();
    let mut settings = load_settings(None).unwrap_or_default();
    // Override mode if specified via CLI
    if let Some(mode) = args.mode {
        settings.mode = mode;
    }
    // Create permission manager from settings
    let perms = settings.create_permission_manager();
    // Create hook manager
    let hook_mgr = HookManager::new(".");
    // Generate session ID
    let session_id = generate_session_id();
    let output_format = args.output_format;
    if let Some(cmd) = args.cmd {
        match cmd {
            Cmd::Read { path } => {
                // Check permission
                match perms.check(Tool::Read, None) {
                    PermissionDecision::Allow => {
                        // Check PreToolUse hook
                        let event = HookEvent::PreToolUse {
                            tool: "Read".to_string(),
                            args: serde_json::json!({"path": &path}),
                        };
                        match hook_mgr.execute(&event, Some(5000)).await? {
                            HookResult::Deny => {
                                return Err(eyre!("Hook denied Read operation"));
                            }
                            HookResult::Allow => {}
                        }
                        let s = tools_fs::read_file(&path)?;
                        output_tool_result(output_format, "Read", serde_json::json!(s), &session_id)?;
                        return Ok(());
                    }
                    PermissionDecision::Ask => {
                        return Err(eyre!(
                            "Permission denied: Read operation requires approval. Use --mode code to allow."
                        ));
                    }
                    PermissionDecision::Deny => {
                        return Err(eyre!("Permission denied: Read operation is blocked."));
                    }
                }
            }
            Cmd::Glob { pattern } => {
                // Check permission
                match perms.check(Tool::Glob, None) {
                    PermissionDecision::Allow => {
                        // Check PreToolUse hook
                        let event = HookEvent::PreToolUse {
                            tool: "Glob".to_string(),
                            args: serde_json::json!({"pattern": &pattern}),
                        };
                        match hook_mgr.execute(&event, Some(5000)).await? {
                            HookResult::Deny => {
                                return Err(eyre!("Hook denied Glob operation"));
                            }
                            HookResult::Allow => {}
                        }
                        for p in tools_fs::glob_list(&pattern)? {
                            println!("{}", p);
                        }
                        return Ok(());
                    }
                    PermissionDecision::Ask => {
                        return Err(eyre!(
                            "Permission denied: Glob operation requires approval. Use --mode code to allow."
                        ));
                    }
                    PermissionDecision::Deny => {
                        return Err(eyre!("Permission denied: Glob operation is blocked."));
                    }
                }
            }
            Cmd::Grep { root, pattern } => {
                // Check permission
                match perms.check(Tool::Grep, None) {
                    PermissionDecision::Allow => {
                        // Check PreToolUse hook
                        let event = HookEvent::PreToolUse {
                            tool: "Grep".to_string(),
                            args: serde_json::json!({"root": &root, "pattern": &pattern}),
                        };
                        match hook_mgr.execute(&event, Some(5000)).await? {
                            HookResult::Deny => {
                                return Err(eyre!("Hook denied Grep operation"));
                            }
                            HookResult::Allow => {}
                        }
                        for (path, line_number, text) in tools_fs::grep(&root, &pattern)? {
                            println!("{path}:{line_number}:{text}")
                        }
                        return Ok(());
                    }
                    PermissionDecision::Ask => {
                        return Err(eyre!(
                            "Permission denied: Grep operation requires approval. Use --mode code to allow."
                        ));
                    }
                    PermissionDecision::Deny => {
                        return Err(eyre!("Permission denied: Grep operation is blocked."));
                    }
                }
            }
            Cmd::Write { path, content } => {
                // Check permission
                match perms.check(Tool::Write, None) {
                    PermissionDecision::Allow => {
                        // Check PreToolUse hook
                        let event = HookEvent::PreToolUse {
                            tool: "Write".to_string(),
                            args: serde_json::json!({"path": &path, "content": &content}),
                        };
                        match hook_mgr.execute(&event, Some(5000)).await? {
                            HookResult::Deny => {
                                return Err(eyre!("Hook denied Write operation"));
                            }
                            HookResult::Allow => {}
                        }
                        tools_fs::write_file(&path, &content)?;
                        println!("File written: {}", path);
                        return Ok(());
                    }
                    PermissionDecision::Ask => {
                        return Err(eyre!(
                            "Permission denied: Write operation requires approval. Use --mode acceptEdits or --mode code to allow."
                        ));
                    }
                    PermissionDecision::Deny => {
                        return Err(eyre!("Permission denied: Write operation is blocked."));
                    }
                }
            }
            Cmd::Edit { path, old_string, new_string } => {
                // Check permission
                match perms.check(Tool::Edit, None) {
                    PermissionDecision::Allow => {
                        // Check PreToolUse hook
                        let event = HookEvent::PreToolUse {
                            tool: "Edit".to_string(),
                            args: serde_json::json!({"path": &path, "old_string": &old_string, "new_string": &new_string}),
                        };
                        match hook_mgr.execute(&event, Some(5000)).await? {
                            HookResult::Deny => {
                                return Err(eyre!("Hook denied Edit operation"));
                            }
                            HookResult::Allow => {}
                        }
                        tools_fs::edit_file(&path, &old_string, &new_string)?;
                        println!("File edited: {}", path);
                        return Ok(());
                    }
                    PermissionDecision::Ask => {
                        return Err(eyre!(
                            "Permission denied: Edit operation requires approval. Use --mode acceptEdits or --mode code to allow."
                        ));
                    }
                    PermissionDecision::Deny => {
                        return Err(eyre!("Permission denied: Edit operation is blocked."));
                    }
                }
            }
            Cmd::Bash { command, timeout } => {
                // Check permission with command context for pattern matching
                match perms.check(Tool::Bash, Some(&command)) {
                    PermissionDecision::Allow => {
                        // Check PreToolUse hook
                        let event = HookEvent::PreToolUse {
                            tool: "Bash".to_string(),
                            args: serde_json::json!({"command": &command, "timeout": timeout}),
                        };
                        match hook_mgr.execute(&event, Some(5000)).await? {
                            HookResult::Deny => {
                                return Err(eyre!("Hook denied Bash operation"));
                            }
                            HookResult::Allow => {}
                        }
                        let mut session = tools_bash::BashSession::new().await?;
                        let output = session.execute(&command, timeout).await?;
                        // Print stdout
                        if !output.stdout.is_empty() {
                            print!("{}", output.stdout);
                        }
                        // Print stderr to stderr
                        if !output.stderr.is_empty() {
                            eprint!("{}", output.stderr);
                        }
                        session.close().await?;
                        // Exit with same code as command
                        if !output.success {
                            std::process::exit(output.exit_code);
                        }
                        return Ok(());
                    }
                    PermissionDecision::Ask => {
                        return Err(eyre!(
                            "Permission denied: Bash operation requires approval. Use --mode code to allow."
                        ));
                    }
                    PermissionDecision::Deny => {
                        return Err(eyre!("Permission denied: Bash operation is blocked."));
                    }
                }
            }
            Cmd::Slash { command_name, args } => {
                // Check permission
                match perms.check(Tool::SlashCommand, None) {
                    PermissionDecision::Allow => {
                        // Check PreToolUse hook
                        let event = HookEvent::PreToolUse {
                            tool: "SlashCommand".to_string(),
                            args: serde_json::json!({"command_name": &command_name, "args": &args}),
                        };
                        match hook_mgr.execute(&event, Some(5000)).await? {
                            HookResult::Deny => {
                                return Err(eyre!("Hook denied SlashCommand operation"));
                            }
                            HookResult::Allow => {}
                        }
                        // Look for command file in .owlen/commands/
                        let command_path = format!(".owlen/commands/{}.md", command_name);
                        // Read the command file
                        let content = match tools_fs::read_file(&command_path) {
                            Ok(c) => c,
                            Err(_) => {
                                return Err(eyre!(
                                    "Slash command '{}' not found at {}",
                                    command_name,
                                    command_path
                                ));
                            }
                        };
                        // Parse with arguments
                        let args_refs: Vec<&str> = args.iter().map(|s| s.as_str()).collect();
                        let slash_cmd = tools_slash::parse_slash_command(&content, &args_refs)?;
                        // Resolve file references
                        let resolved_body = slash_cmd.resolve_file_refs()?;
                        // Print the resolved command body
                        println!("{}", resolved_body);
                        return Ok(());
                    }
                    PermissionDecision::Ask => {
                        return Err(eyre!(
                            "Permission denied: Slash command requires approval. Use --mode code to allow."
                        ));
                    }
                    PermissionDecision::Deny => {
                        return Err(eyre!("Permission denied: Slash command is blocked."));
                    }
                }
            }
        }
    }
    let prompt = if args.prompt.is_empty() {
        "Say hello".to_string()
    } else {
        args.prompt.join(" ")
    };
    let model = args.model.unwrap_or(settings.model);
    let api_key = args.api_key.or(settings.api_key);
    // Use Ollama Cloud when model has "-cloud" suffix AND API key is set
    let use_cloud = model.ends_with("-cloud") && api_key.is_some();
    let client = if use_cloud {
        OllamaClient::with_cloud().with_api_key(api_key.unwrap())
    } else {
        let base_url = args.ollama_url.unwrap_or(settings.ollama_url);
        let mut client = OllamaClient::new(base_url);
        if let Some(key) = api_key {
            client = client.with_api_key(key);
        }
        client
    };
    let opts = OllamaOptions {
        model,
        stream: true,
    };
    let msgs = vec![ChatMessage {
        role: "user".into(),
        content: prompt.clone(),
    }];
    let start_time = SystemTime::now();
    // Handle different output formats
    match output_format {
        OutputFormat::Text => {
            // Text format: stream to stdout as before
            let mut stream = client.chat_stream(&msgs, &opts).await?;
            while let Some(chunk) = stream.try_next().await? {
                if let Some(m) = chunk.message {
                    if let Some(c) = m.content {
                        print!("{c}");
                        io::stdout().flush()?;
                    }
                }
                if matches!(chunk.done, Some(true)) {
                    break;
                }
            }
            println!(); // Newline after response
        }
        OutputFormat::Json => {
            // JSON format: collect all chunks, then output final JSON
            let mut stream = client.chat_stream(&msgs, &opts).await?;
            let mut response = String::new();
            while let Some(chunk) = stream.try_next().await? {
                if let Some(m) = chunk.message {
                    if let Some(c) = m.content {
                        response.push_str(&c);
                    }
                }
                if matches!(chunk.done, Some(true)) {
                    break;
                }
            }
            let duration_ms = start_time.elapsed().unwrap().as_millis() as u64;
            // Rough token estimate (tokens ~= chars / 4)
            let estimated_tokens = ((prompt.len() + response.len()) / 4) as u64;
            let output = SessionOutput {
                session_id,
                messages: vec![
                    serde_json::json!({"role": "user", "content": prompt}),
                    serde_json::json!({"role": "assistant", "content": response}),
                ],
                stats: Stats {
                    total_tokens: estimated_tokens,
                    prompt_tokens: Some((prompt.len() / 4) as u64),
                    completion_tokens: Some((response.len() / 4) as u64),
                    duration_ms,
                },
                result: None,
                tool: None,
            };
            println!("{}", serde_json::to_string(&output)?);
        }
        OutputFormat::StreamJson => {
            // Stream-JSON format: emit session_start, chunks, and session_end
            let session_start = StreamEvent {
                event_type: "session_start".to_string(),
                session_id: Some(session_id.clone()),
                content: None,
                stats: None,
            };
            println!("{}", serde_json::to_string(&session_start)?);
            let mut stream = client.chat_stream(&msgs, &opts).await?;
            let mut response = String::new();
            while let Some(chunk) = stream.try_next().await? {
                if let Some(m) = chunk.message {
                    if let Some(c) = m.content {
                        response.push_str(&c);
                        let chunk_event = StreamEvent {
                            event_type: "chunk".to_string(),
                            session_id: None,
                            content: Some(c),
                            stats: None,
                        };
                        println!("{}", serde_json::to_string(&chunk_event)?);
                    }
                }
                if matches!(chunk.done, Some(true)) {
                    break;
                }
            }
            let duration_ms = start_time.elapsed().unwrap().as_millis() as u64;
            // Rough token estimate
            let estimated_tokens = ((prompt.len() + response.len()) / 4) as u64;
            let session_end = StreamEvent {
                event_type: "session_end".to_string(),
                session_id: None,
                content: None,
                stats: Some(Stats {
                    total_tokens: estimated_tokens,
                    prompt_tokens: Some((prompt.len() / 4) as u64),
                    completion_tokens: Some((response.len() / 4) as u64),
                    duration_ms,
                }),
            };
            println!("{}", serde_json::to_string(&session_end)?);
        }
    }
    Ok(())
 }
--- a/crates/app/cli/tests/chat_stream.rs
+++ b/crates/app/cli/tests/chat_stream.rs
@@ -0,0 +1,39 @@
 use assert_cmd::Command;
 use httpmock::prelude::*;
 use predicates::prelude::PredicateBooleanExt;
 #[tokio::test]
 async fn headless_streams_ndjson() {
    let server = MockServer::start_async().await;
    // Mock /api/chat with NDJSON lines
    let body = serde_json::json!({
        "model": "qwen2.5",
        "messages": [{"role": "user", "content": "hello"}],
        "stream": true
    });
    let response = concat!(
        r#"{"message":{"role":"assistant","content":"Hel"}}"#,"\n",
        r#"{"message":{"role":"assistant","content":"lo"}}"#,"\n",
        r#"{"done":true}"#,"\n",
    );
    let _m = server.mock(|when, then| {
        when.method(POST)
            .path("/api/chat")
            .json_body(body.clone());
        then.status(200)
            .header("content-type", "application/x-ndjson")
            .body(response);
    });
    let mut cmd = Command::new(assert_cmd::cargo::cargo_bin!("owlen"));
    cmd.arg("--ollama-url").arg(server.base_url())
        .arg("--model").arg("qwen2.5")
        .arg("--print")
        .arg("hello");
    cmd.assert()
        .success()
        .stdout(predicates::str::contains("Hello").count(1).or(predicates::str::contains("Hel").and(predicates::str::contains("lo"))));
 }
--- a/crates/app/cli/tests/headless.rs
+++ b/crates/app/cli/tests/headless.rs
@@ -0,0 +1,145 @@
 use assert_cmd::Command;
 use serde_json::Value;
 use std::fs;
 use tempfile::tempdir;
 #[test]
 fn print_json_has_session_id_and_stats() {
    let mut cmd = Command::cargo_bin("owlen").unwrap();
    cmd.arg("--output-format")
        .arg("json")
        .arg("Say hello");
    let output = cmd.assert().success();
    let stdout = String::from_utf8_lossy(&output.get_output().stdout);
    // Parse JSON output
    let json: Value = serde_json::from_str(&stdout).expect("Output should be valid JSON");
    // Verify session_id exists
    assert!(json.get("session_id").is_some(), "JSON output should have session_id");
    let session_id = json["session_id"].as_str().unwrap();
    assert!(!session_id.is_empty(), "session_id should not be empty");
    // Verify stats exist
    assert!(json.get("stats").is_some(), "JSON output should have stats");
    let stats = &json["stats"];
    // Check for token counts
    assert!(stats.get("total_tokens").is_some(), "stats should have total_tokens");
    // Check for messages
    assert!(json.get("messages").is_some(), "JSON output should have messages");
 }
 #[test]
 fn stream_json_sequence_is_well_formed() {
    let mut cmd = Command::cargo_bin("owlen").unwrap();
    cmd.arg("--output-format")
        .arg("stream-json")
        .arg("Say hello");
    let output = cmd.assert().success();
    let stdout = String::from_utf8_lossy(&output.get_output().stdout);
    // Stream-JSON is NDJSON - each line should be valid JSON
    let lines: Vec<&str> = stdout.lines().filter(|l| !l.is_empty()).collect();
    assert!(!lines.is_empty(), "Stream-JSON should produce at least one event");
    // Each line should be valid JSON
    for (i, line) in lines.iter().enumerate() {
        let json: Value = serde_json::from_str(line)
            .expect(&format!("Line {} should be valid JSON: {}", i, line));
        // Each event should have a type
        assert!(json.get("type").is_some(), "Event should have a type field");
    }
    // First event should be session_start
    let first: Value = serde_json::from_str(lines[0]).unwrap();
    assert_eq!(first["type"].as_str().unwrap(), "session_start");
    assert!(first.get("session_id").is_some());
    // Last event should be session_end or complete
    let last: Value = serde_json::from_str(lines[lines.len() - 1]).unwrap();
    let last_type = last["type"].as_str().unwrap();
    assert!(
        last_type == "session_end" || last_type == "complete",
        "Last event should be session_end or complete, got: {}",
        last_type
    );
 }
 #[test]
 fn text_format_is_default() {
    let mut cmd = Command::cargo_bin("owlen").unwrap();
    cmd.arg("Say hello");
    let output = cmd.assert().success();
    let stdout = String::from_utf8_lossy(&output.get_output().stdout);
    // Text format should not be JSON
    assert!(serde_json::from_str::<Value>(&stdout).is_err(),
           "Default output should be text, not JSON");
 }
 #[test]
 fn json_format_with_tool_execution() {
    let dir = tempdir().unwrap();
    let file = dir.path().join("test.txt");
    fs::write(&file, "hello world").unwrap();
    let mut cmd = Command::cargo_bin("owlen").unwrap();
    cmd.arg("--mode")
        .arg("code")
        .arg("--output-format")
        .arg("json")
        .arg("read")
        .arg(file.to_str().unwrap());
    let output = cmd.assert().success();
    let stdout = String::from_utf8_lossy(&output.get_output().stdout);
    let json: Value = serde_json::from_str(&stdout).expect("Output should be valid JSON");
    // Should have result
    assert!(json.get("result").is_some());
    // Should have tool info
    assert!(json.get("tool").is_some());
    assert_eq!(json["tool"].as_str().unwrap(), "Read");
 }
 #[test]
 fn stream_json_includes_chunk_events() {
    let mut cmd = Command::cargo_bin("owlen").unwrap();
    cmd.arg("--output-format")
        .arg("stream-json")
        .arg("Say hello");
    let output = cmd.assert().success();
    let stdout = String::from_utf8_lossy(&output.get_output().stdout);
    let lines: Vec<&str> = stdout.lines().filter(|l| !l.is_empty()).collect();
    // Should have chunk events between session_start and session_end
    let chunk_events: Vec<&str> = lines.iter()
        .filter(|line| {
            if let Ok(json) = serde_json::from_str::<Value>(line) {
                json["type"].as_str() == Some("chunk")
            } else {
                false
            }
        })
        .copied()
        .collect();
    assert!(!chunk_events.is_empty(), "Should have at least one chunk event");
    // Each chunk should have content
    for chunk_line in chunk_events {
        let chunk: Value = serde_json::from_str(chunk_line).unwrap();
        assert!(chunk.get("content").is_some(), "Chunk should have content");
    }
 }
--- a/crates/app/cli/tests/permissions.rs
+++ b/crates/app/cli/tests/permissions.rs
@@ -0,0 +1,255 @@
 use assert_cmd::Command;
 use std::fs;
 use tempfile::tempdir;
 #[test]
 fn plan_mode_allows_read_operations() {
    // Create a temp file to read
    let dir = tempdir().unwrap();
    let file = dir.path().join("test.txt");
    fs::write(&file, "hello world").unwrap();
    // Read operation should work in plan mode (default)
    let mut cmd = Command::new(assert_cmd::cargo::cargo_bin!("owlen"));
    cmd.arg("read").arg(file.to_str().unwrap());
    cmd.assert().success().stdout("hello world\n");
 }
 #[test]
 fn plan_mode_allows_glob_operations() {
    let dir = tempdir().unwrap();
    fs::write(dir.path().join("a.txt"), "test").unwrap();
    fs::write(dir.path().join("b.txt"), "test").unwrap();
    let pattern = format!("{}/*.txt", dir.path().display());
    // Glob operation should work in plan mode (default)
    let mut cmd = Command::new(assert_cmd::cargo::cargo_bin!("owlen"));
    cmd.arg("glob").arg(&pattern);
    cmd.assert().success();
 }
 #[test]
 fn plan_mode_allows_grep_operations() {
    let dir = tempdir().unwrap();
    fs::write(dir.path().join("test.txt"), "hello world\nfoo bar").unwrap();
    // Grep operation should work in plan mode (default)
    let mut cmd = Command::new(assert_cmd::cargo::cargo_bin!("owlen"));
    cmd.arg("grep").arg(dir.path().to_str().unwrap()).arg("hello");
    cmd.assert().success();
 }
 #[test]
 fn mode_override_via_cli_flag() {
    let dir = tempdir().unwrap();
    let file = dir.path().join("test.txt");
    fs::write(&file, "content").unwrap();
    // Test with --mode code (should also allow read)
    let mut cmd = Command::new(assert_cmd::cargo::cargo_bin!("owlen"));
    cmd.arg("--mode")
        .arg("code")
        .arg("read")
        .arg(file.to_str().unwrap());
    cmd.assert().success().stdout("content\n");
 }
 #[test]
 fn plan_mode_blocks_write_operations() {
    let dir = tempdir().unwrap();
    let file = dir.path().join("new.txt");
    // Write operation should be blocked in plan mode (default)
    let mut cmd = Command::new(assert_cmd::cargo::cargo_bin!("owlen"));
    cmd.arg("write").arg(file.to_str().unwrap()).arg("content");
    cmd.assert().failure();
 }
 #[test]
 fn plan_mode_blocks_edit_operations() {
    let dir = tempdir().unwrap();
    let file = dir.path().join("test.txt");
    fs::write(&file, "old content").unwrap();
    // Edit operation should be blocked in plan mode (default)
    let mut cmd = Command::new(assert_cmd::cargo::cargo_bin!("owlen"));
    cmd.arg("edit")
        .arg(file.to_str().unwrap())
        .arg("old")
        .arg("new");
    cmd.assert().failure();
 }
 #[test]
 fn accept_edits_mode_allows_write() {
    let dir = tempdir().unwrap();
    let file = dir.path().join("new.txt");
    // Write operation should work in acceptEdits mode
    let mut cmd = Command::new(assert_cmd::cargo::cargo_bin!("owlen"));
    cmd.arg("--mode")
        .arg("acceptEdits")
        .arg("write")
        .arg(file.to_str().unwrap())
        .arg("new content");
    cmd.assert().success();
    // Verify file was written
    assert_eq!(fs::read_to_string(&file).unwrap(), "new content");
 }
 #[test]
 fn accept_edits_mode_allows_edit() {
    let dir = tempdir().unwrap();
    let file = dir.path().join("test.txt");
    fs::write(&file, "line 1\nline 2\nline 3").unwrap();
    // Edit operation should work in acceptEdits mode
    let mut cmd = Command::new(assert_cmd::cargo::cargo_bin!("owlen"));
    cmd.arg("--mode")
        .arg("acceptEdits")
        .arg("edit")
        .arg(file.to_str().unwrap())
        .arg("line 2")
        .arg("modified line");
    cmd.assert().success();
    // Verify file was edited
    assert_eq!(
        fs::read_to_string(&file).unwrap(),
        "line 1\nmodified line\nline 3"
    );
 }
 #[test]
 fn code_mode_allows_all_operations() {
    let dir = tempdir().unwrap();
    let file = dir.path().join("test.txt");
    // Write in code mode
    let mut cmd = Command::new(assert_cmd::cargo::cargo_bin!("owlen"));
    cmd.arg("--mode")
        .arg("code")
        .arg("write")
        .arg(file.to_str().unwrap())
        .arg("initial content");
    cmd.assert().success();
    // Edit in code mode
    let mut cmd = Command::new(assert_cmd::cargo::cargo_bin!("owlen"));
    cmd.arg("--mode")
        .arg("code")
        .arg("edit")
        .arg(file.to_str().unwrap())
        .arg("initial")
        .arg("modified");
    cmd.assert().success();
    assert_eq!(fs::read_to_string(&file).unwrap(), "modified content");
 }
 #[test]
 fn plan_mode_blocks_bash_operations() {
    // Bash operation should be blocked in plan mode (default)
    let mut cmd = Command::new(assert_cmd::cargo::cargo_bin!("owlen"));
    cmd.arg("bash").arg("echo hello");
    cmd.assert().failure();
 }
 #[test]
 fn code_mode_allows_bash() {
    // Bash operation should work in code mode
    let mut cmd = Command::new(assert_cmd::cargo::cargo_bin!("owlen"));
    cmd.arg("--mode").arg("code").arg("bash").arg("echo hello");
    cmd.assert().success().stdout("hello\n");
 }
 #[test]
 fn bash_command_timeout_works() {
    // Test that timeout works
    let mut cmd = Command::new(assert_cmd::cargo::cargo_bin!("owlen"));
    cmd.arg("--mode")
        .arg("code")
        .arg("bash")
        .arg("sleep 10")
        .arg("--timeout")
        .arg("1000");
    cmd.assert().failure();
 }
 #[test]
 fn slash_command_works() {
    // Create .owlen/commands directory in temp dir
    let dir = tempdir().unwrap();
    let commands_dir = dir.path().join(".owlen/commands");
    fs::create_dir_all(&commands_dir).unwrap();
    // Create a test slash command
    let command_content = r#"---
 description: "Test command"
 ---
 Hello from slash command!
 Args: $ARGUMENTS
 First: $1
 "#;
    let command_file = commands_dir.join("test.md");
    fs::write(&command_file, command_content).unwrap();
    // Execute slash command with args from the temp directory
    let mut cmd = Command::new(assert_cmd::cargo::cargo_bin!("owlen"));
    cmd.current_dir(dir.path())
        .arg("--mode")
        .arg("code")
        .arg("slash")
        .arg("test")
        .arg("arg1");
    cmd.assert()
        .success()
        .stdout(predicates::str::contains("Hello from slash command!"))
        .stdout(predicates::str::contains("Args: arg1"))
        .stdout(predicates::str::contains("First: arg1"));
 }
 #[test]
 fn slash_command_file_refs() {
    let dir = tempdir().unwrap();
    let commands_dir = dir.path().join(".owlen/commands");
    fs::create_dir_all(&commands_dir).unwrap();
    // Create a file to reference
    let data_file = dir.path().join("data.txt");
    fs::write(&data_file, "Referenced content").unwrap();
    // Create slash command with file reference
    let command_content = format!("File content: @{}", data_file.display());
    fs::write(commands_dir.join("reftest.md"), command_content).unwrap();
    // Execute slash command
    let mut cmd = Command::new(assert_cmd::cargo::cargo_bin!("owlen"));
    cmd.current_dir(dir.path())
        .arg("--mode")
        .arg("code")
        .arg("slash")
        .arg("reftest");
    cmd.assert()
        .success()
        .stdout(predicates::str::contains("Referenced content"));
 }
 #[test]
 fn slash_command_not_found() {
    let dir = tempdir().unwrap();
    // Try to execute non-existent slash command
    let mut cmd = Command::new(assert_cmd::cargo::cargo_bin!("owlen"));
    cmd.current_dir(dir.path())
        .arg("--mode")
        .arg("code")
        .arg("slash")
        .arg("nonexistent");
    cmd.assert().failure();
 }
--- a/crates/integration/mcp-client/Cargo.toml
+++ b/crates/integration/mcp-client/Cargo.toml
@@ -0,0 +1,16 @@
 [package]
 name = "mcp-client"
 version = "0.1.0"
 edition.workspace = true
 license.workspace = true
 rust-version.workspace = true
 [dependencies]
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 tokio = { version = "1.39", features = ["process", "io-util", "sync", "time"] }
 color-eyre = "0.6"
 [dev-dependencies]
 tempfile = "3.23.0"
 tokio = { version = "1.39", features = ["macros", "rt-multi-thread"] }
--- a/crates/integration/mcp-client/src/lib.rs
+++ b/crates/integration/mcp-client/src/lib.rs
@@ -0,0 +1,272 @@
 use color_eyre::eyre::{Result, eyre};
 use serde::{Deserialize, Serialize};
 use serde_json::Value;
 use std::process::Stdio;
 use tokio::io::{AsyncBufReadExt, AsyncWriteExt, BufReader};
 use tokio::process::{Child, Command};
 use tokio::sync::Mutex;
 /// JSON-RPC 2.0 request
 #[derive(Debug, Serialize)]
 struct JsonRpcRequest {
    jsonrpc: String,
    id: u64,
    method: String,
    #[serde(skip_serializing_if = "Option::is_none")]
    params: Option<Value>,
 }
 /// JSON-RPC 2.0 response
 #[derive(Debug, Deserialize)]
 struct JsonRpcResponse {
    jsonrpc: String,
    id: u64,
    #[serde(skip_serializing_if = "Option::is_none")]
    result: Option<Value>,
    #[serde(skip_serializing_if = "Option::is_none")]
    error: Option<JsonRpcError>,
 }
 #[derive(Debug, Deserialize)]
 struct JsonRpcError {
    code: i32,
    message: String,
 }
 /// MCP server capabilities
 #[derive(Debug, Clone, Deserialize, Serialize)]
 pub struct ServerCapabilities {
    #[serde(default)]
    pub tools: Option<ToolsCapability>,
    #[serde(default)]
    pub resources: Option<ResourcesCapability>,
 }
 #[derive(Debug, Clone, Deserialize, Serialize)]
 pub struct ToolsCapability {
    #[serde(default)]
    pub list_changed: Option<bool>,
 }
 #[derive(Debug, Clone, Deserialize, Serialize)]
 pub struct ResourcesCapability {
    #[serde(default)]
    pub subscribe: Option<bool>,
    #[serde(default)]
    pub list_changed: Option<bool>,
 }
 /// MCP Tool definition
 #[derive(Debug, Clone, Deserialize, Serialize)]
 pub struct McpTool {
    pub name: String,
    #[serde(default)]
    pub description: Option<String>,
    #[serde(default)]
    pub input_schema: Option<Value>,
 }
 /// MCP Resource definition
 #[derive(Debug, Clone, Deserialize, Serialize)]
 pub struct McpResource {
    pub uri: String,
    #[serde(default)]
    pub name: Option<String>,
    #[serde(default)]
    pub description: Option<String>,
    #[serde(default)]
    pub mime_type: Option<String>,
 }
 /// MCP Client over stdio transport
 pub struct McpClient {
    process: Mutex<Child>,
    next_id: Mutex<u64>,
    server_name: String,
 }
 impl McpClient {
    /// Create a new MCP client by spawning a subprocess
    pub async fn spawn(command: &str, args: &[&str], server_name: &str) -> Result<Self> {
        let mut child = Command::new(command)
            .args(args)
            .stdin(Stdio::piped())
            .stdout(Stdio::piped())
            .stderr(Stdio::piped())
            .spawn()?;
        // Verify process is running
        if child.try_wait()?.is_some() {
            return Err(eyre!("MCP server process exited immediately"));
        }
        Ok(Self {
            process: Mutex::new(child),
            next_id: Mutex::new(1),
            server_name: server_name.to_string(),
        })
    }
    /// Initialize the MCP connection
    pub async fn initialize(&self) -> Result<ServerCapabilities> {
        let params = serde_json::json!({
            "protocolVersion": "2024-11-05",
            "capabilities": {
                "roots": {
                    "listChanged": true
                }
            },
            "clientInfo": {
                "name": "owlen",
                "version": env!("CARGO_PKG_VERSION")
            }
        });
        let response = self.send_request("initialize", Some(params)).await?;
        let capabilities = response
            .get("capabilities")
            .ok_or_else(|| eyre!("No capabilities in initialize response"))?;
        Ok(serde_json::from_value(capabilities.clone())?)
    }
    /// List available tools
    pub async fn list_tools(&self) -> Result<Vec<McpTool>> {
        let response = self.send_request("tools/list", None).await?;
        let tools = response
            .get("tools")
            .ok_or_else(|| eyre!("No tools in response"))?;
        Ok(serde_json::from_value(tools.clone())?)
    }
    /// Call a tool
    pub async fn call_tool(&self, name: &str, arguments: Value) -> Result<Value> {
        let params = serde_json::json!({
            "name": name,
            "arguments": arguments
        });
        let response = self.send_request("tools/call", Some(params)).await?;
        response
            .get("content")
            .cloned()
            .ok_or_else(|| eyre!("No content in tool call response"))
    }
    /// List available resources
    pub async fn list_resources(&self) -> Result<Vec<McpResource>> {
        let response = self.send_request("resources/list", None).await?;
        let resources = response
            .get("resources")
            .ok_or_else(|| eyre!("No resources in response"))?;
        Ok(serde_json::from_value(resources.clone())?)
    }
    /// Read a resource
    pub async fn read_resource(&self, uri: &str) -> Result<Value> {
        let params = serde_json::json!({
            "uri": uri
        });
        let response = self.send_request("resources/read", Some(params)).await?;
        response
            .get("contents")
            .cloned()
            .ok_or_else(|| eyre!("No contents in resource read response"))
    }
    /// Get the server name
    pub fn server_name(&self) -> &str {
        &self.server_name
    }
    /// Send a JSON-RPC request and get the response
    async fn send_request(&self, method: &str, params: Option<Value>) -> Result<Value> {
        let mut next_id = self.next_id.lock().await;
        let id = *next_id;
        *next_id += 1;
        drop(next_id);
        let request = JsonRpcRequest {
            jsonrpc: "2.0".to_string(),
            id,
            method: method.to_string(),
            params,
        };
        let request_json = serde_json::to_string(&request)?;
        let mut process = self.process.lock().await;
        // Write request
        let stdin = process.stdin.as_mut().ok_or_else(|| eyre!("No stdin"))?;
        stdin.write_all(request_json.as_bytes()).await?;
        stdin.write_all(b"\n").await?;
        stdin.flush().await?;
        // Read response
        let stdout = process.stdout.take().ok_or_else(|| eyre!("No stdout"))?;
        let mut reader = BufReader::new(stdout);
        let mut response_line = String::new();
        reader.read_line(&mut response_line).await?;
        // Put stdout back
        process.stdout = Some(reader.into_inner());
        drop(process);
        let response: JsonRpcResponse = serde_json::from_str(&response_line)?;
        if response.id != id {
            return Err(eyre!("Response ID mismatch: expected {}, got {}", id, response.id));
        }
        if let Some(error) = response.error {
            return Err(eyre!("MCP error {}: {}", error.code, error.message));
        }
        response.result.ok_or_else(|| eyre!("No result in response"))
    }
    /// Close the MCP connection
    pub async fn close(self) -> Result<()> {
        let mut process = self.process.into_inner();
        // Close stdin to signal the server to exit
        drop(process.stdin.take());
        // Wait for process to exit (with timeout)
        tokio::time::timeout(
            std::time::Duration::from_secs(5),
            process.wait()
        ).await??;
        Ok(())
    }
 }
 #[cfg(test)]
 mod tests {
    use super::*;
    #[test]
    fn jsonrpc_request_serializes() {
        let req = JsonRpcRequest {
            jsonrpc: "2.0".to_string(),
            id: 1,
            method: "test".to_string(),
            params: Some(serde_json::json!({"key": "value"})),
        };
        let json = serde_json::to_string(&req).unwrap();
        assert!(json.contains("\"method\":\"test\""));
        assert!(json.contains("\"id\":1"));
    }
 }
--- a/crates/integration/mcp-client/tests/mcp.rs
+++ b/crates/integration/mcp-client/tests/mcp.rs
@@ -0,0 +1,347 @@
 use mcp_client::McpClient;
 use std::fs;
 use tempfile::tempdir;
 #[tokio::test]
 async fn mcp_server_capability_negotiation() {
    // Create a mock MCP server script
    let dir = tempdir().unwrap();
    let server_script = dir.path().join("mock_server.py");
    let script_content = r#"#!/usr/bin/env python3
 import sys
 import json
 def read_request():
    line = sys.stdin.readline()
    return json.loads(line)
 def send_response(response):
    sys.stdout.write(json.dumps(response) + '\n')
    sys.stdout.flush()
 # Main loop
 while True:
    try:
        req = read_request()
        method = req.get('method')
        req_id = req.get('id')
        if method == 'initialize':
            send_response({
                'jsonrpc': '2.0',
                'id': req_id,
                'result': {
                    'protocolVersion': '2024-11-05',
                    'capabilities': {
                        'tools': {'list_changed': True},
                        'resources': {'subscribe': False}
                    },
                    'serverInfo': {
                        'name': 'test-server',
                        'version': '1.0.0'
                    }
                }
            })
        elif method == 'tools/list':
            send_response({
                'jsonrpc': '2.0',
                'id': req_id,
                'result': {
                    'tools': []
                }
            })
        else:
            send_response({
                'jsonrpc': '2.0',
                'id': req_id,
                'error': {
                    'code': -32601,
                    'message': f'Method not found: {method}'
                }
            })
    except EOFError:
        break
    except Exception as e:
        sys.stderr.write(f'Error: {e}\n')
        break
 "#;
    fs::write(&server_script, script_content).unwrap();
    #[cfg(unix)]
    {
        use std::os::unix::fs::PermissionsExt;
        fs::set_permissions(&server_script, std::fs::Permissions::from_mode(0o755)).unwrap();
    }
    // Connect to the server
    let client = McpClient::spawn(
        "python3",
        &[server_script.to_str().unwrap()],
        "test-server"
    ).await.unwrap();
    // Initialize
    let capabilities = client.initialize().await.unwrap();
    // Verify capabilities
    assert!(capabilities.tools.is_some());
    assert_eq!(capabilities.tools.unwrap().list_changed, Some(true));
    client.close().await.unwrap();
 }
 #[tokio::test]
 async fn mcp_tool_invocation() {
    let dir = tempdir().unwrap();
    let server_script = dir.path().join("mock_server.py");
    let script_content = r#"#!/usr/bin/env python3
 import sys
 import json
 def read_request():
    line = sys.stdin.readline()
    return json.loads(line)
 def send_response(response):
    sys.stdout.write(json.dumps(response) + '\n')
    sys.stdout.flush()
 while True:
    try:
        req = read_request()
        method = req.get('method')
        req_id = req.get('id')
        params = req.get('params', {})
        if method == 'initialize':
            send_response({
                'jsonrpc': '2.0',
                'id': req_id,
                'result': {
                    'protocolVersion': '2024-11-05',
                    'capabilities': {
                        'tools': {}
                    },
                    'serverInfo': {
                        'name': 'test-server',
                        'version': '1.0.0'
                    }
                }
            })
        elif method == 'tools/list':
            send_response({
                'jsonrpc': '2.0',
                'id': req_id,
                'result': {
                    'tools': [
                        {
                            'name': 'echo',
                            'description': 'Echo the input',
                            'input_schema': {
                                'type': 'object',
                                'properties': {
                                    'message': {'type': 'string'}
                                }
                            }
                        }
                    ]
                }
            })
        elif method == 'tools/call':
            tool_name = params.get('name')
            arguments = params.get('arguments', {})
            if tool_name == 'echo':
                send_response({
                    'jsonrpc': '2.0',
                    'id': req_id,
                    'result': {
                        'content': [
                            {
                                'type': 'text',
                                'text': arguments.get('message', '')
                            }
                        ]
                    }
                })
            else:
                send_response({
                    'jsonrpc': '2.0',
                    'id': req_id,
                    'error': {
                        'code': -32602,
                        'message': f'Unknown tool: {tool_name}'
                    }
                })
        else:
            send_response({
                'jsonrpc': '2.0',
                'id': req_id,
                'error': {
                    'code': -32601,
                    'message': f'Method not found: {method}'
                }
            })
    except EOFError:
        break
    except Exception as e:
        sys.stderr.write(f'Error: {e}\n')
        break
 "#;
    fs::write(&server_script, script_content).unwrap();
    #[cfg(unix)]
    {
        use std::os::unix::fs::PermissionsExt;
        fs::set_permissions(&server_script, std::fs::Permissions::from_mode(0o755)).unwrap();
    }
    let client = McpClient::spawn(
        "python3",
        &[server_script.to_str().unwrap()],
        "test-server"
    ).await.unwrap();
    client.initialize().await.unwrap();
    // List tools
    let tools = client.list_tools().await.unwrap();
    assert_eq!(tools.len(), 1);
    assert_eq!(tools[0].name, "echo");
    // Call tool
    let result = client.call_tool(
        "echo",
        serde_json::json!({"message": "Hello, MCP!"})
    ).await.unwrap();
    // Verify result
    let content = result.as_array().unwrap();
    assert_eq!(content[0]["text"].as_str().unwrap(), "Hello, MCP!");
    client.close().await.unwrap();
 }
 #[tokio::test]
 async fn mcp_resource_reads() {
    let dir = tempdir().unwrap();
    let server_script = dir.path().join("mock_server.py");
    let script_content = r#"#!/usr/bin/env python3
 import sys
 import json
 def read_request():
    line = sys.stdin.readline()
    return json.loads(line)
 def send_response(response):
    sys.stdout.write(json.dumps(response) + '\n')
    sys.stdout.flush()
 while True:
    try:
        req = read_request()
        method = req.get('method')
        req_id = req.get('id')
        params = req.get('params', {})
        if method == 'initialize':
            send_response({
                'jsonrpc': '2.0',
                'id': req_id,
                'result': {
                    'protocolVersion': '2024-11-05',
                    'capabilities': {
                        'resources': {}
                    },
                    'serverInfo': {
                        'name': 'test-server',
                        'version': '1.0.0'
                    }
                }
            })
        elif method == 'resources/list':
            send_response({
                'jsonrpc': '2.0',
                'id': req_id,
                'result': {
                    'resources': [
                        {
                            'uri': 'file:///test.txt',
                            'name': 'Test File',
                            'description': 'A test file',
                            'mime_type': 'text/plain'
                        }
                    ]
                }
            })
        elif method == 'resources/read':
            uri = params.get('uri')
            if uri == 'file:///test.txt':
                send_response({
                    'jsonrpc': '2.0',
                    'id': req_id,
                    'result': {
                        'contents': [
                            {
                                'uri': uri,
                                'mime_type': 'text/plain',
                                'text': 'Hello from resource!'
                            }
                        ]
                    }
                })
            else:
                send_response({
                    'jsonrpc': '2.0',
                    'id': req_id,
                    'error': {
                        'code': -32602,
                        'message': f'Unknown resource: {uri}'
                    }
                })
        else:
            send_response({
                'jsonrpc': '2.0',
                'id': req_id,
                'error': {
                    'code': -32601,
                    'message': f'Method not found: {method}'
                }
            })
    except EOFError:
        break
    except Exception as e:
        sys.stderr.write(f'Error: {e}\n')
        break
 "#;
    fs::write(&server_script, script_content).unwrap();
    #[cfg(unix)]
    {
        use std::os::unix::fs::PermissionsExt;
        fs::set_permissions(&server_script, std::fs::Permissions::from_mode(0o755)).unwrap();
    }
    let client = McpClient::spawn(
        "python3",
        &[server_script.to_str().unwrap()],
        "test-server"
    ).await.unwrap();
    client.initialize().await.unwrap();
    // List resources
    let resources = client.list_resources().await.unwrap();
    assert_eq!(resources.len(), 1);
    assert_eq!(resources[0].uri, "file:///test.txt");
    // Read resource
    let contents = client.read_resource("file:///test.txt").await.unwrap();
    let contents_array = contents.as_array().unwrap();
    assert_eq!(contents_array[0]["text"].as_str().unwrap(), "Hello from resource!");
    client.close().await.unwrap();
 }
--- a/crates/llm/ollama/.gitignore
+++ b/crates/llm/ollama/.gitignore
@@ -0,0 +1,22 @@
 /target
 ### Rust template
 # Generated by Cargo
 # will have compiled files and executables
 debug/
 target/
 # Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
 # More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
 Cargo.lock
 # These are backup files generated by rustfmt
 **/*.rs.bk
 # MSVC Windows builds of rustc generate these, which store debugging information
 *.pdb
 ### rust-analyzer template
 # Can be generated by other build systems other than cargo (ex: bazelbuild/rust_rules)
 rust-project.json
--- a/crates/llm/ollama/Cargo.toml
+++ b/crates/llm/ollama/Cargo.toml
@@ -0,0 +1,16 @@
 [package]
 name = "llm-ollama"
 version = "0.1.0"
 edition.workspace = true
 license.workspace = true
 rust-version.workspace = true
 [dependencies]
 reqwest = { version = "0.12", features = ["json", "stream"] }
 tokio = { version = "1.39", features = ["rt-multi-thread"] }
 futures = "0.3"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 thiserror = "1"
 bytes = "1"
 tokio-stream = "0.1.17"
--- a/crates/llm/ollama/src/client.rs
+++ b/crates/llm/ollama/src/client.rs
@@ -0,0 +1,98 @@
 use crate::types::{ChatMessage, ChatResponseChunk};
 use futures::{Stream, TryStreamExt};
 use reqwest::Client;
 use serde::Serialize;
 use thiserror::Error;
 #[derive(Debug, Clone)]
 pub struct OllamaClient {
    http: Client,
    base_url: String,  // e.g. "http://localhost:11434"
    api_key: Option<String>,  // For Ollama Cloud authentication
 }
 #[derive(Debug, Clone, Default)]
 pub struct OllamaOptions {
    pub model: String,
    pub stream: bool,
 }
 #[derive(Error, Debug)]
 pub enum OllamaError {
    #[error("http: {0}")]
    Http(#[from] reqwest::Error),
    #[error("json: {0}")]
    Json(#[from] serde_json::Error),
    #[error("protocol: {0}")]
    Protocol(String),
 }
 impl OllamaClient {
    pub fn new(base_url: impl Into<String>) -> Self {
        Self {
            http: Client::new(),
            base_url: base_url.into().trim_end_matches('/').to_string(),
            api_key: None,
        }
    }
    pub fn with_api_key(mut self, api_key: impl Into<String>) -> Self {
        self.api_key = Some(api_key.into());
        self
    }
    pub fn with_cloud() -> Self {
        // Same API, different base
        Self::new("https://ollama.com")
    }
    pub async fn chat_stream(
        &self,
        messages: &[ChatMessage],
        opts: &OllamaOptions,
    ) -> Result<impl Stream<Item = Result<ChatResponseChunk, OllamaError>>, OllamaError> {
        #[derive(Serialize)]
        struct Body<'a> {
            model: &'a str,
            messages: &'a [ChatMessage],
            stream: bool,
        }
        let url = format!("{}/api/chat", self.base_url);
        let body = Body {model: &opts.model, messages, stream: true};
        let mut req = self.http.post(url).json(&body);
        // Add Authorization header if API key is present
        if let Some(ref key) = self.api_key {
            req = req.header("Authorization", format!("Bearer {}", key));
        }
        let resp = req.send().await?;
        let bytes_stream = resp.bytes_stream();
        // NDJSON parser: split by '\n', parse each as JSON and stream the results
        let out = bytes_stream
            .map_err(OllamaError::Http)
            .map_ok(|bytes| {
                // Convert the chunk to a UTF‑8 string and own it
                let txt = String::from_utf8_lossy(&bytes).into_owned();
                // Parse each non‑empty line into a ChatResponseChunk
                let results: Vec<Result<ChatResponseChunk, OllamaError>> = txt
                    .lines()
                    .filter_map(|line| {
                        let trimmed = line.trim();
                        if trimmed.is_empty() {
                            None
                        } else {
                            Some(
                                serde_json::from_str::<ChatResponseChunk>(trimmed)
                                    .map_err(OllamaError::Json),
                            )
                        }
                    })
                    .collect();
                futures::stream::iter(results)
            })
            .try_flatten(); // Stream<Item = Result<ChatResponseChunk, OllamaError>>
        Ok(out)
    }
 }
--- a/crates/llm/ollama/src/lib.rs
+++ b/crates/llm/ollama/src/lib.rs
@@ -0,0 +1,5 @@
 pub mod client;
 pub mod types;
 pub use client::{OllamaClient, OllamaOptions};
 pub use types::{ChatMessage, ChatResponseChunk};
--- a/crates/llm/ollama/src/types.rs
+++ b/crates/llm/ollama/src/types.rs
@@ -0,0 +1,22 @@
 use serde::{Deserialize, Serialize};
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct ChatMessage {
    pub role: String, // "user", | "assistant" | "system"
    pub content: String,
 }
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
 pub struct ChatResponseChunk {
    pub model: Option<String>,
    pub created_at: Option<String>,
    pub message: Option<ChunkMessage>,
    pub done: Option<bool>,
    pub total_duration: Option<u64>,
 }
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
 pub struct ChunkMessage {
    pub role: Option<String>,
    pub content: Option<String>,
 }
--- a/crates/llm/ollama/tests/ndjson.rs
+++ b/crates/llm/ollama/tests/ndjson.rs
@@ -0,0 +1,12 @@
 use llm_ollama::{OllamaClient, OllamaOptions};
 // This test stubs NDJSON by spinning a tiny local server is overkill for M0.
 // Instead, test the line parser indirectly by mocking reqwest is complex.
 // We'll smoke-test the client type compiles and leave end-to-end to cli tests.
 #[tokio::test]
 async fn client_compiles_smoke() {
    let _ = OllamaClient::new("http://localhost:11434");
    let _ = OllamaClient::with_cloud();
    let _ = OllamaOptions { model: "qwen2.5".into(), stream: true };
 }
--- a/crates/owlen-cli/Cargo.toml
+++ b/crates/owlen-cli/Cargo.toml
@@ -1,45 +0,0 @@
 [package]
 name = "owlen-cli"
 version.workspace = true
 edition.workspace = true
 authors.workspace = true
 license.workspace = true
 repository.workspace = true
 homepage.workspace = true
 description = "Command-line interface for OWLEN LLM client"
 [features]
 default = ["chat-client"]
 chat-client = []
 code-client = []
 [[bin]]
 name = "owlen"
 path = "src/main.rs"
 required-features = ["chat-client"]
 [[bin]]
 name = "owlen-code"
 path = "src/code_main.rs"
 required-features = ["code-client"]
 [dependencies]
 owlen-core = { path = "../owlen-core" }
 owlen-tui = { path = "../owlen-tui" }
 owlen-ollama = { path = "../owlen-ollama" }
 # CLI framework
 clap = { version = "4.0", features = ["derive"] }
 # Async runtime
 tokio = { workspace = true }
 tokio-util = { workspace = true }
 # TUI framework
 ratatui = { workspace = true }
 crossterm = { workspace = true }
 # Utilities
 anyhow = { workspace = true }
 serde = { workspace = true }
 serde_json = { workspace = true }
--- a/crates/owlen-cli/src/code_main.rs
+++ b/crates/owlen-cli/src/code_main.rs
@@ -1,103 +0,0 @@
 //! OWLEN Code Mode - TUI client optimized for coding assistance
 use anyhow::Result;
 use clap::{Arg, Command};
 use owlen_core::session::SessionController;
 use owlen_ollama::OllamaProvider;
 use owlen_tui::{config, ui, AppState, CodeApp, Event, EventHandler, SessionEvent};
 use std::io;
 use std::sync::Arc;
 use tokio::sync::mpsc;
 use tokio_util::sync::CancellationToken;
 use crossterm::{
    event::{DisableMouseCapture, EnableMouseCapture},
    execute,
    terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
 };
 use ratatui::{backend::CrosstermBackend, Terminal};
 #[tokio::main]
 async fn main() -> Result<()> {
    let matches = Command::new("owlen-code")
        .about("OWLEN Code Mode - TUI optimized for programming assistance")
        .version(env!("CARGO_PKG_VERSION"))
        .arg(
            Arg::new("model")
                .short('m')
                .long("model")
                .value_name("MODEL")
                .help("Preferred model to use for this session"),
        )
        .get_matches();
    let mut config = config::try_load_config().unwrap_or_default();
    if let Some(model) = matches.get_one::<String>("model") {
        config.general.default_model = Some(model.clone());
    }
    let provider_cfg = config::ensure_ollama_config(&mut config).clone();
    let provider = Arc::new(OllamaProvider::from_config(
        &provider_cfg,
        Some(&config.general),
    )?);
    let controller = SessionController::new(provider, config.clone());
    let (mut app, mut session_rx) = CodeApp::new(controller);
    app.inner_mut().initialize_models().await?;
    let cancellation_token = CancellationToken::new();
    let (event_tx, event_rx) = mpsc::unbounded_channel();
    let event_handler = EventHandler::new(event_tx, cancellation_token.clone());
    let event_handle = tokio::spawn(async move { event_handler.run().await });
    enable_raw_mode()?;
    let mut stdout = io::stdout();
    execute!(stdout, EnterAlternateScreen, EnableMouseCapture)?;
    let backend = CrosstermBackend::new(stdout);
    let mut terminal = Terminal::new(backend)?;
    let result = run_app(&mut terminal, &mut app, event_rx, &mut session_rx).await;
    cancellation_token.cancel();
    event_handle.await?;
    config::save_config(app.inner().config())?;
    disable_raw_mode()?;
    execute!(
        terminal.backend_mut(),
        LeaveAlternateScreen,
        DisableMouseCapture
    )?;
    terminal.show_cursor()?;
    if let Err(err) = result {
        println!("{err:?}");
    }
    Ok(())
 }
 async fn run_app(
    terminal: &mut Terminal<CrosstermBackend<io::Stdout>>,
    app: &mut CodeApp,
    mut event_rx: mpsc::UnboundedReceiver<Event>,
    session_rx: &mut mpsc::UnboundedReceiver<SessionEvent>,
 ) -> Result<()> {
    loop {
        terminal.draw(|f| ui::render_chat(f, app.inner_mut()))?;
        tokio::select! {
            Some(event) = event_rx.recv() => {
                if let AppState::Quit = app.handle_event(event).await? {
                    return Ok(());
                }
            }
            Some(session_event) = session_rx.recv() => {
                app.handle_session_event(session_event)?;
            }
        }
    }
 }
--- a/crates/owlen-cli/src/main.rs
+++ b/crates/owlen-cli/src/main.rs
@@ -1,124 +0,0 @@
 //! OWLEN CLI - Chat TUI client
 use anyhow::Result;
 use clap::{Arg, Command};
 use owlen_core::session::SessionController;
 use owlen_ollama::OllamaProvider;
 use owlen_tui::{config, ui, AppState, ChatApp, Event, EventHandler, SessionEvent};
 use std::io;
 use std::sync::Arc;
 use tokio::sync::mpsc;
 use tokio_util::sync::CancellationToken;
 use crossterm::{
    event::{DisableBracketedPaste, DisableMouseCapture, EnableBracketedPaste, EnableMouseCapture},
    execute,
    terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
 };
 use ratatui::{backend::CrosstermBackend, Terminal};
 #[tokio::main]
 async fn main() -> Result<()> {
    let matches = Command::new("owlen")
        .about("OWLEN - A chat-focused TUI client for Ollama")
        .version(env!("CARGO_PKG_VERSION"))
        .arg(
            Arg::new("model")
                .short('m')
                .long("model")
                .value_name("MODEL")
                .help("Preferred model to use for this session"),
        )
        .get_matches();
    let mut config = config::try_load_config().unwrap_or_default();
    if let Some(model) = matches.get_one::<String>("model") {
        config.general.default_model = Some(model.clone());
    }
    // Prepare provider from configuration
    let provider_cfg = config::ensure_ollama_config(&mut config).clone();
    let provider = Arc::new(OllamaProvider::from_config(
        &provider_cfg,
        Some(&config.general),
    )?);
    let controller = SessionController::new(provider, config.clone());
    let (mut app, mut session_rx) = ChatApp::new(controller);
    app.initialize_models().await?;
    // Event infrastructure
    let cancellation_token = CancellationToken::new();
    let (event_tx, event_rx) = mpsc::unbounded_channel();
    let event_handler = EventHandler::new(event_tx, cancellation_token.clone());
    let event_handle = tokio::spawn(async move { event_handler.run().await });
    // Terminal setup
    enable_raw_mode()?;
    let mut stdout = io::stdout();
    execute!(
        stdout,
        EnterAlternateScreen,
        EnableMouseCapture,
        EnableBracketedPaste
    )?;
    let backend = CrosstermBackend::new(stdout);
    let mut terminal = Terminal::new(backend)?;
    let result = run_app(&mut terminal, &mut app, event_rx, &mut session_rx).await;
    // Shutdown
    cancellation_token.cancel();
    event_handle.await?;
    // Persist configuration updates (e.g., selected model)
    config::save_config(app.config())?;
    disable_raw_mode()?;
    execute!(
        terminal.backend_mut(),
        LeaveAlternateScreen,
        DisableMouseCapture,
        DisableBracketedPaste
    )?;
    terminal.show_cursor()?;
    if let Err(err) = result {
        println!("{err:?}");
    }
    Ok(())
 }
 async fn run_app(
    terminal: &mut Terminal<CrosstermBackend<io::Stdout>>,
    app: &mut ChatApp,
    mut event_rx: mpsc::UnboundedReceiver<Event>,
    session_rx: &mut mpsc::UnboundedReceiver<SessionEvent>,
 ) -> Result<()> {
    loop {
        // Advance loading animation frame
        app.advance_loading_animation();
        terminal.draw(|f| ui::render_chat(f, app))?;
        // Process any pending LLM requests AFTER UI has been drawn
        app.process_pending_llm_request().await?;
        tokio::select! {
            Some(event) = event_rx.recv() => {
                if let AppState::Quit = app.handle_event(event).await? {
                    return Ok(());
                }
            }
            Some(session_event) = session_rx.recv() => {
                app.handle_session_event(session_event)?;
            }
            // Add a timeout to keep the animation going even when there are no events
            _ = tokio::time::sleep(tokio::time::Duration::from_millis(100)) => {
                // This will cause the loop to continue and advance the animation
            }
        }
    }
 }
--- a/crates/owlen-core/Cargo.toml
+++ b/crates/owlen-core/Cargo.toml
@@ -1,28 +0,0 @@
 [package]
 name = "owlen-core"
 version.workspace = true
 edition.workspace = true
 authors.workspace = true
 license.workspace = true
 repository.workspace = true
 homepage.workspace = true
 description = "Core traits and types for OWLEN LLM client"
 [dependencies]
 anyhow = "1.0.75"
 log = "0.4.20"
 serde = { version = "1.0.188", features = ["derive"] }
 serde_json = "1.0.105"
 thiserror = "1.0.48"
 tokio = { version = "1.32.0", features = ["full"] }
 unicode-segmentation = "1.11"
 unicode-width = "0.1"
 uuid = { version = "1.4.1", features = ["v4", "serde"] }
 textwrap = "0.16.0"
 futures = "0.3.28"
 async-trait = "0.1.73"
 toml = "0.8.0"
 shellexpand = "3.1.0"
 [dev-dependencies]
 tokio-test = { workspace = true }
--- a/crates/owlen-core/src/config.rs
+++ b/crates/owlen-core/src/config.rs
@@ -1,342 +0,0 @@
 use crate::provider::ProviderConfig;
 use crate::Result;
 use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
 use std::fs;
 use std::path::{Path, PathBuf};
 use std::time::Duration;
 /// Default location for the OWLEN configuration file
 pub const DEFAULT_CONFIG_PATH: &str = "~/.config/owlen/config.toml";
 /// Core configuration shared by all OWLEN clients
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct Config {
    /// General application settings
    pub general: GeneralSettings,
    /// Provider specific configuration keyed by provider name
    #[serde(default)]
    pub providers: HashMap<String, ProviderConfig>,
    /// UI preferences that frontends can opt into
    #[serde(default)]
    pub ui: UiSettings,
    /// Storage related options
    #[serde(default)]
    pub storage: StorageSettings,
    /// Input handling preferences
    #[serde(default)]
    pub input: InputSettings,
 }
 impl Default for Config {
    fn default() -> Self {
        let mut providers = HashMap::new();
        providers.insert(
            "ollama".to_string(),
            ProviderConfig {
                provider_type: "ollama".to_string(),
                base_url: Some("http://localhost:11434".to_string()),
                api_key: None,
                extra: HashMap::new(),
            },
        );
        Self {
            general: GeneralSettings::default(),
            providers,
            ui: UiSettings::default(),
            storage: StorageSettings::default(),
            input: InputSettings::default(),
        }
    }
 }
 impl Config {
    /// Load configuration from disk, falling back to defaults when missing
    pub fn load(path: Option<&Path>) -> Result<Self> {
        let path = match path {
            Some(path) => path.to_path_buf(),
            None => default_config_path(),
        };
        if path.exists() {
            let content = fs::read_to_string(&path)?;
            let mut config: Config =
                toml::from_str(&content).map_err(|e| crate::Error::Config(e.to_string()))?;
            config.ensure_defaults();
            Ok(config)
        } else {
            Ok(Config::default())
        }
    }
    /// Persist configuration to disk
    pub fn save(&self, path: Option<&Path>) -> Result<()> {
        let path = match path {
            Some(path) => path.to_path_buf(),
            None => default_config_path(),
        };
        if let Some(dir) = path.parent() {
            fs::create_dir_all(dir)?;
        }
        let content =
            toml::to_string_pretty(self).map_err(|e| crate::Error::Config(e.to_string()))?;
        fs::write(path, content)?;
        Ok(())
    }
    /// Get provider configuration by provider name
    pub fn provider(&self, name: &str) -> Option<&ProviderConfig> {
        self.providers.get(name)
    }
    /// Update or insert a provider configuration
    pub fn upsert_provider(&mut self, name: impl Into<String>, config: ProviderConfig) {
        self.providers.insert(name.into(), config);
    }
    /// Resolve default model in order of priority: explicit default, first cached model, provider fallback
    pub fn resolve_default_model<'a>(
        &'a self,
        models: &'a [crate::types::ModelInfo],
    ) -> Option<&'a str> {
        if let Some(model) = self.general.default_model.as_deref() {
            if models.iter().any(|m| m.id == model || m.name == model) {
                return Some(model);
            }
        }
        if let Some(first) = models.first() {
            return Some(&first.id);
        }
        self.general.default_model.as_deref()
    }
    fn ensure_defaults(&mut self) {
        if self.general.default_provider.is_empty() {
            self.general.default_provider = "ollama".to_string();
        }
        if !self.providers.contains_key("ollama") {
            self.providers.insert(
                "ollama".to_string(),
                ProviderConfig {
                    provider_type: "ollama".to_string(),
                    base_url: Some("http://localhost:11434".to_string()),
                    api_key: None,
                    extra: HashMap::new(),
                },
            );
        }
    }
 }
 /// Default configuration path with user home expansion
 pub fn default_config_path() -> PathBuf {
    PathBuf::from(shellexpand::tilde(DEFAULT_CONFIG_PATH).as_ref())
 }
 /// General behaviour settings shared across clients
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct GeneralSettings {
    /// Default provider name for routing
    pub default_provider: String,
    /// Optional default model id
    #[serde(default)]
    pub default_model: Option<String>,
    /// Whether streaming responses are preferred
    #[serde(default = "GeneralSettings::default_streaming")]
    pub enable_streaming: bool,
    /// Optional path to a project context file automatically injected as system prompt
    #[serde(default)]
    pub project_context_file: Option<String>,
    /// TTL for cached model listings in seconds
    #[serde(default = "GeneralSettings::default_model_cache_ttl")]
    pub model_cache_ttl_secs: u64,
 }
 impl GeneralSettings {
    fn default_streaming() -> bool {
        true
    }
    fn default_model_cache_ttl() -> u64 {
        60
    }
    /// Duration representation of model cache TTL
    pub fn model_cache_ttl(&self) -> Duration {
        Duration::from_secs(self.model_cache_ttl_secs.max(5))
    }
 }
 impl Default for GeneralSettings {
    fn default() -> Self {
        Self {
            default_provider: "ollama".to_string(),
            default_model: Some("llama3.2:latest".to_string()),
            enable_streaming: Self::default_streaming(),
            project_context_file: Some("OWLEN.md".to_string()),
            model_cache_ttl_secs: Self::default_model_cache_ttl(),
        }
    }
 }
 /// UI preferences that consumers can respect as needed
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct UiSettings {
    #[serde(default = "UiSettings::default_theme")]
    pub theme: String,
    #[serde(default = "UiSettings::default_word_wrap")]
    pub word_wrap: bool,
    #[serde(default = "UiSettings::default_max_history_lines")]
    pub max_history_lines: usize,
    #[serde(default = "UiSettings::default_show_role_labels")]
    pub show_role_labels: bool,
    #[serde(default = "UiSettings::default_wrap_column")]
    pub wrap_column: u16,
 }
 impl UiSettings {
    fn default_theme() -> String {
        "default".to_string()
    }
    fn default_word_wrap() -> bool {
        true
    }
    fn default_max_history_lines() -> usize {
        2000
    }
    fn default_show_role_labels() -> bool {
        true
    }
    fn default_wrap_column() -> u16 {
        100
    }
 }
 impl Default for UiSettings {
    fn default() -> Self {
        Self {
            theme: Self::default_theme(),
            word_wrap: Self::default_word_wrap(),
            max_history_lines: Self::default_max_history_lines(),
            show_role_labels: Self::default_show_role_labels(),
            wrap_column: Self::default_wrap_column(),
        }
    }
 }
 /// Storage related preferences
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct StorageSettings {
    #[serde(default = "StorageSettings::default_conversation_dir")]
    pub conversation_dir: String,
    #[serde(default = "StorageSettings::default_auto_save")]
    pub auto_save_sessions: bool,
    #[serde(default = "StorageSettings::default_max_sessions")]
    pub max_saved_sessions: usize,
    #[serde(default = "StorageSettings::default_session_timeout")]
    pub session_timeout_minutes: u64,
 }
 impl StorageSettings {
    fn default_conversation_dir() -> String {
        "~/.local/share/owlen/conversations".to_string()
    }
    fn default_auto_save() -> bool {
        true
    }
    fn default_max_sessions() -> usize {
        25
    }
    fn default_session_timeout() -> u64 {
        120
    }
    /// Resolve storage directory path
    pub fn conversation_path(&self) -> PathBuf {
        PathBuf::from(shellexpand::tilde(&self.conversation_dir).as_ref())
    }
 }
 impl Default for StorageSettings {
    fn default() -> Self {
        Self {
            conversation_dir: Self::default_conversation_dir(),
            auto_save_sessions: Self::default_auto_save(),
            max_saved_sessions: Self::default_max_sessions(),
            session_timeout_minutes: Self::default_session_timeout(),
        }
    }
 }
 /// Input handling preferences shared across clients
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct InputSettings {
    #[serde(default = "InputSettings::default_multiline")]
    pub multiline: bool,
    #[serde(default = "InputSettings::default_history_size")]
    pub history_size: usize,
    #[serde(default = "InputSettings::default_tab_width")]
    pub tab_width: u8,
    #[serde(default = "InputSettings::default_confirm_send")]
    pub confirm_send: bool,
 }
 impl InputSettings {
    fn default_multiline() -> bool {
        true
    }
    fn default_history_size() -> usize {
        100
    }
    fn default_tab_width() -> u8 {
        4
    }
    fn default_confirm_send() -> bool {
        false
    }
 }
 impl Default for InputSettings {
    fn default() -> Self {
        Self {
            multiline: Self::default_multiline(),
            history_size: Self::default_history_size(),
            tab_width: Self::default_tab_width(),
            confirm_send: Self::default_confirm_send(),
        }
    }
 }
 /// Convenience accessor for an Ollama provider entry, creating a default if missing
 pub fn ensure_ollama_config(config: &mut Config) -> &ProviderConfig {
    config
        .providers
        .entry("ollama".to_string())
        .or_insert_with(|| ProviderConfig {
            provider_type: "ollama".to_string(),
            base_url: Some("http://localhost:11434".to_string()),
            api_key: None,
            extra: HashMap::new(),
        })
 }
 /// Calculate absolute timeout for session data based on configuration
 pub fn session_timeout(config: &Config) -> Duration {
    Duration::from_secs(config.storage.session_timeout_minutes.max(1) * 60)
 }
--- a/crates/owlen-core/src/conversation.rs
+++ b/crates/owlen-core/src/conversation.rs
@@ -1,289 +0,0 @@
 use crate::types::{Conversation, Message};
 use crate::Result;
 use serde_json::{Number, Value};
 use std::collections::{HashMap, VecDeque};
 use std::time::{Duration, Instant};
 use uuid::Uuid;
 const STREAMING_FLAG: &str = "streaming";
 const LAST_CHUNK_TS: &str = "last_chunk_ts";
 const PLACEHOLDER_FLAG: &str = "placeholder";
 /// Manage active and historical conversations, including streaming updates.
 pub struct ConversationManager {
    active: Conversation,
    history: VecDeque<Conversation>,
    message_index: HashMap<Uuid, usize>,
    streaming: HashMap<Uuid, StreamingMetadata>,
    max_history: usize,
 }
 #[derive(Debug, Clone)]
 pub struct StreamingMetadata {
    started: Instant,
    last_update: Instant,
 }
 impl ConversationManager {
    /// Create a new conversation manager with a default model
    pub fn new(model: impl Into<String>) -> Self {
        Self::with_history_capacity(model, 32)
    }
    /// Create with explicit history capacity
    pub fn with_history_capacity(model: impl Into<String>, max_history: usize) -> Self {
        let conversation = Conversation::new(model.into());
        Self {
            active: conversation,
            history: VecDeque::new(),
            message_index: HashMap::new(),
            streaming: HashMap::new(),
            max_history: max_history.max(1),
        }
    }
    /// Access the active conversation
    pub fn active(&self) -> &Conversation {
        &self.active
    }
    /// Mutable access to the active conversation (auto refreshing indexes afterwards)
    fn active_mut(&mut self) -> &mut Conversation {
        &mut self.active
    }
    /// Replace the active conversation with a provided one, archiving the existing conversation if it contains data
    pub fn load(&mut self, conversation: Conversation) {
        if !self.active.messages.is_empty() {
            self.archive_active();
        }
        self.message_index.clear();
        for (idx, message) in conversation.messages.iter().enumerate() {
            self.message_index.insert(message.id, idx);
        }
        self.stream_reset();
        self.active = conversation;
    }
    /// Start a brand new conversation, archiving the previous one
    pub fn start_new(&mut self, model: Option<String>, name: Option<String>) {
        self.archive_active();
        let model = model.unwrap_or_else(|| self.active.model.clone());
        self.active = Conversation::new(model);
        self.active.name = name;
        self.message_index.clear();
        self.stream_reset();
    }
    /// Archive the active conversation into history
    pub fn archive_active(&mut self) {
        if self.active.messages.is_empty() {
            return;
        }
        let mut archived = self.active.clone();
        archived.updated_at = std::time::SystemTime::now();
        self.history.push_front(archived);
        while self.history.len() > self.max_history {
            self.history.pop_back();
        }
    }
    /// Get immutable history
    pub fn history(&self) -> impl Iterator<Item = &Conversation> {
        self.history.iter()
    }
    /// Add a user message and return its identifier
    pub fn push_user_message(&mut self, content: impl Into<String>) -> Uuid {
        let message = Message::user(content.into());
        self.register_message(message)
    }
    /// Add a system message and return its identifier
    pub fn push_system_message(&mut self, content: impl Into<String>) -> Uuid {
        let message = Message::system(content.into());
        self.register_message(message)
    }
    /// Add an assistant message (non-streaming) and return its identifier
    pub fn push_assistant_message(&mut self, content: impl Into<String>) -> Uuid {
        let message = Message::assistant(content.into());
        self.register_message(message)
    }
    /// Push an arbitrary message into the active conversation
    pub fn push_message(&mut self, message: Message) -> Uuid {
        self.register_message(message)
    }
    /// Start tracking a streaming assistant response, returning the message id to update
    pub fn start_streaming_response(&mut self) -> Uuid {
        let mut message = Message::assistant(String::new());
        message
            .metadata
            .insert(STREAMING_FLAG.to_string(), Value::Bool(true));
        let id = message.id;
        self.register_message(message);
        self.streaming.insert(
            id,
            StreamingMetadata {
                started: Instant::now(),
                last_update: Instant::now(),
            },
        );
        id
    }
    /// Append streaming content to an assistant message
    pub fn append_stream_chunk(
        &mut self,
        message_id: Uuid,
        chunk: &str,
        is_final: bool,
    ) -> Result<()> {
        let index = self
            .message_index
            .get(&message_id)
            .copied()
            .ok_or_else(|| crate::Error::Unknown(format!("Unknown message id: {message_id}")))?;
        let conversation = self.active_mut();
        if let Some(message) = conversation.messages.get_mut(index) {
            let was_placeholder = message
                .metadata
                .remove(PLACEHOLDER_FLAG)
                .and_then(|v| v.as_bool())
                .unwrap_or(false);
            if was_placeholder {
                message.content.clear();
            }
            if !chunk.is_empty() {
                message.content.push_str(chunk);
            }
            message.timestamp = std::time::SystemTime::now();
            let millis = std::time::SystemTime::now()
                .duration_since(std::time::UNIX_EPOCH)
                .unwrap_or_default()
                .as_millis() as u64;
            message.metadata.insert(
                LAST_CHUNK_TS.to_string(),
                Value::Number(Number::from(millis)),
            );
            if is_final {
                message
                    .metadata
                    .insert(STREAMING_FLAG.to_string(), Value::Bool(false));
                self.streaming.remove(&message_id);
            } else if let Some(info) = self.streaming.get_mut(&message_id) {
                info.last_update = Instant::now();
            }
        }
        Ok(())
    }
    /// Set placeholder text for a streaming message
    pub fn set_stream_placeholder(
        &mut self,
        message_id: Uuid,
        text: impl Into<String>,
    ) -> Result<()> {
        let index = self
            .message_index
            .get(&message_id)
            .copied()
            .ok_or_else(|| crate::Error::Unknown(format!("Unknown message id: {message_id}")))?;
        if let Some(message) = self.active_mut().messages.get_mut(index) {
            message.content = text.into();
            message.timestamp = std::time::SystemTime::now();
            message
                .metadata
                .insert(PLACEHOLDER_FLAG.to_string(), Value::Bool(true));
        }
        Ok(())
    }
    /// Update the active model (used when user changes model mid session)
    pub fn set_model(&mut self, model: impl Into<String>) {
        self.active.model = model.into();
        self.active.updated_at = std::time::SystemTime::now();
    }
    /// Provide read access to the cached streaming metadata
    pub fn streaming_metadata(&self, message_id: &Uuid) -> Option<StreamingMetadata> {
        self.streaming.get(message_id).cloned()
    }
    /// Remove inactive streaming messages that have stalled beyond the provided timeout
    pub fn expire_stalled_streams(&mut self, idle_timeout: Duration) -> Vec<Uuid> {
        let cutoff = Instant::now() - idle_timeout;
        let mut expired = Vec::new();
        self.streaming.retain(|id, meta| {
            if meta.last_update < cutoff {
                expired.push(*id);
                false
            } else {
                true
            }
        });
        expired
    }
    /// Clear all state
    pub fn clear(&mut self) {
        self.active.clear();
        self.history.clear();
        self.message_index.clear();
        self.streaming.clear();
    }
    fn register_message(&mut self, message: Message) -> Uuid {
        let id = message.id;
        let idx;
        {
            let conversation = self.active_mut();
            idx = conversation.messages.len();
            conversation.messages.push(message);
            conversation.updated_at = std::time::SystemTime::now();
        }
        self.message_index.insert(id, idx);
        id
    }
    fn stream_reset(&mut self) {
        self.streaming.clear();
    }
 }
 impl StreamingMetadata {
    /// Duration since the stream started
    pub fn elapsed(&self) -> Duration {
        self.started.elapsed()
    }
    /// Duration since the last chunk was received
    pub fn idle_duration(&self) -> Duration {
        self.last_update.elapsed()
    }
    /// Timestamp when streaming started
    pub fn started_at(&self) -> Instant {
        self.started
    }
    /// Timestamp of most recent update
    pub fn last_update_at(&self) -> Instant {
        self.last_update
    }
 }
--- a/crates/owlen-core/src/formatting.rs
+++ b/crates/owlen-core/src/formatting.rs
@@ -1,96 +0,0 @@
 use crate::types::Message;
 /// Formats messages for display across different clients.
 #[derive(Debug, Clone)]
 pub struct MessageFormatter {
    wrap_width: usize,
    show_role_labels: bool,
    preserve_empty_lines: bool,
 }
 impl MessageFormatter {
    /// Create a new formatter
    pub fn new(wrap_width: usize, show_role_labels: bool) -> Self {
        Self {
            wrap_width: wrap_width.max(20),
            show_role_labels,
            preserve_empty_lines: false,
        }
    }
    /// Override whether empty lines should be preserved
    pub fn with_preserve_empty(mut self, preserve: bool) -> Self {
        self.preserve_empty_lines = preserve;
        self
    }
    /// Update the wrap width
    pub fn set_wrap_width(&mut self, width: usize) {
        self.wrap_width = width.max(20);
    }
    /// Whether role labels should be shown alongside messages
    pub fn show_role_labels(&self) -> bool {
        self.show_role_labels
    }
    pub fn format_message(&self, message: &Message) -> Vec<String> {
        message
            .content
            .trim()
            .lines()
            .map(|s| s.to_string())
            .collect()
    }
    /// Extract thinking content from <think> tags, returning (content_without_think, thinking_content)
    /// This handles both complete and incomplete (streaming) think tags.
    pub fn extract_thinking(&self, content: &str) -> (String, Option<String>) {
        let mut result = String::new();
        let mut thinking = String::new();
        let mut current_pos = 0;
        while let Some(start_pos) = content[current_pos..].find("<think>") {
            let abs_start = current_pos + start_pos;
            // Add content before <think> tag to result
            result.push_str(&content[current_pos..abs_start]);
            // Find closing tag
            if let Some(end_pos) = content[abs_start..].find("</think>") {
                let abs_end = abs_start + end_pos;
                let think_content = &content[abs_start + 7..abs_end]; // 7 = len("<think>")
                if !thinking.is_empty() {
                    thinking.push_str("\n\n");
                }
                thinking.push_str(think_content.trim());
                current_pos = abs_end + 8; // 8 = len("</think>")
            } else {
                // Unclosed tag - this is streaming content
                // Extract everything after <think> as thinking content
                let think_content = &content[abs_start + 7..]; // 7 = len("<think>")
                if !thinking.is_empty() {
                    thinking.push_str("\n\n");
                }
                thinking.push_str(think_content);
                current_pos = content.len();
                break;
            }
        }
        // Add remaining content
        result.push_str(&content[current_pos..]);
        let thinking_result = if thinking.is_empty() {
            None
        } else {
            Some(thinking)
        };
        (result, thinking_result)
    }
 }
--- a/crates/owlen-core/src/input.rs
+++ b/crates/owlen-core/src/input.rs
@@ -1,217 +0,0 @@
 use std::collections::VecDeque;
 /// Text input buffer with history and cursor management.
 #[derive(Debug, Clone)]
 pub struct InputBuffer {
    buffer: String,
    cursor: usize,
    history: VecDeque<String>,
    history_index: Option<usize>,
    max_history: usize,
    pub multiline: bool,
    tab_width: u8,
 }
 impl InputBuffer {
    /// Create a new input buffer
    pub fn new(max_history: usize, multiline: bool, tab_width: u8) -> Self {
        Self {
            buffer: String::new(),
            cursor: 0,
            history: VecDeque::with_capacity(max_history.max(1)),
            history_index: None,
            max_history: max_history.max(1),
            multiline,
            tab_width: tab_width.max(1),
        }
    }
    /// Get current text
    pub fn text(&self) -> &str {
        &self.buffer
    }
    /// Current cursor position
    pub fn cursor(&self) -> usize {
        self.cursor
    }
    /// Replace buffer contents
    pub fn set_text(&mut self, text: impl Into<String>) {
        self.buffer = text.into();
        self.cursor = self.buffer.len();
        self.history_index = None;
    }
    /// Clear buffer and reset cursor
    pub fn clear(&mut self) {
        self.buffer.clear();
        self.cursor = 0;
        self.history_index = None;
    }
    /// Insert a character at the cursor position
    pub fn insert_char(&mut self, ch: char) {
        if ch == '\t' {
            self.insert_tab();
            return;
        }
        self.buffer.insert(self.cursor, ch);
        self.cursor += ch.len_utf8();
    }
    /// Insert text at cursor
    pub fn insert_text(&mut self, text: &str) {
        self.buffer.insert_str(self.cursor, text);
        self.cursor += text.len();
    }
    /// Insert spaces representing a tab
    pub fn insert_tab(&mut self) {
        let spaces = " ".repeat(self.tab_width as usize);
        self.insert_text(&spaces);
    }
    /// Remove character before cursor
    pub fn backspace(&mut self) {
        if self.cursor == 0 {
            return;
        }
        let prev_index = prev_char_boundary(&self.buffer, self.cursor);
        self.buffer.drain(prev_index..self.cursor);
        self.cursor = prev_index;
    }
    /// Remove character at cursor
    pub fn delete(&mut self) {
        if self.cursor >= self.buffer.len() {
            return;
        }
        let next_index = next_char_boundary(&self.buffer, self.cursor);
        self.buffer.drain(self.cursor..next_index);
    }
    /// Move cursor left by one grapheme
    pub fn move_left(&mut self) {
        if self.cursor == 0 {
            return;
        }
        self.cursor = prev_char_boundary(&self.buffer, self.cursor);
    }
    /// Move cursor right by one grapheme
    pub fn move_right(&mut self) {
        if self.cursor >= self.buffer.len() {
            return;
        }
        self.cursor = next_char_boundary(&self.buffer, self.cursor);
    }
    /// Move cursor to start of the buffer
    pub fn move_home(&mut self) {
        self.cursor = 0;
    }
    /// Move cursor to end of the buffer
    pub fn move_end(&mut self) {
        self.cursor = self.buffer.len();
    }
    /// Push current buffer into history, clearing the buffer afterwards
    pub fn commit_to_history(&mut self) -> String {
        let text = std::mem::take(&mut self.buffer);
        if !text.trim().is_empty() {
            self.push_history_entry(text.clone());
        }
        self.cursor = 0;
        self.history_index = None;
        text
    }
    /// Navigate to previous history entry
    pub fn history_previous(&mut self) {
        if self.history.is_empty() {
            return;
        }
        let new_index = match self.history_index {
            Some(idx) if idx + 1 < self.history.len() => idx + 1,
            None => 0,
            _ => return,
        };
        self.history_index = Some(new_index);
        if let Some(entry) = self.history.get(new_index) {
            self.buffer = entry.clone();
            self.cursor = self.buffer.len();
        }
    }
    /// Navigate to next history entry
    pub fn history_next(&mut self) {
        if self.history.is_empty() {
            return;
        }
        if let Some(idx) = self.history_index {
            if idx > 0 {
                let new_idx = idx - 1;
                self.history_index = Some(new_idx);
                if let Some(entry) = self.history.get(new_idx) {
                    self.buffer = entry.clone();
                    self.cursor = self.buffer.len();
                }
            } else {
                self.history_index = None;
                self.buffer.clear();
                self.cursor = 0;
            }
        } else {
            self.buffer.clear();
            self.cursor = 0;
        }
    }
    /// Push a new entry into the history buffer, enforcing capacity
    pub fn push_history_entry(&mut self, entry: String) {
        if self
            .history
            .front()
            .map(|existing| existing == &entry)
            .unwrap_or(false)
        {
            return;
        }
        self.history.push_front(entry);
        while self.history.len() > self.max_history {
            self.history.pop_back();
        }
    }
 }
 fn prev_char_boundary(buffer: &str, cursor: usize) -> usize {
    buffer[..cursor]
        .char_indices()
        .last()
        .map(|(idx, _)| idx)
        .unwrap_or(0)
 }
 fn next_char_boundary(buffer: &str, cursor: usize) -> usize {
    if cursor >= buffer.len() {
        return buffer.len();
    }
    let slice = &buffer[cursor..];
    let mut iter = slice.char_indices();
    iter.next();
    if let Some((idx, _)) = iter.next() {
        cursor + idx
    } else {
        buffer.len()
    }
 }
--- a/crates/owlen-core/src/lib.rs
+++ b/crates/owlen-core/src/lib.rs
@@ -1,59 +0,0 @@
 //! Core traits and types for OWLEN LLM client
 //!
 //! This crate provides the foundational abstractions for building
 //! LLM providers, routers, and MCP (Model Context Protocol) adapters.
 pub mod config;
 pub mod conversation;
 pub mod formatting;
 pub mod input;
 pub mod model;
 pub mod provider;
 pub mod router;
 pub mod session;
 pub mod types;
 pub mod ui;
 pub mod wrap_cursor;
 pub use config::*;
 pub use conversation::*;
 pub use formatting::*;
 pub use input::*;
 pub use model::*;
 pub use provider::*;
 pub use router::*;
 pub use session::*;
 /// Result type used throughout the OWLEN ecosystem
 pub type Result<T> = std::result::Result<T, Error>;
 /// Core error types for OWLEN
 #[derive(thiserror::Error, Debug)]
 pub enum Error {
    #[error("Provider error: {0}")]
    Provider(#[from] anyhow::Error),
    #[error("Network error: {0}")]
    Network(String),
    #[error("Authentication error: {0}")]
    Auth(String),
    #[error("Configuration error: {0}")]
    Config(String),
    #[error("I/O error: {0}")]
    Io(#[from] std::io::Error),
    #[error("Invalid input: {0}")]
    InvalidInput(String),
    #[error("Operation timed out: {0}")]
    Timeout(String),
    #[error("Serialization error: {0}")]
    Serialization(#[from] serde_json::Error),
    #[error("Unknown error: {0}")]
    Unknown(String),
 }
--- a/crates/owlen-core/src/model.rs
+++ b/crates/owlen-core/src/model.rs
@@ -1,84 +0,0 @@
 use crate::types::ModelInfo;
 use crate::Result;
 use std::future::Future;
 use std::sync::Arc;
 use std::time::{Duration, Instant};
 use tokio::sync::RwLock;
 #[derive(Default, Debug)]
 struct ModelCache {
    models: Vec<ModelInfo>,
    last_refresh: Option<Instant>,
 }
 /// Caches model listings for improved selection performance
 #[derive(Clone, Debug)]
 pub struct ModelManager {
    cache: Arc<RwLock<ModelCache>>,
    ttl: Duration,
 }
 impl ModelManager {
    /// Create a new manager with the desired cache TTL
    pub fn new(ttl: Duration) -> Self {
        Self {
            cache: Arc::new(RwLock::new(ModelCache::default())),
            ttl,
        }
    }
    /// Get cached models, refreshing via the provided fetcher when stale. Returns the up-to-date model list.
    pub async fn get_or_refresh<F, Fut>(
        &self,
        force_refresh: bool,
        fetcher: F,
    ) -> Result<Vec<ModelInfo>>
    where
        F: FnOnce() -> Fut,
        Fut: Future<Output = Result<Vec<ModelInfo>>>,
    {
        if !force_refresh {
            if let Some(models) = self.cached_if_fresh().await {
                return Ok(models);
            }
        }
        let models = fetcher().await?;
        let mut cache = self.cache.write().await;
        cache.models = models.clone();
        cache.last_refresh = Some(Instant::now());
        Ok(models)
    }
    /// Return cached models without refreshing
    pub async fn cached(&self) -> Vec<ModelInfo> {
        self.cache.read().await.models.clone()
    }
    /// Drop cached models, forcing next call to refresh
    pub async fn invalidate(&self) {
        let mut cache = self.cache.write().await;
        cache.models.clear();
        cache.last_refresh = None;
    }
    /// Select a model by id or name from the cache
    pub async fn select(&self, identifier: &str) -> Option<ModelInfo> {
        let cache = self.cache.read().await;
        cache
            .models
            .iter()
            .find(|m| m.id == identifier || m.name == identifier)
            .cloned()
    }
    async fn cached_if_fresh(&self) -> Option<Vec<ModelInfo>> {
        let cache = self.cache.read().await;
        let fresh = matches!(cache.last_refresh, Some(ts) if ts.elapsed() < self.ttl);
        if fresh && !cache.models.is_empty() {
            Some(cache.models.clone())
        } else {
            None
        }
    }
 }
--- a/crates/owlen-core/src/provider.rs
+++ b/crates/owlen-core/src/provider.rs
@@ -1,105 +0,0 @@
 //! Provider trait and related types
 use crate::{types::*, Result};
 use futures::Stream;
 use std::pin::Pin;
 use std::sync::Arc;
 /// A stream of chat responses
 pub type ChatStream = Pin<Box<dyn Stream<Item = Result<ChatResponse>> + Send>>;
 /// Trait for LLM providers (Ollama, OpenAI, Anthropic, etc.)
 #[async_trait::async_trait]
 pub trait Provider: Send + Sync {
    /// Get the name of this provider
    fn name(&self) -> &str;
    /// List available models from this provider
    async fn list_models(&self) -> Result<Vec<ModelInfo>>;
    /// Send a chat completion request
    async fn chat(&self, request: ChatRequest) -> Result<ChatResponse>;
    /// Send a streaming chat completion request
    async fn chat_stream(&self, request: ChatRequest) -> Result<ChatStream>;
    /// Check if the provider is available/healthy
    async fn health_check(&self) -> Result<()>;
    /// Get provider-specific configuration schema
    fn config_schema(&self) -> serde_json::Value {
        serde_json::json!({})
    }
 }
 /// Configuration for a provider
 #[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
 pub struct ProviderConfig {
    /// Provider type identifier
    pub provider_type: String,
    /// Base URL for API calls
    pub base_url: Option<String>,
    /// API key or token
    pub api_key: Option<String>,
    /// Additional provider-specific configuration
    #[serde(flatten)]
    pub extra: std::collections::HashMap<String, serde_json::Value>,
 }
 /// A registry of providers
 pub struct ProviderRegistry {
    providers: std::collections::HashMap<String, Arc<dyn Provider>>,
 }
 impl ProviderRegistry {
    /// Create a new provider registry
    pub fn new() -> Self {
        Self {
            providers: std::collections::HashMap::new(),
        }
    }
    /// Register a provider
    pub fn register<P: Provider + 'static>(&mut self, provider: P) {
        self.register_arc(Arc::new(provider));
    }
    /// Register an already wrapped provider
    pub fn register_arc(&mut self, provider: Arc<dyn Provider>) {
        let name = provider.name().to_string();
        self.providers.insert(name, provider);
    }
    /// Get a provider by name
    pub fn get(&self, name: &str) -> Option<Arc<dyn Provider>> {
        self.providers.get(name).cloned()
    }
    /// List all registered provider names
    pub fn list_providers(&self) -> Vec<String> {
        self.providers.keys().cloned().collect()
    }
    /// Get all models from all providers
    pub async fn list_all_models(&self) -> Result<Vec<ModelInfo>> {
        let mut all_models = Vec::new();
        for provider in self.providers.values() {
            match provider.list_models().await {
                Ok(mut models) => all_models.append(&mut models),
                Err(e) => {
                    // Log error but continue with other providers
                    eprintln!("Failed to get models from {}: {}", provider.name(), e);
                }
            }
        }
        Ok(all_models)
    }
 }
 impl Default for ProviderRegistry {
    fn default() -> Self {
        Self::new()
    }
 }
--- a/crates/owlen-core/src/router.rs
+++ b/crates/owlen-core/src/router.rs
@@ -1,153 +0,0 @@
 //! Router for managing multiple providers and routing requests
 use crate::{provider::*, types::*, Result};
 use std::sync::Arc;
 /// A router that can distribute requests across multiple providers
 pub struct Router {
    registry: ProviderRegistry,
    routing_rules: Vec<RoutingRule>,
    default_provider: Option<String>,
 }
 /// A rule for routing requests to specific providers
 #[derive(Debug, Clone)]
 pub struct RoutingRule {
    /// Pattern to match against model names
    pub model_pattern: String,
    /// Provider to route to
    pub provider: String,
    /// Priority (higher numbers are checked first)
    pub priority: u32,
 }
 impl Router {
    /// Create a new router
    pub fn new() -> Self {
        Self {
            registry: ProviderRegistry::new(),
            routing_rules: Vec::new(),
            default_provider: None,
        }
    }
    /// Register a provider with the router
    pub fn register_provider<P: Provider + 'static>(&mut self, provider: P) {
        self.registry.register(provider);
    }
    /// Set the default provider
    pub fn set_default_provider(&mut self, provider_name: String) {
        self.default_provider = Some(provider_name);
    }
    /// Add a routing rule
    pub fn add_routing_rule(&mut self, rule: RoutingRule) {
        self.routing_rules.push(rule);
        // Sort by priority (descending)
        self.routing_rules
            .sort_by(|a, b| b.priority.cmp(&a.priority));
    }
    /// Route a request to the appropriate provider
    pub async fn chat(&self, request: ChatRequest) -> Result<ChatResponse> {
        let provider = self.find_provider_for_model(&request.model)?;
        provider.chat(request).await
    }
    /// Route a streaming request to the appropriate provider
    pub async fn chat_stream(&self, request: ChatRequest) -> Result<ChatStream> {
        let provider = self.find_provider_for_model(&request.model)?;
        provider.chat_stream(request).await
    }
    /// List all available models from all providers
    pub async fn list_models(&self) -> Result<Vec<ModelInfo>> {
        self.registry.list_all_models().await
    }
    /// Find the appropriate provider for a given model
    fn find_provider_for_model(&self, model: &str) -> Result<Arc<dyn Provider>> {
        // Check routing rules first
        for rule in &self.routing_rules {
            if self.matches_pattern(&rule.model_pattern, model) {
                if let Some(provider) = self.registry.get(&rule.provider) {
                    return Ok(provider);
                }
            }
        }
        // Fall back to default provider
        if let Some(default) = &self.default_provider {
            if let Some(provider) = self.registry.get(default) {
                return Ok(provider);
            }
        }
        // If no default, try to find any provider that has this model
        // This is a fallback for cases where routing isn't configured
        for provider_name in self.registry.list_providers() {
            if let Some(provider) = self.registry.get(&provider_name) {
                return Ok(provider);
            }
        }
        Err(crate::Error::Provider(anyhow::anyhow!(
            "No provider found for model: {}",
            model
        )))
    }
    /// Check if a model name matches a pattern
    fn matches_pattern(&self, pattern: &str, model: &str) -> bool {
        // Simple pattern matching for now
        // Could be extended to support more complex patterns
        if pattern == "*" {
            return true;
        }
        if let Some(prefix) = pattern.strip_suffix('*') {
            return model.starts_with(prefix);
        }
        if let Some(suffix) = pattern.strip_prefix('*') {
            return model.ends_with(suffix);
        }
        pattern == model
    }
    /// Get routing configuration
    pub fn get_routing_rules(&self) -> &[RoutingRule] {
        &self.routing_rules
    }
    /// Get the default provider name
    pub fn get_default_provider(&self) -> Option<&str> {
        self.default_provider.as_deref()
    }
 }
 impl Default for Router {
    fn default() -> Self {
        Self::new()
    }
 }
 #[cfg(test)]
 mod tests {
    use super::*;
    #[test]
    fn test_pattern_matching() {
        let router = Router::new();
        assert!(router.matches_pattern("*", "any-model"));
        assert!(router.matches_pattern("gpt*", "gpt-4"));
        assert!(router.matches_pattern("gpt*", "gpt-3.5-turbo"));
        assert!(!router.matches_pattern("gpt*", "claude-3"));
        assert!(router.matches_pattern("*:latest", "llama2:latest"));
        assert!(router.matches_pattern("exact-match", "exact-match"));
        assert!(!router.matches_pattern("exact-match", "different-model"));
    }
 }
--- a/crates/owlen-core/src/session.rs
+++ b/crates/owlen-core/src/session.rs
@@ -1,221 +0,0 @@
 use crate::config::Config;
 use crate::conversation::ConversationManager;
 use crate::formatting::MessageFormatter;
 use crate::input::InputBuffer;
 use crate::model::ModelManager;
 use crate::provider::{ChatStream, Provider};
 use crate::types::{ChatParameters, ChatRequest, ChatResponse, Conversation, ModelInfo};
 use crate::Result;
 use std::sync::Arc;
 use uuid::Uuid;
 /// Outcome of submitting a chat request
 pub enum SessionOutcome {
    /// Immediate response received (non-streaming)
    Complete(ChatResponse),
    /// Streaming response where chunks will arrive asynchronously
    Streaming {
        response_id: Uuid,
        stream: ChatStream,
    },
 }
 /// High-level controller encapsulating session state and provider interactions
 pub struct SessionController {
    provider: Arc<dyn Provider>,
    conversation: ConversationManager,
    model_manager: ModelManager,
    input_buffer: InputBuffer,
    formatter: MessageFormatter,
    config: Config,
 }
 impl SessionController {
    /// Create a new controller with the given provider and configuration
    pub fn new(provider: Arc<dyn Provider>, config: Config) -> Self {
        let model = config
            .general
            .default_model
            .clone()
            .unwrap_or_else(|| "ollama/default".to_string());
        let conversation =
            ConversationManager::with_history_capacity(model, config.storage.max_saved_sessions);
        let formatter =
            MessageFormatter::new(config.ui.wrap_column as usize, config.ui.show_role_labels)
                .with_preserve_empty(config.ui.word_wrap);
        let input_buffer = InputBuffer::new(
            config.input.history_size,
            config.input.multiline,
            config.input.tab_width,
        );
        let model_manager = ModelManager::new(config.general.model_cache_ttl());
        Self {
            provider,
            conversation,
            model_manager,
            input_buffer,
            formatter,
            config,
        }
    }
    /// Access the active conversation
    pub fn conversation(&self) -> &Conversation {
        self.conversation.active()
    }
    /// Mutable access to the conversation manager
    pub fn conversation_mut(&mut self) -> &mut ConversationManager {
        &mut self.conversation
    }
    /// Access input buffer
    pub fn input_buffer(&self) -> &InputBuffer {
        &self.input_buffer
    }
    /// Mutable input buffer access
    pub fn input_buffer_mut(&mut self) -> &mut InputBuffer {
        &mut self.input_buffer
    }
    /// Formatter for rendering messages
    pub fn formatter(&self) -> &MessageFormatter {
        &self.formatter
    }
    /// Update the wrap width of the message formatter
    pub fn set_formatter_wrap_width(&mut self, width: usize) {
        self.formatter.set_wrap_width(width);
    }
    /// Access configuration
    pub fn config(&self) -> &Config {
        &self.config
    }
    /// Mutable configuration access
    pub fn config_mut(&mut self) -> &mut Config {
        &mut self.config
    }
    /// Currently selected model identifier
    pub fn selected_model(&self) -> &str {
        &self.conversation.active().model
    }
    /// Change current model for upcoming requests
    pub fn set_model(&mut self, model: String) {
        self.conversation.set_model(model.clone());
        self.config.general.default_model = Some(model);
    }
    /// Retrieve cached models, refreshing from provider as needed
    pub async fn models(&self, force_refresh: bool) -> Result<Vec<ModelInfo>> {
        self.model_manager
            .get_or_refresh(force_refresh, || async {
                self.provider.list_models().await
            })
            .await
    }
    /// Attempt to select the configured default model from cached models
    pub fn ensure_default_model(&mut self, models: &[ModelInfo]) {
        if let Some(default) = self.config.general.default_model.clone() {
            if models.iter().any(|m| m.id == default || m.name == default) {
                self.set_model(default);
            }
        } else if let Some(model) = models.first() {
            self.set_model(model.id.clone());
        }
    }
    /// Submit a user message; optionally stream the response
    pub async fn send_message(
        &mut self,
        content: String,
        mut parameters: ChatParameters,
    ) -> Result<SessionOutcome> {
        let streaming = parameters.stream || self.config.general.enable_streaming;
        parameters.stream = streaming;
        self.conversation.push_user_message(content);
        self.send_request_with_current_conversation(parameters)
            .await
    }
    /// Send a request using the current conversation without adding a new user message
    pub async fn send_request_with_current_conversation(
        &mut self,
        mut parameters: ChatParameters,
    ) -> Result<SessionOutcome> {
        let streaming = parameters.stream || self.config.general.enable_streaming;
        parameters.stream = streaming;
        let request = ChatRequest {
            model: self.conversation.active().model.clone(),
            messages: self.conversation.active().messages.clone(),
            parameters,
        };
        if streaming {
            match self.provider.chat_stream(request).await {
                Ok(stream) => {
                    let response_id = self.conversation.start_streaming_response();
                    Ok(SessionOutcome::Streaming {
                        response_id,
                        stream,
                    })
                }
                Err(err) => {
                    self.conversation
                        .push_assistant_message(format!("Error starting stream: {}", err));
                    Err(err)
                }
            }
        } else {
            match self.provider.chat(request).await {
                Ok(response) => {
                    self.conversation.push_message(response.message.clone());
                    Ok(SessionOutcome::Complete(response))
                }
                Err(err) => {
                    self.conversation
                        .push_assistant_message(format!("Error: {}", err));
                    Err(err)
                }
            }
        }
    }
    /// Mark a streaming response message with placeholder content
    pub fn mark_stream_placeholder(&mut self, message_id: Uuid, text: &str) -> Result<()> {
        self.conversation
            .set_stream_placeholder(message_id, text.to_string())
    }
    /// Apply streaming chunk to the conversation
    pub fn apply_stream_chunk(&mut self, message_id: Uuid, chunk: &ChatResponse) -> Result<()> {
        self.conversation
            .append_stream_chunk(message_id, &chunk.message.content, chunk.is_final)
    }
    /// Access conversation history
    pub fn history(&self) -> Vec<Conversation> {
        self.conversation.history().cloned().collect()
    }
    /// Start a new conversation optionally targeting a specific model
    pub fn start_new_conversation(&mut self, model: Option<String>, name: Option<String>) {
        self.conversation.start_new(model, name);
    }
    /// Clear current conversation messages
    pub fn clear(&mut self) {
        self.conversation.clear();
    }
 }
--- a/crates/owlen-core/src/types.rs
+++ b/crates/owlen-core/src/types.rs
@@ -1,193 +0,0 @@
 //! Core types used across OWLEN
 use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
 use std::fmt;
 use uuid::Uuid;
 /// A message in a conversation
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
 pub struct Message {
    /// Unique identifier for this message
    pub id: Uuid,
    /// Role of the message sender (user, assistant, system)
    pub role: Role,
    /// Content of the message
    pub content: String,
    /// Optional metadata
    pub metadata: HashMap<String, serde_json::Value>,
    /// Timestamp when the message was created
    pub timestamp: std::time::SystemTime,
 }
 /// Role of a message sender
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
 #[serde(rename_all = "lowercase")]
 pub enum Role {
    /// Message from the user
    User,
    /// Message from the AI assistant
    Assistant,
    /// System message (prompts, context, etc.)
    System,
 }
 impl fmt::Display for Role {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        let label = match self {
            Role::User => "user",
            Role::Assistant => "assistant",
            Role::System => "system",
        };
        f.write_str(label)
    }
 }
 /// A conversation containing multiple messages
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct Conversation {
    /// Unique identifier for this conversation
    pub id: Uuid,
    /// Optional name/title for the conversation
    pub name: Option<String>,
    /// Messages in chronological order
    pub messages: Vec<Message>,
    /// Model used for this conversation
    pub model: String,
    /// When the conversation was created
    pub created_at: std::time::SystemTime,
    /// When the conversation was last updated
    pub updated_at: std::time::SystemTime,
 }
 /// Configuration for a chat completion request
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct ChatRequest {
    /// The model to use for completion
    pub model: String,
    /// The conversation messages
    pub messages: Vec<Message>,
    /// Optional parameters for the request
    pub parameters: ChatParameters,
 }
 /// Parameters for chat completion
 #[derive(Debug, Clone, Serialize, Deserialize, Default)]
 pub struct ChatParameters {
    /// Temperature for randomness (0.0 to 2.0)
    #[serde(skip_serializing_if = "Option::is_none")]
    pub temperature: Option<f32>,
    /// Maximum tokens to generate
    #[serde(skip_serializing_if = "Option::is_none")]
    pub max_tokens: Option<u32>,
    /// Whether to stream the response
    #[serde(default)]
    pub stream: bool,
    /// Additional provider-specific parameters
    #[serde(flatten)]
    #[serde(default)]
    pub extra: HashMap<String, serde_json::Value>,
 }
 /// Response from a chat completion request
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct ChatResponse {
    /// The generated message
    pub message: Message,
    /// Token usage information
    pub usage: Option<TokenUsage>,
    /// Whether this is a streaming chunk
    #[serde(default)]
    pub is_streaming: bool,
    /// Whether this is the final chunk in a stream
    #[serde(default)]
    pub is_final: bool,
 }
 /// Token usage information
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct TokenUsage {
    /// Tokens in the prompt
    pub prompt_tokens: u32,
    /// Tokens in the completion
    pub completion_tokens: u32,
    /// Total tokens used
    pub total_tokens: u32,
 }
 /// Information about an available model
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct ModelInfo {
    /// Model identifier
    pub id: String,
    /// Human-readable name
    pub name: String,
    /// Model description
    pub description: Option<String>,
    /// Provider that hosts this model
    pub provider: String,
    /// Context window size
    pub context_window: Option<u32>,
    /// Additional capabilities
    pub capabilities: Vec<String>,
 }
 impl Message {
    /// Create a new message
    pub fn new(role: Role, content: String) -> Self {
        Self {
            id: Uuid::new_v4(),
            role,
            content,
            metadata: HashMap::new(),
            timestamp: std::time::SystemTime::now(),
        }
    }
    /// Create a user message
    pub fn user(content: String) -> Self {
        Self::new(Role::User, content)
    }
    /// Create an assistant message
    pub fn assistant(content: String) -> Self {
        Self::new(Role::Assistant, content)
    }
    /// Create a system message
    pub fn system(content: String) -> Self {
        Self::new(Role::System, content)
    }
 }
 impl Conversation {
    /// Create a new conversation
    pub fn new(model: String) -> Self {
        let now = std::time::SystemTime::now();
        Self {
            id: Uuid::new_v4(),
            name: None,
            messages: Vec::new(),
            model,
            created_at: now,
            updated_at: now,
        }
    }
    /// Add a message to the conversation
    pub fn add_message(&mut self, message: Message) {
        self.messages.push(message);
        self.updated_at = std::time::SystemTime::now();
    }
    /// Get the last message in the conversation
    pub fn last_message(&self) -> Option<&Message> {
        self.messages.last()
    }
    /// Clear all messages
    pub fn clear(&mut self) {
        self.messages.clear();
        self.updated_at = std::time::SystemTime::now();
    }
 }
--- a/crates/owlen-core/src/ui.rs
+++ b/crates/owlen-core/src/ui.rs
@@ -1,419 +0,0 @@
 //! Shared UI components and state management for TUI applications
 //!
 //! This module contains reusable UI components that can be shared between
 //! different TUI applications (chat, code, etc.)
 use std::fmt;
 /// Application state
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum AppState {
    Running,
    Quit,
 }
 /// Input modes for TUI applications
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum InputMode {
    Normal,
    Editing,
    ProviderSelection,
    ModelSelection,
    Help,
    Visual,
    Command,
 }
 impl fmt::Display for InputMode {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        let label = match self {
            InputMode::Normal => "Normal",
            InputMode::Editing => "Editing",
            InputMode::ModelSelection => "Model",
            InputMode::ProviderSelection => "Provider",
            InputMode::Help => "Help",
            InputMode::Visual => "Visual",
            InputMode::Command => "Command",
        };
        f.write_str(label)
    }
 }
 /// Represents which panel is currently focused
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum FocusedPanel {
    Chat,
    Thinking,
    Input,
 }
 /// Auto-scroll state manager for scrollable panels
 #[derive(Debug, Clone)]
 pub struct AutoScroll {
    pub scroll: usize,
    pub content_len: usize,
    pub stick_to_bottom: bool,
 }
 impl Default for AutoScroll {
    fn default() -> Self {
        Self {
            scroll: 0,
            content_len: 0,
            stick_to_bottom: true,
        }
    }
 }
 impl AutoScroll {
    /// Update scroll position based on viewport height
    pub fn on_viewport(&mut self, viewport_h: usize) {
        let max = self.content_len.saturating_sub(viewport_h);
        if self.stick_to_bottom {
            self.scroll = max;
        } else {
            self.scroll = self.scroll.min(max);
        }
    }
    /// Handle user scroll input
    pub fn on_user_scroll(&mut self, delta: isize, viewport_h: usize) {
        let max = self.content_len.saturating_sub(viewport_h) as isize;
        let s = (self.scroll as isize + delta).clamp(0, max) as usize;
        self.scroll = s;
        self.stick_to_bottom = s as isize == max;
    }
    /// Scroll down half page
    pub fn scroll_half_page_down(&mut self, viewport_h: usize) {
        let delta = (viewport_h / 2) as isize;
        self.on_user_scroll(delta, viewport_h);
    }
    /// Scroll up half page
    pub fn scroll_half_page_up(&mut self, viewport_h: usize) {
        let delta = -((viewport_h / 2) as isize);
        self.on_user_scroll(delta, viewport_h);
    }
    /// Scroll down full page
    pub fn scroll_full_page_down(&mut self, viewport_h: usize) {
        let delta = viewport_h as isize;
        self.on_user_scroll(delta, viewport_h);
    }
    /// Scroll up full page
    pub fn scroll_full_page_up(&mut self, viewport_h: usize) {
        let delta = -(viewport_h as isize);
        self.on_user_scroll(delta, viewport_h);
    }
    /// Jump to top
    pub fn jump_to_top(&mut self) {
        self.scroll = 0;
        self.stick_to_bottom = false;
    }
    /// Jump to bottom
    pub fn jump_to_bottom(&mut self, viewport_h: usize) {
        self.stick_to_bottom = true;
        self.on_viewport(viewport_h);
    }
 }
 /// Visual selection state for text selection
 #[derive(Debug, Clone, Default)]
 pub struct VisualSelection {
    pub start: Option<(usize, usize)>, // (row, col)
    pub end: Option<(usize, usize)>,   // (row, col)
 }
 impl VisualSelection {
    pub fn new() -> Self {
        Self::default()
    }
    pub fn start_at(&mut self, pos: (usize, usize)) {
        self.start = Some(pos);
        self.end = Some(pos);
    }
    pub fn extend_to(&mut self, pos: (usize, usize)) {
        self.end = Some(pos);
    }
    pub fn clear(&mut self) {
        self.start = None;
        self.end = None;
    }
    pub fn is_active(&self) -> bool {
        self.start.is_some() && self.end.is_some()
    }
    pub fn get_normalized(&self) -> Option<((usize, usize), (usize, usize))> {
        if let (Some(s), Some(e)) = (self.start, self.end) {
            // Normalize selection so start is always before end
            if s.0 < e.0 || (s.0 == e.0 && s.1 <= e.1) {
                Some((s, e))
            } else {
                Some((e, s))
            }
        } else {
            None
        }
    }
 }
 /// Extract text from a selection range in a list of lines
 pub fn extract_text_from_selection(
    lines: &[String],
    start: (usize, usize),
    end: (usize, usize),
 ) -> Option<String> {
    if lines.is_empty() || start.0 >= lines.len() {
        return None;
    }
    let start_row = start.0;
    let start_col = start.1;
    let end_row = end.0.min(lines.len() - 1);
    let end_col = end.1;
    if start_row == end_row {
        // Single line selection
        let line = &lines[start_row];
        let chars: Vec<char> = line.chars().collect();
        let start_c = start_col.min(chars.len());
        let end_c = end_col.min(chars.len());
        if start_c >= end_c {
            return None;
        }
        let selected: String = chars[start_c..end_c].iter().collect();
        Some(selected)
    } else {
        // Multi-line selection
        let mut result = Vec::new();
        // First line: from start_col to end
        let first_line = &lines[start_row];
        let first_chars: Vec<char> = first_line.chars().collect();
        let start_c = start_col.min(first_chars.len());
        if start_c < first_chars.len() {
            result.push(first_chars[start_c..].iter().collect::<String>());
        }
        // Middle lines: entire lines
        for row in (start_row + 1)..end_row {
            if row < lines.len() {
                result.push(lines[row].clone());
            }
        }
        // Last line: from start to end_col
        if end_row < lines.len() && end_row > start_row {
            let last_line = &lines[end_row];
            let last_chars: Vec<char> = last_line.chars().collect();
            let end_c = end_col.min(last_chars.len());
            if end_c > 0 {
                result.push(last_chars[..end_c].iter().collect::<String>());
            }
        }
        if result.is_empty() {
            None
        } else {
            Some(result.join("\n"))
        }
    }
 }
 /// Cursor position for navigating scrollable content
 #[derive(Debug, Clone, Copy, Default)]
 pub struct CursorPosition {
    pub row: usize,
    pub col: usize,
 }
 impl CursorPosition {
    pub fn new(row: usize, col: usize) -> Self {
        Self { row, col }
    }
    pub fn move_up(&mut self, amount: usize) {
        self.row = self.row.saturating_sub(amount);
    }
    pub fn move_down(&mut self, amount: usize, max: usize) {
        self.row = (self.row + amount).min(max);
    }
    pub fn move_left(&mut self, amount: usize) {
        self.col = self.col.saturating_sub(amount);
    }
    pub fn move_right(&mut self, amount: usize, max: usize) {
        self.col = (self.col + amount).min(max);
    }
    pub fn as_tuple(&self) -> (usize, usize) {
        (self.row, self.col)
    }
 }
 /// Word boundary detection for navigation
 pub fn find_next_word_boundary(line: &str, col: usize) -> Option<usize> {
    let chars: Vec<char> = line.chars().collect();
    if col >= chars.len() {
        return Some(chars.len());
    }
    let mut pos = col;
    let is_word_char = |c: char| c.is_alphanumeric() || c == '_';
    // Skip current word
    if is_word_char(chars[pos]) {
        while pos < chars.len() && is_word_char(chars[pos]) {
            pos += 1;
        }
    } else {
        // Skip non-word characters
        while pos < chars.len() && !is_word_char(chars[pos]) {
            pos += 1;
        }
    }
    Some(pos)
 }
 pub fn find_word_end(line: &str, col: usize) -> Option<usize> {
    let chars: Vec<char> = line.chars().collect();
    if col >= chars.len() {
        return Some(chars.len());
    }
    let mut pos = col;
    let is_word_char = |c: char| c.is_alphanumeric() || c == '_';
    // If on a word character, move to end of current word
    if is_word_char(chars[pos]) {
        while pos < chars.len() && is_word_char(chars[pos]) {
            pos += 1;
        }
        // Move back one to be ON the last character
        pos = pos.saturating_sub(1);
    } else {
        // Skip non-word characters
        while pos < chars.len() && !is_word_char(chars[pos]) {
            pos += 1;
        }
        // Now on first char of next word, move to its end
        while pos < chars.len() && is_word_char(chars[pos]) {
            pos += 1;
        }
        pos = pos.saturating_sub(1);
    }
    Some(pos)
 }
 pub fn find_prev_word_boundary(line: &str, col: usize) -> Option<usize> {
    let chars: Vec<char> = line.chars().collect();
    if col == 0 || chars.is_empty() {
        return Some(0);
    }
    let mut pos = col.min(chars.len());
    let is_word_char = |c: char| c.is_alphanumeric() || c == '_';
    // Move back one position first
    pos = pos.saturating_sub(1);
    // Skip non-word characters
    while pos > 0 && !is_word_char(chars[pos]) {
        pos -= 1;
    }
    // Skip word characters to find start of word
    while pos > 0 && is_word_char(chars[pos - 1]) {
        pos -= 1;
    }
    Some(pos)
 }
 #[cfg(test)]
 mod tests {
    use super::*;
    #[test]
    fn test_auto_scroll() {
        let mut scroll = AutoScroll::default();
        scroll.content_len = 100;
        // Test on_viewport with stick_to_bottom
        scroll.on_viewport(10);
        assert_eq!(scroll.scroll, 90);
        // Test user scroll up
        scroll.on_user_scroll(-10, 10);
        assert_eq!(scroll.scroll, 80);
        assert!(!scroll.stick_to_bottom);
        // Test jump to bottom
        scroll.jump_to_bottom(10);
        assert!(scroll.stick_to_bottom);
        assert_eq!(scroll.scroll, 90);
    }
    #[test]
    fn test_visual_selection() {
        let mut selection = VisualSelection::new();
        assert!(!selection.is_active());
        selection.start_at((0, 0));
        assert!(selection.is_active());
        selection.extend_to((2, 5));
        let normalized = selection.get_normalized();
        assert_eq!(normalized, Some(((0, 0), (2, 5))));
        selection.clear();
        assert!(!selection.is_active());
    }
    #[test]
    fn test_extract_text_single_line() {
        let lines = vec!["Hello World".to_string()];
        let result = extract_text_from_selection(&lines, (0, 0), (0, 5));
        assert_eq!(result, Some("Hello".to_string()));
    }
    #[test]
    fn test_extract_text_multi_line() {
        let lines = vec![
            "First line".to_string(),
            "Second line".to_string(),
            "Third line".to_string(),
        ];
        let result = extract_text_from_selection(&lines, (0, 6), (2, 5));
        assert_eq!(result, Some("line\nSecond line\nThird".to_string()));
    }
    #[test]
    fn test_word_boundaries() {
        let line = "hello world test";
        assert_eq!(find_next_word_boundary(line, 0), Some(5));
        assert_eq!(find_next_word_boundary(line, 5), Some(6));
        assert_eq!(find_next_word_boundary(line, 6), Some(11));
        assert_eq!(find_prev_word_boundary(line, 16), Some(12));
        assert_eq!(find_prev_word_boundary(line, 11), Some(6));
        assert_eq!(find_prev_word_boundary(line, 6), Some(0));
    }
 }
--- a/crates/owlen-core/src/wrap_cursor.rs
+++ b/crates/owlen-core/src/wrap_cursor.rs
@@ -1,90 +0,0 @@
 #![allow(clippy::cast_possible_truncation)]
 use unicode_segmentation::UnicodeSegmentation;
 use unicode_width::UnicodeWidthStr;
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub struct ScreenPos {
    pub row: u16,
    pub col: u16,
 }
 pub fn build_cursor_map(text: &str, width: u16) -> Vec<ScreenPos> {
    assert!(width > 0);
    let width = width as usize;
    let mut pos_map = vec![ScreenPos { row: 0, col: 0 }; text.len() + 1];
    let mut row = 0;
    let mut col = 0;
    let mut word_start_idx = 0;
    let mut word_start_col = 0;
    for (byte_offset, grapheme) in text.grapheme_indices(true) {
        let grapheme_width = UnicodeWidthStr::width(grapheme);
        if grapheme == "\n" {
            row += 1;
            col = 0;
            word_start_col = 0;
            word_start_idx = byte_offset + grapheme.len();
            // Set position for the end of this grapheme and any intermediate bytes
            let end_pos = ScreenPos {
                row: row as u16,
                col: col as u16,
            };
            for i in 1..=grapheme.len() {
                if byte_offset + i < pos_map.len() {
                    pos_map[byte_offset + i] = end_pos;
                }
            }
            continue;
        }
        if grapheme.chars().all(char::is_whitespace) {
            if col + grapheme_width > width {
                // Whitespace causes wrap
                row += 1;
                col = 1; // Position after wrapping space
                word_start_col = 1;
                word_start_idx = byte_offset + grapheme.len();
            } else {
                col += grapheme_width;
                word_start_col = col;
                word_start_idx = byte_offset + grapheme.len();
            }
        } else if col + grapheme_width > width {
            if word_start_col > 0 && byte_offset == word_start_idx {
                // This is the first character of a new word that won't fit, wrap it
                row += 1;
                col = grapheme_width;
            } else if word_start_col == 0 {
                // No previous word boundary, hard break
                row += 1;
                col = grapheme_width;
            } else {
                // This is part of a word already on the line, let it extend beyond width
                col += grapheme_width;
            }
        } else {
            col += grapheme_width;
        }
        // Set position for the end of this grapheme and any intermediate bytes
        let end_pos = ScreenPos {
            row: row as u16,
            col: col as u16,
        };
        for i in 1..=grapheme.len() {
            if byte_offset + i < pos_map.len() {
                pos_map[byte_offset + i] = end_pos;
            }
        }
    }
    pos_map
 }
 pub fn byte_to_screen_pos(text: &str, byte_idx: usize, width: u16) -> ScreenPos {
    let pos_map = build_cursor_map(text, width);
    pos_map[byte_idx.min(text.len())]
 }
--- a/crates/owlen-core/tests/long_word_debug.rs
+++ b/crates/owlen-core/tests/long_word_debug.rs
@@ -1,115 +0,0 @@
 use owlen_core::wrap_cursor::build_cursor_map;
 #[test]
 fn debug_long_word_wrapping() {
    // Test the exact scenario from the user's issue
    let text = "asdnklasdnaklsdnkalsdnaskldaskldnaskldnaskldnaskldnaskldnaskldnaskld asdnklska dnskadl dasnksdl asdn";
    let width = 50; // Approximate width from the user's example
    println!("Testing long word text with width {}", width);
    println!("Text: '{}'", text);
    // Check what the cursor map shows
    let cursor_map = build_cursor_map(text, width);
    println!("\nCursor map for key positions:");
    let long_word_end = text.find(' ').unwrap_or(text.len());
    for i in [
        0,
        10,
        20,
        30,
        40,
        50,
        60,
        70,
        long_word_end,
        long_word_end + 1,
        text.len(),
    ] {
        if i <= text.len() {
            let pos = cursor_map[i];
            let char_at = if i < text.len() {
                format!("'{}'", text.chars().nth(i).unwrap_or('?'))
            } else {
                "END".to_string()
            };
            println!(
                "  Byte {}: {} -> row {}, col {}",
                i, char_at, pos.row, pos.col
            );
        }
    }
    // Test what my formatting function produces
    let lines = format_text_with_word_wrap_debug(text, width);
    println!("\nFormatted lines:");
    for (i, line) in lines.iter().enumerate() {
        println!("  Line {}: '{}' (length: {})", i, line, line.len());
    }
    // The long word should be broken up, not kept on one line
    assert!(
        lines[0].len() <= width as usize + 5,
        "First line is too long: {} chars",
        lines[0].len()
    );
 }
 fn format_text_with_word_wrap_debug(text: &str, width: u16) -> Vec<String> {
    if text.is_empty() {
        return vec!["".to_string()];
    }
    // Use the cursor map to determine where line breaks should occur
    let cursor_map = build_cursor_map(text, width);
    let mut lines = Vec::new();
    let mut current_line = String::new();
    let mut current_row = 0;
    for (byte_idx, ch) in text.char_indices() {
        let pos_before = if byte_idx > 0 {
            cursor_map[byte_idx]
        } else {
            cursor_map[0]
        };
        let pos_after = cursor_map[byte_idx + ch.len_utf8()];
        println!(
            "Processing '{}' at byte {}: before=({},{}) after=({},{})",
            ch, byte_idx, pos_before.row, pos_before.col, pos_after.row, pos_after.col
        );
        // If the row changed, we need to start a new line
        if pos_after.row > current_row {
            println!(
                "  Row changed from {} to {}! Finishing line: '{}'",
                current_row, pos_after.row, current_line
            );
            if !current_line.is_empty() {
                lines.push(current_line.clone());
                current_line.clear();
            }
            current_row = pos_after.row;
            // If this character is a space that caused the wrap, don't include it
            if ch.is_whitespace() && pos_before.row < pos_after.row {
                println!("  Skipping wrapping space");
                continue; // Skip the wrapping space
            }
        }
        current_line.push(ch);
    }
    // Add the final line
    if !current_line.is_empty() {
        lines.push(current_line);
    } else if lines.is_empty() {
        lines.push("".to_string());
    }
    lines
 }
--- a/crates/owlen-core/tests/wrap_cursor_tests.rs
+++ b/crates/owlen-core/tests/wrap_cursor_tests.rs
@@ -1,96 +0,0 @@
 #![allow(non_snake_case)]
 use owlen_core::wrap_cursor::{build_cursor_map, ScreenPos};
 fn assert_cursor_pos(map: &[ScreenPos], byte_idx: usize, expected: ScreenPos) {
    assert_eq!(map[byte_idx], expected, "Mismatch at byte {}", byte_idx);
 }
 #[test]
 fn test_basic_wrap_at_spaces() {
    let text = "hello world";
    let width = 5;
    let map = build_cursor_map(text, width);
    assert_cursor_pos(&map, 0, ScreenPos { row: 0, col: 0 });
    assert_cursor_pos(&map, 5, ScreenPos { row: 0, col: 5 }); // after "hello"
    assert_cursor_pos(&map, 6, ScreenPos { row: 1, col: 1 }); // after "hello "
    assert_cursor_pos(&map, 11, ScreenPos { row: 1, col: 6 }); // after "world"
 }
 #[test]
 fn test_hard_line_break() {
    let text = "a\nb";
    let width = 10;
    let map = build_cursor_map(text, width);
    assert_cursor_pos(&map, 0, ScreenPos { row: 0, col: 0 });
    assert_cursor_pos(&map, 1, ScreenPos { row: 0, col: 1 }); // after "a"
    assert_cursor_pos(&map, 2, ScreenPos { row: 1, col: 0 }); // after "\n"
    assert_cursor_pos(&map, 3, ScreenPos { row: 1, col: 1 }); // after "b"
 }
 #[test]
 fn test_long_word_split() {
    let text = "abcdefgh";
    let width = 3;
    let map = build_cursor_map(text, width);
    assert_cursor_pos(&map, 0, ScreenPos { row: 0, col: 0 });
    assert_cursor_pos(&map, 1, ScreenPos { row: 0, col: 1 });
    assert_cursor_pos(&map, 2, ScreenPos { row: 0, col: 2 });
    assert_cursor_pos(&map, 3, ScreenPos { row: 0, col: 3 });
    assert_cursor_pos(&map, 4, ScreenPos { row: 1, col: 1 });
    assert_cursor_pos(&map, 5, ScreenPos { row: 1, col: 2 });
    assert_cursor_pos(&map, 6, ScreenPos { row: 1, col: 3 });
    assert_cursor_pos(&map, 7, ScreenPos { row: 2, col: 1 });
    assert_cursor_pos(&map, 8, ScreenPos { row: 2, col: 2 });
 }
 #[test]
 fn test_trailing_spaces_preserved() {
    let text = "x  y";
    let width = 2;
    let map = build_cursor_map(text, width);
    assert_cursor_pos(&map, 0, ScreenPos { row: 0, col: 0 });
    assert_cursor_pos(&map, 1, ScreenPos { row: 0, col: 1 }); // after "x"
    assert_cursor_pos(&map, 2, ScreenPos { row: 0, col: 2 }); // after "x "
    assert_cursor_pos(&map, 3, ScreenPos { row: 1, col: 1 }); // after "x  "
    assert_cursor_pos(&map, 4, ScreenPos { row: 1, col: 2 }); // after "y"
 }
 #[test]
 fn test_graphemes_emoji() {
    let text = "🙂🙂a";
    let width = 3;
    let map = build_cursor_map(text, width);
    assert_cursor_pos(&map, 0, ScreenPos { row: 0, col: 0 });
    assert_cursor_pos(&map, 4, ScreenPos { row: 0, col: 2 }); // after first emoji
    assert_cursor_pos(&map, 8, ScreenPos { row: 1, col: 2 }); // after second emoji
    assert_cursor_pos(&map, 9, ScreenPos { row: 1, col: 3 }); // after "a"
 }
 #[test]
 fn test_graphemes_combining() {
    let text = "e\u{0301}";
    let width = 10;
    let map = build_cursor_map(text, width);
    assert_cursor_pos(&map, 0, ScreenPos { row: 0, col: 0 });
    assert_cursor_pos(&map, 1, ScreenPos { row: 0, col: 1 }); // after "e"
    assert_cursor_pos(&map, 3, ScreenPos { row: 0, col: 1 }); // after combining mark
 }
 #[test]
 fn test_exact_edge() {
    let text = "abc def";
    let width = 3;
    let map = build_cursor_map(text, width);
    assert_cursor_pos(&map, 0, ScreenPos { row: 0, col: 0 });
    assert_cursor_pos(&map, 3, ScreenPos { row: 0, col: 3 }); // after "abc"
    assert_cursor_pos(&map, 4, ScreenPos { row: 1, col: 1 }); // after " "
    assert_cursor_pos(&map, 7, ScreenPos { row: 1, col: 4 }); // after "def"
 }
--- a/crates/owlen-ollama/Cargo.toml
+++ b/crates/owlen-ollama/Cargo.toml
@@ -1,34 +0,0 @@
 [package]
 name = "owlen-ollama"
 version.workspace = true
 edition.workspace = true
 authors.workspace = true
 license.workspace = true
 repository.workspace = true
 homepage.workspace = true
 description = "Ollama provider for OWLEN LLM client"
 [dependencies]
 owlen-core = { path = "../owlen-core" }
 # HTTP client
 reqwest = { workspace = true }
 # Async runtime
 tokio = { workspace = true }
 tokio-stream = { workspace = true }
 futures = { workspace = true }
 futures-util = { workspace = true }
 # Serialization
 serde = { workspace = true }
 serde_json = { workspace = true }
 # Utilities
 anyhow = { workspace = true }
 thiserror = { workspace = true }
 uuid = { workspace = true }
 async-trait = { workspace = true }
 [dev-dependencies]
 tokio-test = { workspace = true }
--- a/crates/owlen-ollama/src/lib.rs
+++ b/crates/owlen-ollama/src/lib.rs
@@ -1,530 +0,0 @@
 //! Ollama provider for OWLEN LLM client
 use futures_util::StreamExt;
 use owlen_core::{
    config::GeneralSettings,
    model::ModelManager,
    provider::{ChatStream, Provider, ProviderConfig},
    types::{ChatParameters, ChatRequest, ChatResponse, Message, ModelInfo, Role, TokenUsage},
    Result,
 };
 use reqwest::Client;
 use serde::{Deserialize, Serialize};
 use serde_json::{json, Value};
 use std::collections::HashMap;
 use std::io;
 use std::time::Duration;
 use tokio::sync::mpsc;
 use tokio_stream::wrappers::UnboundedReceiverStream;
 const DEFAULT_TIMEOUT_SECS: u64 = 120;
 const DEFAULT_MODEL_CACHE_TTL_SECS: u64 = 60;
 /// Ollama provider implementation with enhanced configuration and caching
 pub struct OllamaProvider {
    client: Client,
    base_url: String,
    model_manager: ModelManager,
 }
 /// Options for configuring the Ollama provider
 pub struct OllamaOptions {
    pub base_url: String,
    pub request_timeout: Duration,
    pub model_cache_ttl: Duration,
 }
 impl OllamaOptions {
    pub fn new(base_url: impl Into<String>) -> Self {
        Self {
            base_url: base_url.into(),
            request_timeout: Duration::from_secs(DEFAULT_TIMEOUT_SECS),
            model_cache_ttl: Duration::from_secs(DEFAULT_MODEL_CACHE_TTL_SECS),
        }
    }
    pub fn with_general(mut self, general: &GeneralSettings) -> Self {
        self.model_cache_ttl = general.model_cache_ttl();
        self
    }
 }
 /// Ollama-specific message format
 #[derive(Debug, Clone, Serialize, Deserialize)]
 struct OllamaMessage {
    role: String,
    content: String,
 }
 /// Ollama chat request format
 #[derive(Debug, Serialize)]
 struct OllamaChatRequest {
    model: String,
    messages: Vec<OllamaMessage>,
    stream: bool,
    #[serde(flatten)]
    options: HashMap<String, Value>,
 }
 /// Ollama chat response format
 #[derive(Debug, Deserialize)]
 struct OllamaChatResponse {
    message: Option<OllamaMessage>,
    done: bool,
    #[serde(default)]
    prompt_eval_count: Option<u32>,
    #[serde(default)]
    eval_count: Option<u32>,
    #[serde(default)]
    error: Option<String>,
 }
 #[derive(Debug, Deserialize)]
 struct OllamaErrorResponse {
    error: Option<String>,
 }
 /// Ollama models list response
 #[derive(Debug, Deserialize)]
 struct OllamaModelsResponse {
    models: Vec<OllamaModelInfo>,
 }
 /// Ollama model information
 #[derive(Debug, Deserialize)]
 struct OllamaModelInfo {
    name: String,
    #[serde(default)]
    details: Option<OllamaModelDetails>,
 }
 #[derive(Debug, Deserialize)]
 struct OllamaModelDetails {
    #[serde(default)]
    family: Option<String>,
 }
 impl OllamaProvider {
    /// Create a new Ollama provider with sensible defaults
    pub fn new(base_url: impl Into<String>) -> Result<Self> {
        Self::with_options(OllamaOptions::new(base_url))
    }
    /// Create a provider from configuration settings
    pub fn from_config(config: &ProviderConfig, general: Option<&GeneralSettings>) -> Result<Self> {
        let mut options = OllamaOptions::new(
            config
                .base_url
                .clone()
                .unwrap_or_else(|| "http://localhost:11434".to_string()),
        );
        if let Some(timeout) = config
            .extra
            .get("timeout_secs")
            .and_then(|value| value.as_u64())
        {
            options.request_timeout = Duration::from_secs(timeout.max(5));
        }
        if let Some(cache_ttl) = config
            .extra
            .get("model_cache_ttl_secs")
            .and_then(|value| value.as_u64())
        {
            options.model_cache_ttl = Duration::from_secs(cache_ttl.max(5));
        }
        if let Some(general) = general {
            options = options.with_general(general);
        }
        Self::with_options(options)
    }
    /// Create a provider from explicit options
    pub fn with_options(options: OllamaOptions) -> Result<Self> {
        let client = Client::builder()
            .timeout(options.request_timeout)
            .build()
            .map_err(|e| owlen_core::Error::Config(format!("Failed to build HTTP client: {e}")))?;
        Ok(Self {
            client,
            base_url: options.base_url.trim_end_matches('/').to_string(),
            model_manager: ModelManager::new(options.model_cache_ttl),
        })
    }
    /// Accessor for the underlying model manager
    pub fn model_manager(&self) -> &ModelManager {
        &self.model_manager
    }
    fn convert_message(message: &Message) -> OllamaMessage {
        OllamaMessage {
            role: match message.role {
                Role::User => "user".to_string(),
                Role::Assistant => "assistant".to_string(),
                Role::System => "system".to_string(),
            },
            content: message.content.clone(),
        }
    }
    fn convert_ollama_message(message: &OllamaMessage) -> Message {
        let role = match message.role.as_str() {
            "user" => Role::User,
            "assistant" => Role::Assistant,
            "system" => Role::System,
            _ => Role::Assistant,
        };
        Message::new(role, message.content.clone())
    }
    fn build_options(parameters: ChatParameters) -> HashMap<String, Value> {
        let mut options = parameters.extra;
        if let Some(temperature) = parameters.temperature {
            options
                .entry("temperature".to_string())
                .or_insert(json!(temperature as f64));
        }
        if let Some(max_tokens) = parameters.max_tokens {
            options
                .entry("num_predict".to_string())
                .or_insert(json!(max_tokens));
        }
        options
    }
    async fn fetch_models(&self) -> Result<Vec<ModelInfo>> {
        let url = format!("{}/api/tags", self.base_url);
        let response = self
            .client
            .get(&url)
            .send()
            .await
            .map_err(|e| owlen_core::Error::Network(format!("Failed to fetch models: {e}")))?;
        if !response.status().is_success() {
            let code = response.status();
            let error = parse_error_body(response).await;
            return Err(owlen_core::Error::Network(format!(
                "Ollama model listing failed ({code}): {error}"
            )));
        }
        let body = response.text().await.map_err(|e| {
            owlen_core::Error::Network(format!("Failed to read models response: {e}"))
        })?;
        let ollama_response: OllamaModelsResponse =
            serde_json::from_str(&body).map_err(owlen_core::Error::Serialization)?;
        let models = ollama_response
            .models
            .into_iter()
            .map(|model| ModelInfo {
                id: model.name.clone(),
                name: model.name.clone(),
                description: model
                    .details
                    .as_ref()
                    .and_then(|d| d.family.as_ref().map(|f| format!("Ollama {f} model"))),
                provider: "ollama".to_string(),
                context_window: None,
                capabilities: vec!["chat".to_string()],
            })
            .collect();
        Ok(models)
    }
 }
 #[async_trait::async_trait]
 impl Provider for OllamaProvider {
    fn name(&self) -> &str {
        "ollama"
    }
    async fn list_models(&self) -> Result<Vec<ModelInfo>> {
        self.model_manager
            .get_or_refresh(false, || async { self.fetch_models().await })
            .await
    }
    async fn chat(&self, request: ChatRequest) -> Result<ChatResponse> {
        let ChatRequest {
            model,
            messages,
            parameters,
        } = request;
        let messages: Vec<OllamaMessage> = messages.iter().map(Self::convert_message).collect();
        let options = Self::build_options(parameters);
        let ollama_request = OllamaChatRequest {
            model,
            messages,
            stream: false,
            options,
        };
        let url = format!("{}/api/chat", self.base_url);
        let response = self
            .client
            .post(&url)
            .json(&ollama_request)
            .send()
            .await
            .map_err(|e| owlen_core::Error::Network(format!("Chat request failed: {e}")))?;
        if !response.status().is_success() {
            let code = response.status();
            let error = parse_error_body(response).await;
            return Err(owlen_core::Error::Network(format!(
                "Ollama chat failed ({code}): {error}"
            )));
        }
        let body = response.text().await.map_err(|e| {
            owlen_core::Error::Network(format!("Failed to read chat response: {e}"))
        })?;
        let mut ollama_response: OllamaChatResponse =
            serde_json::from_str(&body).map_err(owlen_core::Error::Serialization)?;
        if let Some(error) = ollama_response.error.take() {
            return Err(owlen_core::Error::Provider(anyhow::anyhow!(error)));
        }
        let message = match ollama_response.message {
            Some(ref msg) => Self::convert_ollama_message(msg),
            None => {
                return Err(owlen_core::Error::Provider(anyhow::anyhow!(
                    "Ollama response missing message"
                )))
            }
        };
        let usage = if let (Some(prompt_tokens), Some(completion_tokens)) = (
            ollama_response.prompt_eval_count,
            ollama_response.eval_count,
        ) {
            Some(TokenUsage {
                prompt_tokens,
                completion_tokens,
                total_tokens: prompt_tokens + completion_tokens,
            })
        } else {
            None
        };
        Ok(ChatResponse {
            message,
            usage,
            is_streaming: false,
            is_final: true,
        })
    }
    async fn chat_stream(&self, request: ChatRequest) -> Result<ChatStream> {
        let ChatRequest {
            model,
            messages,
            parameters,
        } = request;
        let messages: Vec<OllamaMessage> = messages.iter().map(Self::convert_message).collect();
        let options = Self::build_options(parameters);
        let ollama_request = OllamaChatRequest {
            model,
            messages,
            stream: true,
            options,
        };
        let url = format!("{}/api/chat", self.base_url);
        let response = self
            .client
            .post(&url)
            .json(&ollama_request)
            .send()
            .await
            .map_err(|e| owlen_core::Error::Network(format!("Streaming request failed: {e}")))?;
        if !response.status().is_success() {
            let code = response.status();
            let error = parse_error_body(response).await;
            return Err(owlen_core::Error::Network(format!(
                "Ollama streaming chat failed ({code}): {error}"
            )));
        }
        let (tx, rx) = mpsc::unbounded_channel();
        let mut stream = response.bytes_stream();
        tokio::spawn(async move {
            let mut buffer = String::new();
            while let Some(chunk) = stream.next().await {
                match chunk {
                    Ok(bytes) => {
                        if let Ok(text) = String::from_utf8(bytes.to_vec()) {
                            buffer.push_str(&text);
                            while let Some(pos) = buffer.find('\n') {
                                let mut line = buffer[..pos].trim().to_string();
                                buffer.drain(..=pos);
                                if line.is_empty() {
                                    continue;
                                }
                                if line.ends_with('\r') {
                                    line.pop();
                                }
                                match serde_json::from_str::<OllamaChatResponse>(&line) {
                                    Ok(mut ollama_response) => {
                                        if let Some(error) = ollama_response.error.take() {
                                            let _ = tx.send(Err(owlen_core::Error::Provider(
                                                anyhow::anyhow!(error),
                                            )));
                                            break;
                                        }
                                        if let Some(message) = ollama_response.message {
                                            let mut chat_response = ChatResponse {
                                                message: Self::convert_ollama_message(&message),
                                                usage: None,
                                                is_streaming: true,
                                                is_final: ollama_response.done,
                                            };
                                            if let (Some(prompt_tokens), Some(completion_tokens)) = (
                                                ollama_response.prompt_eval_count,
                                                ollama_response.eval_count,
                                            ) {
                                                chat_response.usage = Some(TokenUsage {
                                                    prompt_tokens,
                                                    completion_tokens,
                                                    total_tokens: prompt_tokens + completion_tokens,
                                                });
                                            }
                                            if tx.send(Ok(chat_response)).is_err() {
                                                break;
                                            }
                                            if ollama_response.done {
                                                break;
                                            }
                                        }
                                    }
                                    Err(e) => {
                                        let _ = tx.send(Err(owlen_core::Error::Serialization(e)));
                                        break;
                                    }
                                }
                            }
                        } else {
                            let _ = tx.send(Err(owlen_core::Error::Serialization(
                                serde_json::Error::io(io::Error::new(
                                    io::ErrorKind::InvalidData,
                                    "Non UTF-8 chunk from Ollama",
                                )),
                            )));
                            break;
                        }
                    }
                    Err(e) => {
                        let _ = tx.send(Err(owlen_core::Error::Network(format!(
                            "Stream error: {e}"
                        ))));
                        break;
                    }
                }
            }
        });
        let stream = UnboundedReceiverStream::new(rx);
        Ok(Box::pin(stream))
    }
    async fn health_check(&self) -> Result<()> {
        let url = format!("{}/api/version", self.base_url);
        let response = self
            .client
            .get(&url)
            .send()
            .await
            .map_err(|e| owlen_core::Error::Network(format!("Health check failed: {e}")))?;
        if response.status().is_success() {
            Ok(())
        } else {
            Err(owlen_core::Error::Network(format!(
                "Ollama health check failed: HTTP {}",
                response.status()
            )))
        }
    }
    fn config_schema(&self) -> serde_json::Value {
        serde_json::json!({
            "type": "object",
            "properties": {
                "base_url": {
                    "type": "string",
                    "description": "Base URL for Ollama API",
                    "default": "http://localhost:11434"
                },
                "timeout_secs": {
                    "type": "integer",
                    "description": "HTTP request timeout in seconds",
                    "minimum": 5,
                    "default": DEFAULT_TIMEOUT_SECS
                },
                "model_cache_ttl_secs": {
                    "type": "integer",
                    "description": "Seconds to cache model listings",
                    "minimum": 5,
                    "default": DEFAULT_MODEL_CACHE_TTL_SECS
                }
            }
        })
    }
 }
 async fn parse_error_body(response: reqwest::Response) -> String {
    match response.bytes().await {
        Ok(bytes) => {
            if bytes.is_empty() {
                return "unknown error".to_string();
            }
            if let Ok(err) = serde_json::from_slice::<OllamaErrorResponse>(&bytes) {
                if let Some(error) = err.error {
                    return error;
                }
            }
            match String::from_utf8(bytes.to_vec()) {
                Ok(text) if !text.trim().is_empty() => text,
                _ => "unknown error".to_string(),
            }
        }
        Err(_) => "unknown error".to_string(),
    }
 }
--- a/crates/owlen-tui/Cargo.toml
+++ b/crates/owlen-tui/Cargo.toml
@@ -1,32 +0,0 @@
 [package]
 name = "owlen-tui"
 version.workspace = true
 edition.workspace = true
 authors.workspace = true
 license.workspace = true
 repository.workspace = true
 homepage.workspace = true
 description = "Terminal User Interface for OWLEN LLM client"
 [dependencies]
 owlen-core = { path = "../owlen-core" }
 # TUI framework
 ratatui = { workspace = true }
 crossterm = { workspace = true }
 tui-textarea = { workspace = true }
 textwrap = { workspace = true }
 unicode-width = "0.1"
 # Async runtime
 tokio = { workspace = true }
 tokio-util = { workspace = true }
 futures-util = { workspace = true }
 # Utilities
 anyhow = { workspace = true }
 uuid = { workspace = true }
 [dev-dependencies]
 tokio-test = { workspace = true }
 tempfile = { workspace = true }
--- a/crates/owlen-tui/src/chat_app.rs
+++ b/crates/owlen-tui/src/chat_app.rs
--- a/crates/owlen-tui/src/code_app.rs
+++ b/crates/owlen-tui/src/code_app.rs
@@ -1,44 +0,0 @@
 use anyhow::Result;
 use owlen_core::session::SessionController;
 use owlen_core::ui::{AppState, InputMode};
 use tokio::sync::mpsc;
 use crate::chat_app::{ChatApp, SessionEvent};
 use crate::events::Event;
 const DEFAULT_SYSTEM_PROMPT: &str =
    "You are OWLEN Code Assistant. Provide detailed, actionable programming help.";
 pub struct CodeApp {
    inner: ChatApp,
 }
 impl CodeApp {
    pub fn new(mut controller: SessionController) -> (Self, mpsc::UnboundedReceiver<SessionEvent>) {
        controller
            .conversation_mut()
            .push_system_message(DEFAULT_SYSTEM_PROMPT.to_string());
        let (inner, rx) = ChatApp::new(controller);
        (Self { inner }, rx)
    }
    pub async fn handle_event(&mut self, event: Event) -> Result<AppState> {
        self.inner.handle_event(event).await
    }
    pub fn handle_session_event(&mut self, event: SessionEvent) -> Result<()> {
        self.inner.handle_session_event(event)
    }
    pub fn mode(&self) -> InputMode {
        self.inner.mode()
    }
    pub fn inner(&self) -> &ChatApp {
        &self.inner
    }
    pub fn inner_mut(&mut self) -> &mut ChatApp {
        &mut self.inner
    }
 }
--- a/crates/owlen-tui/src/config.rs
+++ b/crates/owlen-tui/src/config.rs
@@ -1,16 +0,0 @@
 pub use owlen_core::config::{
    default_config_path, ensure_ollama_config, session_timeout, Config, GeneralSettings,
    InputSettings, StorageSettings, UiSettings, DEFAULT_CONFIG_PATH,
 };
 /// Attempt to load configuration from default location
 pub fn try_load_config() -> Option<Config> {
    Config::load(None).ok()
 }
 /// Persist configuration to default path
 pub fn save_config(config: &Config) -> anyhow::Result<()> {
    config
        .save(None)
        .map_err(|e| anyhow::anyhow!(e.to_string()))
 }
--- a/crates/owlen-tui/src/events.rs
+++ b/crates/owlen-tui/src/events.rs
@@ -1,210 +0,0 @@
 use crossterm::event::{self, KeyCode, KeyEvent, KeyEventKind, KeyModifiers};
 use std::time::Duration;
 use tokio::sync::mpsc;
 use tokio_util::sync::CancellationToken;
 /// Application events
 #[derive(Debug, Clone)]
 pub enum Event {
    /// Terminal key press event
    Key(KeyEvent),
    /// Terminal resize event
    #[allow(dead_code)]
    Resize(u16, u16),
    /// Paste event
    Paste(String),
    /// Tick event for regular updates
    Tick,
 }
 /// Event handler that captures terminal events and sends them to the application
 pub struct EventHandler {
    sender: mpsc::UnboundedSender<Event>,
    tick_rate: Duration,
    cancellation_token: CancellationToken,
 }
 impl EventHandler {
    pub fn new(
        sender: mpsc::UnboundedSender<Event>,
        cancellation_token: CancellationToken,
    ) -> Self {
        Self {
            sender,
            tick_rate: Duration::from_millis(250), // 4 times per second
            cancellation_token,
        }
    }
    pub async fn run(&self) {
        let mut last_tick = tokio::time::Instant::now();
        loop {
            if self.cancellation_token.is_cancelled() {
                break;
            }
            let timeout = self
                .tick_rate
                .checked_sub(last_tick.elapsed())
                .unwrap_or_else(|| Duration::from_secs(0));
            if event::poll(timeout).unwrap_or(false) {
                match event::read() {
                    Ok(event) => {
                        match event {
                            crossterm::event::Event::Key(key) => {
                                // Only handle KeyEventKind::Press to avoid duplicate events
                                if key.kind == KeyEventKind::Press {
                                    let _ = self.sender.send(Event::Key(key));
                                }
                            }
                            crossterm::event::Event::Resize(width, height) => {
                                let _ = self.sender.send(Event::Resize(width, height));
                            }
                            crossterm::event::Event::Paste(text) => {
                                let _ = self.sender.send(Event::Paste(text));
                            }
                            _ => {}
                        }
                    }
                    Err(_) => {
                        // Handle error by continuing the loop
                        continue;
                    }
                }
            }
            if last_tick.elapsed() >= self.tick_rate {
                let _ = self.sender.send(Event::Tick);
                last_tick = tokio::time::Instant::now();
            }
        }
    }
 }
 /// Helper functions for key event handling
 impl Event {
    /// Check if this is a quit command (Ctrl+C or 'q')
    pub fn is_quit(&self) -> bool {
        matches!(
            self,
            Event::Key(KeyEvent {
                code: KeyCode::Char('q'),
                modifiers: KeyModifiers::NONE,
                ..
            }) | Event::Key(KeyEvent {
                code: KeyCode::Char('c'),
                modifiers: KeyModifiers::CONTROL,
                ..
            })
        )
    }
    /// Check if this is an enter key press
    pub fn is_enter(&self) -> bool {
        matches!(
            self,
            Event::Key(KeyEvent {
                code: KeyCode::Enter,
                ..
            })
        )
    }
    /// Check if this is a tab key press
    #[allow(dead_code)]
    pub fn is_tab(&self) -> bool {
        matches!(
            self,
            Event::Key(KeyEvent {
                code: KeyCode::Tab,
                modifiers: KeyModifiers::NONE,
                ..
            })
        )
    }
    /// Check if this is a backspace
    pub fn is_backspace(&self) -> bool {
        matches!(
            self,
            Event::Key(KeyEvent {
                code: KeyCode::Backspace,
                ..
            })
        )
    }
    /// Check if this is an escape key press
    pub fn is_escape(&self) -> bool {
        matches!(
            self,
            Event::Key(KeyEvent {
                code: KeyCode::Esc,
                ..
            })
        )
    }
    /// Get the character if this is a character key event
    pub fn as_char(&self) -> Option<char> {
        match self {
            Event::Key(KeyEvent {
                code: KeyCode::Char(c),
                modifiers: KeyModifiers::NONE,
                ..
            }) => Some(*c),
            Event::Key(KeyEvent {
                code: KeyCode::Char(c),
                modifiers: KeyModifiers::SHIFT,
                ..
            }) => Some(*c),
            _ => None,
        }
    }
    /// Check if this is an up arrow key press
    pub fn is_up(&self) -> bool {
        matches!(
            self,
            Event::Key(KeyEvent {
                code: KeyCode::Up,
                ..
            })
        )
    }
    /// Check if this is a down arrow key press
    pub fn is_down(&self) -> bool {
        matches!(
            self,
            Event::Key(KeyEvent {
                code: KeyCode::Down,
                ..
            })
        )
    }
    /// Check if this is a left arrow key press
    pub fn is_left(&self) -> bool {
        matches!(
            self,
            Event::Key(KeyEvent {
                code: KeyCode::Left,
                ..
            })
        )
    }
    /// Check if this is a right arrow key press
    pub fn is_right(&self) -> bool {
        matches!(
            self,
            Event::Key(KeyEvent {
                code: KeyCode::Right,
                ..
            })
        )
    }
 }
--- a/crates/owlen-tui/src/lib.rs
+++ b/crates/owlen-tui/src/lib.rs
@@ -1,10 +0,0 @@
 pub mod chat_app;
 pub mod code_app;
 pub mod config;
 pub mod events;
 pub mod ui;
 pub use chat_app::{ChatApp, SessionEvent};
 pub use code_app::CodeApp;
 pub use events::{Event, EventHandler};
 pub use owlen_core::ui::{AppState, FocusedPanel, InputMode};
--- a/crates/owlen-tui/src/ui.rs
+++ b/crates/owlen-tui/src/ui.rs
--- a/crates/platform/config/.gitignore
+++ b/crates/platform/config/.gitignore
@@ -0,0 +1,22 @@
 /target
 ### Rust template
 # Generated by Cargo
 # will have compiled files and executables
 debug/
 target/
 # Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
 # More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
 Cargo.lock
 # These are backup files generated by rustfmt
 **/*.rs.bk
 # MSVC Windows builds of rustc generate these, which store debugging information
 *.pdb
 ### rust-analyzer template
 # Can be generated by other build systems other than cargo (ex: bazelbuild/rust_rules)
 rust-project.json
--- a/crates/platform/config/Cargo.toml
+++ b/crates/platform/config/Cargo.toml
@@ -0,0 +1,15 @@
 [package]
 name = "config-agent"
 version = "0.1.0"
 edition.workspace = true
 license.workspace = true
 rust-version.workspace = true
 [dependencies]
 serde = { version = "1", features = ["derive"] }
 directories = "5"
 figment = { version = "0.10", features = ["toml", "env"] }
 permissions = { path = "../permissions" }
 [dev-dependencies]
 tempfile = "3.23.0"
--- a/crates/platform/config/src/lib.rs
+++ b/crates/platform/config/src/lib.rs
@@ -0,0 +1,76 @@
 use directories::ProjectDirs;
 use figment::{
    Figment,
    providers::{Env, Format, Serialized, Toml},
 };
 use serde::{Deserialize, Serialize};
 use std::path::PathBuf;
 use permissions::{Mode, PermissionManager};
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct Settings {
    #[serde(default = "default_ollama_url")]
    pub ollama_url: String,
    #[serde(default = "default_model")]
    pub model: String,
    #[serde(default = "default_mode")]
    pub mode: String, // "plan" (read-only) for now
    #[serde(default)]
    pub api_key: Option<String>, // For Ollama Cloud or other API authentication
 }
 fn default_ollama_url() -> String {
    "http://localhost:11434".into()
 }
 fn default_model() -> String {
    "qwen3:8b".into()
 }
 fn default_mode() -> String {
    "plan".into()
 }
 impl Default for Settings {
    fn default() -> Self {
        Self {
            ollama_url: default_ollama_url(),
            model: default_model(),
            mode: default_mode(),
            api_key: None,
        }
    }
 }
 impl Settings {
    /// Create a PermissionManager based on the configured mode
    pub fn create_permission_manager(&self) -> PermissionManager {
        let mode = Mode::from_str(&self.mode).unwrap_or(Mode::Plan);
        PermissionManager::new(mode)
    }
    /// Get the Mode enum from the mode string
    pub fn get_mode(&self) -> Mode {
        Mode::from_str(&self.mode).unwrap_or(Mode::Plan)
    }
 }
 pub fn load_settings(project_root: Option<&str>) -> Result<Settings, figment::Error> {
    let mut fig = Figment::from(Serialized::defaults(Settings::default()));
    // User file: ~/.config/owlen/config.toml
    if let Some(pd) = ProjectDirs::from("dev", "owlibou", "owlen") {
        let user = pd.config_dir().join("config.toml");
        fig = fig.merge(Toml::file(user));
    }
    // Project file: <root>/.owlen.toml
    if let Some(root) = project_root {
        fig = fig.merge(Toml::file(PathBuf::from(root).join(".owlen.toml")));
    }
    // Environment variables have highest precedence
    fig = fig.merge(Env::prefixed("OWLEN_").split("__"));
    // Support OLLAMA_API_KEY, OLLAMA_MODEL, etc. (without nesting)
    fig = fig.merge(Env::prefixed("OLLAMA_"));
    fig.extract()
 }
--- a/crates/platform/config/tests/precedence.rs
+++ b/crates/platform/config/tests/precedence.rs
@@ -0,0 +1,48 @@
 use config_agent::{load_settings, Settings};
 use permissions::{Mode, PermissionDecision, Tool};
 use std::{env, fs};
 #[test]
 fn precedence_env_overrides_files() {
    let tmp = tempfile::tempdir().unwrap();
    let project_file = tmp.path().join(".owlen.toml");
    fs::write(&project_file, r#"model="local-model""#).unwrap();
    unsafe { env::set_var("OWLEN_MODEL", "env-model"); }
    let s = load_settings(Some(tmp.path().to_str().unwrap())).unwrap();
    assert_eq!(s.model, "env-model");
 }
 #[test]
 fn default_mode_is_plan() {
    let s = Settings::default();
    assert_eq!(s.mode, "plan");
 }
 #[test]
 fn settings_create_permission_manager_with_plan_mode() {
    let s = Settings::default();
    let mgr = s.create_permission_manager();
    // Plan mode should allow read operations
    assert_eq!(mgr.check(Tool::Read, None), PermissionDecision::Allow);
    // Plan mode should ask for write operations
    assert_eq!(mgr.check(Tool::Write, None), PermissionDecision::Ask);
 }
 #[test]
 fn settings_parse_mode_from_config() {
    let tmp = tempfile::tempdir().unwrap();
    let project_file = tmp.path().join(".owlen.toml");
    fs::write(&project_file, r#"mode="code""#).unwrap();
    let s = load_settings(Some(tmp.path().to_str().unwrap())).unwrap();
    assert_eq!(s.mode, "code");
    assert_eq!(s.get_mode(), Mode::Code);
    let mgr = s.create_permission_manager();
    // Code mode should allow everything
    assert_eq!(mgr.check(Tool::Write, None), PermissionDecision::Allow);
    assert_eq!(mgr.check(Tool::Bash, None), PermissionDecision::Allow);
 }
--- a/crates/platform/hooks/Cargo.toml
+++ b/crates/platform/hooks/Cargo.toml
@@ -0,0 +1,16 @@
 [package]
 name = "hooks"
 version = "0.1.0"
 edition.workspace = true
 license.workspace = true
 rust-version.workspace = true
 [dependencies]
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 tokio = { version = "1.39", features = ["process", "time", "io-util"] }
 color-eyre = "0.6"
 [dev-dependencies]
 tempfile = "3.23.0"
 tokio = { version = "1.39", features = ["macros", "rt-multi-thread"] }
--- a/crates/platform/hooks/src/lib.rs
+++ b/crates/platform/hooks/src/lib.rs
@@ -0,0 +1,171 @@
 use color_eyre::eyre::{Result, eyre};
 use serde::{Deserialize, Serialize};
 use serde_json::Value;
 use std::path::PathBuf;
 use std::process::Stdio;
 use tokio::io::AsyncWriteExt;
 use tokio::process::Command;
 use tokio::time::timeout;
 use std::time::Duration;
 #[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
 #[serde(tag = "event", rename_all = "camelCase")]
 pub enum HookEvent {
    #[serde(rename_all = "camelCase")]
    PreToolUse {
        tool: String,
        args: Value,
    },
    #[serde(rename_all = "camelCase")]
    PostToolUse {
        tool: String,
        result: Value,
    },
    #[serde(rename_all = "camelCase")]
    SessionStart {
        session_id: String,
    },
    #[serde(rename_all = "camelCase")]
    SessionEnd {
        session_id: String,
    },
    #[serde(rename_all = "camelCase")]
    UserPromptSubmit {
        prompt: String,
    },
    PreCompact,
 }
 impl HookEvent {
    /// Get the hook name for this event (used to find the hook script)
    pub fn hook_name(&self) -> &str {
        match self {
            HookEvent::PreToolUse { .. } => "PreToolUse",
            HookEvent::PostToolUse { .. } => "PostToolUse",
            HookEvent::SessionStart { .. } => "SessionStart",
            HookEvent::SessionEnd { .. } => "SessionEnd",
            HookEvent::UserPromptSubmit { .. } => "UserPromptSubmit",
            HookEvent::PreCompact => "PreCompact",
        }
    }
 }
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub enum HookResult {
    Allow,
    Deny,
 }
 pub struct HookManager {
    project_root: PathBuf,
 }
 impl HookManager {
    pub fn new(project_root: &str) -> Self {
        Self {
            project_root: PathBuf::from(project_root),
        }
    }
    /// Execute a hook for the given event
    ///
    /// Returns:
    /// - Ok(HookResult::Allow) if hook succeeds or doesn't exist (exit code 0 or no hook)
    /// - Ok(HookResult::Deny) if hook denies (exit code 2)
    /// - Err if hook fails (other exit codes) or times out
    pub async fn execute(&self, event: &HookEvent, timeout_ms: Option<u64>) -> Result<HookResult> {
        let hook_path = self.get_hook_path(event);
        // If hook doesn't exist, allow by default
        if !hook_path.exists() {
            return Ok(HookResult::Allow);
        }
        // Serialize event to JSON
        let input_json = serde_json::to_string(event)?;
        // Spawn the hook process
        let mut child = Command::new(&hook_path)
            .stdin(Stdio::piped())
            .stdout(Stdio::piped())
            .stderr(Stdio::piped())
            .current_dir(&self.project_root)
            .spawn()?;
        // Write JSON input to stdin
        if let Some(mut stdin) = child.stdin.take() {
            stdin.write_all(input_json.as_bytes()).await?;
            stdin.flush().await?;
            drop(stdin); // Close stdin
        }
        // Wait for process with timeout
        let result = if let Some(ms) = timeout_ms {
            timeout(Duration::from_millis(ms), child.wait_with_output()).await
        } else {
            Ok(child.wait_with_output().await)
        };
        match result {
            Ok(Ok(output)) => {
                // Check exit code
                match output.status.code() {
                    Some(0) => Ok(HookResult::Allow),
                    Some(2) => Ok(HookResult::Deny),
                    Some(code) => Err(eyre!(
                        "Hook {} failed with exit code {}: {}",
                        event.hook_name(),
                        code,
                        String::from_utf8_lossy(&output.stderr)
                    )),
                    None => Err(eyre!("Hook {} terminated by signal", event.hook_name())),
                }
            }
            Ok(Err(e)) => Err(eyre!("Failed to execute hook {}: {}", event.hook_name(), e)),
            Err(_) => Err(eyre!("Hook {} timed out", event.hook_name())),
        }
    }
    fn get_hook_path(&self, event: &HookEvent) -> PathBuf {
        self.project_root
            .join(".owlen")
            .join("hooks")
            .join(event.hook_name())
    }
 }
 #[cfg(test)]
 mod tests {
    use super::*;
    #[test]
    fn hook_event_serializes_correctly() {
        let event = HookEvent::PreToolUse {
            tool: "Read".to_string(),
            args: serde_json::json!({"path": "/tmp/test.txt"}),
        };
        let json = serde_json::to_string(&event).unwrap();
        assert!(json.contains("\"event\":\"preToolUse\""));
        assert!(json.contains("\"tool\":\"Read\""));
    }
    #[test]
    fn hook_event_names() {
        assert_eq!(
            HookEvent::PreToolUse {
                tool: "Read".to_string(),
                args: serde_json::json!({}),
            }
            .hook_name(),
            "PreToolUse"
        );
        assert_eq!(
            HookEvent::SessionStart {
                session_id: "123".to_string(),
            }
            .hook_name(),
            "SessionStart"
        );
    }
 }
--- a/crates/platform/hooks/tests/hooks.rs
+++ b/crates/platform/hooks/tests/hooks.rs
@@ -0,0 +1,160 @@
 use hooks::{HookEvent, HookManager, HookResult};
 use std::fs;
 use tempfile::tempdir;
 #[tokio::test]
 async fn pretooluse_can_deny_call() {
    let dir = tempdir().unwrap();
    let hooks_dir = dir.path().join(".owlen/hooks");
    fs::create_dir_all(&hooks_dir).unwrap();
    // Create a PreToolUse hook that denies Write operations
    let hook_script = r#"#!/bin/bash
 INPUT=$(cat)
 TOOL=$(echo "$INPUT" | grep -o '"tool":"[^"]*"' | cut -d'"' -f4)
 if [ "$TOOL" = "Write" ]; then
    exit 2  # Deny
 fi
 exit 0  # Allow
 "#;
    let hook_path = hooks_dir.join("PreToolUse");
    fs::write(&hook_path, hook_script).unwrap();
    fs::set_permissions(&hook_path, std::os::unix::fs::PermissionsExt::from_mode(0o755)).unwrap();
    let manager = HookManager::new(dir.path().to_str().unwrap());
    // Test Write tool (should be denied)
    let write_event = HookEvent::PreToolUse {
        tool: "Write".to_string(),
        args: serde_json::json!({"path": "/tmp/test.txt", "content": "hello"}),
    };
    let result = manager.execute(&write_event, Some(5000)).await.unwrap();
    assert_eq!(result, HookResult::Deny);
    // Test Read tool (should be allowed)
    let read_event = HookEvent::PreToolUse {
        tool: "Read".to_string(),
        args: serde_json::json!({"path": "/tmp/test.txt"}),
    };
    let result = manager.execute(&read_event, Some(5000)).await.unwrap();
    assert_eq!(result, HookResult::Allow);
 }
 #[tokio::test]
 async fn posttooluse_runs_parallel() {
    let dir = tempdir().unwrap();
    let hooks_dir = dir.path().join(".owlen/hooks");
    fs::create_dir_all(&hooks_dir).unwrap();
    let output_file = dir.path().join("hook_output.txt");
    // Create a PostToolUse hook that writes to a file
    let hook_script = format!(
        r#"#!/bin/bash
 INPUT=$(cat)
 echo "Hook executed: $INPUT" >> {}
 exit 0
 "#,
        output_file.display()
    );
    let hook_path = hooks_dir.join("PostToolUse");
    fs::write(&hook_path, hook_script).unwrap();
    fs::set_permissions(&hook_path, std::os::unix::fs::PermissionsExt::from_mode(0o755)).unwrap();
    let manager = HookManager::new(dir.path().to_str().unwrap());
    // Execute hook
    let event = HookEvent::PostToolUse {
        tool: "Read".to_string(),
        result: serde_json::json!({"success": true}),
    };
    let result = manager.execute(&event, Some(5000)).await.unwrap();
    assert_eq!(result, HookResult::Allow);
    // Verify hook ran
    let output = fs::read_to_string(&output_file).unwrap();
    assert!(output.contains("Hook executed"));
 }
 #[tokio::test]
 async fn sessionstart_persists_env() {
    let dir = tempdir().unwrap();
    let hooks_dir = dir.path().join(".owlen/hooks");
    fs::create_dir_all(&hooks_dir).unwrap();
    let env_file = dir.path().join(".owlen/session.env");
    // Create a SessionStart hook that writes env vars to a file
    let hook_script = format!(
        r#"#!/bin/bash
 cat > {} <<EOF
 MY_VAR=hello
 ANOTHER_VAR=world
 EOF
 exit 0
 "#,
        env_file.display()
    );
    let hook_path = hooks_dir.join("SessionStart");
    fs::write(&hook_path, hook_script).unwrap();
    fs::set_permissions(&hook_path, std::os::unix::fs::PermissionsExt::from_mode(0o755)).unwrap();
    let manager = HookManager::new(dir.path().to_str().unwrap());
    // Execute SessionStart hook
    let event = HookEvent::SessionStart {
        session_id: "test-123".to_string(),
    };
    let result = manager.execute(&event, Some(5000)).await.unwrap();
    assert_eq!(result, HookResult::Allow);
    // Verify env file was created
    assert!(env_file.exists());
    let content = fs::read_to_string(&env_file).unwrap();
    assert!(content.contains("MY_VAR=hello"));
    assert!(content.contains("ANOTHER_VAR=world"));
 }
 #[tokio::test]
 async fn hook_timeout_works() {
    let dir = tempdir().unwrap();
    let hooks_dir = dir.path().join(".owlen/hooks");
    fs::create_dir_all(&hooks_dir).unwrap();
    // Create a hook that sleeps longer than the timeout
    let hook_script = r#"#!/bin/bash
 sleep 10
 exit 0
 "#;
    let hook_path = hooks_dir.join("PreToolUse");
    fs::write(&hook_path, hook_script).unwrap();
    fs::set_permissions(&hook_path, std::os::unix::fs::PermissionsExt::from_mode(0o755)).unwrap();
    let manager = HookManager::new(dir.path().to_str().unwrap());
    let event = HookEvent::PreToolUse {
        tool: "Read".to_string(),
        args: serde_json::json!({"path": "/tmp/test.txt"}),
    };
    // Should timeout after 1000ms
    let result = manager.execute(&event, Some(1000)).await;
    assert!(result.is_err());
    let err_msg = result.unwrap_err().to_string();
    assert!(err_msg.contains("timeout") || err_msg.contains("timed out"));
 }
 #[tokio::test]
 async fn hook_not_found_is_ok() {
    let dir = tempdir().unwrap();
    let manager = HookManager::new(dir.path().to_str().unwrap());
    // No hooks directory exists, should just return Allow
    let event = HookEvent::PreToolUse {
        tool: "Read".to_string(),
        args: serde_json::json!({"path": "/tmp/test.txt"}),
    };
    let result = manager.execute(&event, Some(5000)).await.unwrap();
    assert_eq!(result, HookResult::Allow);
 }
--- a/crates/platform/permissions/Cargo.toml
+++ b/crates/platform/permissions/Cargo.toml
@@ -0,0 +1,10 @@
 [package]
 name = "permissions"
 version = "0.1.0"
 edition.workspace = true
 license.workspace = true
 rust-version.workspace = true
 [dependencies]
 serde = { version = "1", features = ["derive"] }
 thiserror = "1"
--- a/crates/platform/permissions/src/lib.rs
+++ b/crates/platform/permissions/src/lib.rs
@@ -0,0 +1,240 @@
 use serde::{Deserialize, Serialize};
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize)]
 pub enum Tool {
    Read,
    Write,
    Edit,
    Bash,
    Grep,
    Glob,
    WebFetch,
    WebSearch,
    NotebookRead,
    NotebookEdit,
    SlashCommand,
    Task,
    TodoWrite,
    Mcp,
 }
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
 pub enum Action {
    Allow,
    Ask,
    Deny,
 }
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
 pub enum Mode {
    Plan,        // Read-only: Read/Grep/Glob allowed, others Ask
    AcceptEdits, // Auto-allow Edit/Write, Bash still Ask
    Code,        // Full access (all allowed)
 }
 impl Mode {
    pub fn from_str(s: &str) -> Option<Self> {
        match s.to_lowercase().as_str() {
            "plan" => Some(Mode::Plan),
            "acceptedits" | "accept_edits" => Some(Mode::AcceptEdits),
            "code" => Some(Mode::Code),
            _ => None,
        }
    }
 }
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub enum PermissionDecision {
    Allow,
    Ask,
    Deny,
 }
 #[derive(Debug, Clone)]
 pub struct PermissionRule {
    pub tool: Tool,
    pub pattern: Option<String>,
    pub action: Action,
 }
 impl PermissionRule {
    fn matches(&self, tool: Tool, context: Option<&str>) -> bool {
        if self.tool != tool {
            return false;
        }
        match (&self.pattern, context) {
            (None, _) => true, // No pattern means match all
            (Some(_), None) => false, // Pattern specified but no context
            (Some(pattern), Some(ctx)) => {
                // Support prefix matching with wildcard
                if pattern.ends_with('*') {
                    let prefix = pattern.trim_end_matches('*');
                    ctx.starts_with(prefix)
                } else {
                    // Exact match
                    pattern == ctx
                }
            }
        }
    }
 }
 #[derive(Debug)]
 pub struct PermissionManager {
    mode: Mode,
    rules: Vec<PermissionRule>,
 }
 impl PermissionManager {
    pub fn new(mode: Mode) -> Self {
        Self {
            mode,
            rules: Vec::new(),
        }
    }
    pub fn add_rule(&mut self, tool: Tool, pattern: Option<String>, action: Action) {
        self.rules.push(PermissionRule {
            tool,
            pattern,
            action,
        });
    }
    pub fn check(&self, tool: Tool, context: Option<&str>) -> PermissionDecision {
        // Check explicit rules first (most specific to least specific)
        // Deny rules take precedence
        for rule in &self.rules {
            if rule.matches(tool, context) {
                return match rule.action {
                    Action::Allow => PermissionDecision::Allow,
                    Action::Ask => PermissionDecision::Ask,
                    Action::Deny => PermissionDecision::Deny,
                };
            }
        }
        // Fall back to mode-based defaults
        self.check_mode_default(tool)
    }
    fn check_mode_default(&self, tool: Tool) -> PermissionDecision {
        match self.mode {
            Mode::Plan => match tool {
                // Read-only tools are allowed in plan mode
                Tool::Read | Tool::Grep | Tool::Glob | Tool::NotebookRead => {
                    PermissionDecision::Allow
                }
                // Everything else requires asking
                _ => PermissionDecision::Ask,
            },
            Mode::AcceptEdits => match tool {
                // Read operations allowed
                Tool::Read | Tool::Grep | Tool::Glob | Tool::NotebookRead => {
                    PermissionDecision::Allow
                }
                // Edit/Write operations allowed
                Tool::Edit | Tool::Write | Tool::NotebookEdit => PermissionDecision::Allow,
                // Bash and other dangerous operations still require asking
                Tool::Bash | Tool::WebFetch | Tool::WebSearch | Tool::Mcp => PermissionDecision::Ask,
                // Utility tools allowed
                Tool::TodoWrite | Tool::SlashCommand | Tool::Task => PermissionDecision::Allow,
            },
            Mode::Code => {
                // Everything allowed in code mode
                PermissionDecision::Allow
            }
        }
    }
    pub fn set_mode(&mut self, mode: Mode) {
        self.mode = mode;
    }
    pub fn mode(&self) -> Mode {
        self.mode
    }
 }
 #[cfg(test)]
 mod tests {
    use super::*;
    #[test]
    fn pattern_exact_match() {
        let rule = PermissionRule {
            tool: Tool::Bash,
            pattern: Some("npm test".to_string()),
            action: Action::Allow,
        };
        assert!(rule.matches(Tool::Bash, Some("npm test")));
        assert!(!rule.matches(Tool::Bash, Some("npm install")));
        assert!(!rule.matches(Tool::Read, Some("npm test")));
    }
    #[test]
    fn pattern_prefix_match() {
        let rule = PermissionRule {
            tool: Tool::Bash,
            pattern: Some("npm test:*".to_string()),
            action: Action::Allow,
        };
        assert!(rule.matches(Tool::Bash, Some("npm test:unit")));
        assert!(rule.matches(Tool::Bash, Some("npm test:integration")));
        assert!(!rule.matches(Tool::Bash, Some("npm install")));
    }
    #[test]
    fn pattern_no_context() {
        let rule = PermissionRule {
            tool: Tool::Bash,
            pattern: Some("npm test".to_string()),
            action: Action::Allow,
        };
        // Pattern specified but no context provided
        assert!(!rule.matches(Tool::Bash, None));
    }
    #[test]
    fn no_pattern_matches_all() {
        let rule = PermissionRule {
            tool: Tool::Read,
            pattern: None,
            action: Action::Allow,
        };
        assert!(rule.matches(Tool::Read, Some("any context")));
        assert!(rule.matches(Tool::Read, None));
    }
    #[test]
    fn mcp_server_pattern_matching() {
        // Allow all tools from a specific server
        let rule = PermissionRule {
            tool: Tool::Mcp,
            pattern: Some("filesystem__*".to_string()),
            action: Action::Allow,
        };
        assert!(rule.matches(Tool::Mcp, Some("filesystem__read_file")));
        assert!(rule.matches(Tool::Mcp, Some("filesystem__write_file")));
        assert!(!rule.matches(Tool::Mcp, Some("database__query")));
    }
    #[test]
    fn mcp_exact_tool_matching() {
        // Allow only a specific tool from a server
        let rule = PermissionRule {
            tool: Tool::Mcp,
            pattern: Some("filesystem__read_file".to_string()),
            action: Action::Allow,
        };
        assert!(rule.matches(Tool::Mcp, Some("filesystem__read_file")));
        assert!(!rule.matches(Tool::Mcp, Some("filesystem__write_file")));
    }
 }
--- a/crates/platform/permissions/tests/plan_mode.rs
+++ b/crates/platform/permissions/tests/plan_mode.rs
@@ -0,0 +1,85 @@
 use permissions::{PermissionManager, Mode, Tool, PermissionDecision};
 #[test]
 fn plan_mode_blocks_write_bash_by_default() {
    let mgr = PermissionManager::new(Mode::Plan);
    // Plan mode should allow read operations
    assert_eq!(mgr.check(Tool::Read, None), PermissionDecision::Allow);
    assert_eq!(mgr.check(Tool::Grep, None), PermissionDecision::Allow);
    assert_eq!(mgr.check(Tool::Glob, None), PermissionDecision::Allow);
    // Plan mode should ask for write operations
    assert_eq!(mgr.check(Tool::Write, None), PermissionDecision::Ask);
    assert_eq!(mgr.check(Tool::Edit, None), PermissionDecision::Ask);
    // Plan mode should ask for Bash
    assert_eq!(mgr.check(Tool::Bash, None), PermissionDecision::Ask);
 }
 #[test]
 fn accept_edits_mode_allows_edit_write() {
    let mgr = PermissionManager::new(Mode::AcceptEdits);
    // AcceptEdits mode should allow read operations
    assert_eq!(mgr.check(Tool::Read, None), PermissionDecision::Allow);
    // AcceptEdits mode should allow edit/write
    assert_eq!(mgr.check(Tool::Edit, None), PermissionDecision::Allow);
    assert_eq!(mgr.check(Tool::Write, None), PermissionDecision::Allow);
    // But still ask for Bash
    assert_eq!(mgr.check(Tool::Bash, None), PermissionDecision::Ask);
 }
 #[test]
 fn code_mode_allows_everything() {
    let mgr = PermissionManager::new(Mode::Code);
    assert_eq!(mgr.check(Tool::Read, None), PermissionDecision::Allow);
    assert_eq!(mgr.check(Tool::Write, None), PermissionDecision::Allow);
    assert_eq!(mgr.check(Tool::Edit, None), PermissionDecision::Allow);
    assert_eq!(mgr.check(Tool::Bash, None), PermissionDecision::Allow);
 }
 #[test]
 fn bash_pattern_matching() {
    let mut mgr = PermissionManager::new(Mode::Plan);
    // Add a rule to allow "npm test"
    mgr.add_rule(Tool::Bash, Some("npm test".to_string()), permissions::Action::Allow);
    // Should allow the exact command
    assert_eq!(mgr.check(Tool::Bash, Some("npm test")), PermissionDecision::Allow);
    // Should still ask for other commands
    assert_eq!(mgr.check(Tool::Bash, Some("rm -rf /")), PermissionDecision::Ask);
 }
 #[test]
 fn bash_prefix_matching() {
    let mut mgr = PermissionManager::new(Mode::Plan);
    // Add a rule to allow "npm test:*" (prefix match)
    mgr.add_rule(Tool::Bash, Some("npm test:*".to_string()), permissions::Action::Allow);
    // Should allow commands matching the prefix
    assert_eq!(mgr.check(Tool::Bash, Some("npm test:unit")), PermissionDecision::Allow);
    assert_eq!(mgr.check(Tool::Bash, Some("npm test:integration")), PermissionDecision::Allow);
    // Should not allow non-matching commands
    assert_eq!(mgr.check(Tool::Bash, Some("npm install")), PermissionDecision::Ask);
 }
 #[test]
 fn deny_rules_take_precedence() {
    let mut mgr = PermissionManager::new(Mode::Code);
    // Even in Code mode, we can deny specific operations
    mgr.add_rule(Tool::Bash, Some("rm -rf*".to_string()), permissions::Action::Deny);
    assert_eq!(mgr.check(Tool::Bash, Some("rm -rf /")), PermissionDecision::Deny);
    // But other commands are still allowed
    assert_eq!(mgr.check(Tool::Bash, Some("ls")), PermissionDecision::Allow);
 }
--- a/crates/tools/bash/Cargo.toml
+++ b/crates/tools/bash/Cargo.toml
@@ -0,0 +1,14 @@
 [package]
 name = "tools-bash"
 version = "0.1.0"
 edition.workspace = true
 license.workspace = true
 rust-version.workspace = true
 [dependencies]
 tokio = { version = "1.39", features = ["process", "io-util", "time", "sync"] }
 color-eyre = "0.6"
 tempfile = "3.23.0"
 [dev-dependencies]
 tokio = { version = "1.39", features = ["macros", "rt-multi-thread"] }
--- a/crates/tools/bash/src/lib.rs
+++ b/crates/tools/bash/src/lib.rs
@@ -0,0 +1,170 @@
 use color_eyre::eyre::{Result, eyre};
 use std::process::Stdio;
 use tokio::io::{AsyncBufReadExt, AsyncWriteExt, BufReader};
 use tokio::process::{Child, Command};
 use tokio::sync::Mutex;
 use tokio::time::{timeout, Duration};
 const MAX_OUTPUT_LINES: usize = 2000;
 const DEFAULT_TIMEOUT_MS: u64 = 120000; // 2 minutes
 const COMMAND_DELIMITER: &str = "___OWLEN_CMD_END___";
 #[derive(Debug, Clone)]
 pub struct CommandOutput {
    pub stdout: String,
    pub stderr: String,
    pub exit_code: i32,
    pub success: bool,
 }
 pub struct BashSession {
    child: Mutex<Child>,
 }
 impl BashSession {
    /// Create a new persistent bash session
    pub async fn new() -> Result<Self> {
        let child = Command::new("bash")
            .arg("--norc")
            .arg("--noprofile")
            .stdin(Stdio::piped())
            .stdout(Stdio::piped())
            .stderr(Stdio::piped())
            .kill_on_drop(true)
            .spawn()?;
        // Verify the process started
        if child.stdin.is_none() || child.stdout.is_none() || child.stderr.is_none() {
            return Err(eyre!("Failed to capture bash process stdio"));
        }
        Ok(Self {
            child: Mutex::new(child),
        })
    }
    /// Execute a command in the persistent bash session
    ///
    /// # Arguments
    /// * `command` - The bash command to execute
    /// * `timeout_ms` - Optional timeout in milliseconds (default: 2 minutes)
    pub async fn execute(&mut self, command: &str, timeout_ms: Option<u64>) -> Result<CommandOutput> {
        let timeout_duration = Duration::from_millis(timeout_ms.unwrap_or(DEFAULT_TIMEOUT_MS));
        let result = timeout(timeout_duration, self.execute_internal(command)).await;
        match result {
            Ok(output) => output,
            Err(_) => Err(eyre!("Command timed out after {}ms", timeout_duration.as_millis())),
        }
    }
    async fn execute_internal(&mut self, command: &str) -> Result<CommandOutput> {
        let mut child = self.child.lock().await;
        // Take ownership of stdio handles
        let mut stdin = child.stdin.take().ok_or_else(|| eyre!("No stdin"))?;
        let stdout = child.stdout.take().ok_or_else(|| eyre!("No stdout"))?;
        let stderr = child.stderr.take().ok_or_else(|| eyre!("No stderr"))?;
        // Write command with delimiter and exit code capture
        let full_command = format!(
            "{}\necho $? > /tmp/owlen_exit_code_$$.tmp\necho '{}'\n",
            command, COMMAND_DELIMITER
        );
        stdin.write_all(full_command.as_bytes()).await?;
        stdin.flush().await?;
        // Read stdout until delimiter
        let mut stdout_reader = BufReader::new(stdout);
        let mut stdout_lines = Vec::new();
        let mut line = String::new();
        loop {
            line.clear();
            let n = stdout_reader.read_line(&mut line).await?;
            if n == 0 {
                return Err(eyre!("Bash process terminated unexpectedly"));
            }
            if line.trim() == COMMAND_DELIMITER {
                break;
            }
            stdout_lines.push(line.clone());
            // Truncate if too many lines
            if stdout_lines.len() > MAX_OUTPUT_LINES {
                stdout_lines.push("<<<...output truncated...>>>\n".to_string());
                break;
            }
        }
        // Read stderr (non-blocking, best effort)
        let mut stderr_reader = BufReader::new(stderr);
        let mut stderr_lines = Vec::new();
        let mut stderr_line = String::new();
        // Try to read stderr without blocking indefinitely
        while let Ok(result) = timeout(Duration::from_millis(100), stderr_reader.read_line(&mut stderr_line)).await {
            match result {
                Ok(n) if n > 0 => {
                    stderr_lines.push(stderr_line.clone());
                    stderr_line.clear();
                    if stderr_lines.len() > MAX_OUTPUT_LINES {
                        stderr_lines.push("<<<...stderr truncated...>>>\n".to_string());
                        break;
                    }
                }
                _ => break,
            }
        }
        // Read exit code
        let exit_code_cmd = "cat /tmp/owlen_exit_code_$$.tmp 2>/dev/null; rm -f /tmp/owlen_exit_code_$$.tmp\n";
        stdin.write_all(exit_code_cmd.as_bytes()).await?;
        stdin.flush().await?;
        let mut exit_line = String::new();
        stdout_reader.read_line(&mut exit_line).await?;
        let exit_code: i32 = exit_line.trim().parse().unwrap_or(0);
        // Restore stdio handles
        child.stdin = Some(stdin);
        child.stdout = Some(stdout_reader.into_inner());
        child.stderr = Some(stderr_reader.into_inner());
        Ok(CommandOutput {
            stdout: stdout_lines.join(""),
            stderr: stderr_lines.join(""),
            exit_code,
            success: exit_code == 0,
        })
    }
    /// Close the bash session
    pub async fn close(self) -> Result<()> {
        let mut child = self.child.into_inner();
        if let Some(mut stdin) = child.stdin.take() {
            let _ = stdin.write_all(b"exit\n").await;
            let _ = stdin.flush().await;
        }
        let _ = child.wait().await?;
        Ok(())
    }
 }
 #[cfg(test)]
 mod tests {
    use super::*;
    #[tokio::test]
    async fn can_create_session() {
        let session = BashSession::new().await;
        assert!(session.is_ok());
    }
 }
--- a/crates/tools/bash/tests/bash_session.rs
+++ b/crates/tools/bash/tests/bash_session.rs
@@ -0,0 +1,107 @@
 use tools_bash::BashSession;
 #[tokio::test]
 async fn bash_persists_env_between_calls() {
    let mut session = BashSession::new().await.unwrap();
    // Set an environment variable
    let output1 = session.execute("export TEST_VAR=hello", None).await.unwrap();
    assert!(output1.success);
    // Verify it persists in next command
    let output2 = session.execute("echo $TEST_VAR", None).await.unwrap();
    assert!(output2.success);
    assert!(output2.stdout.contains("hello"));
    session.close().await.unwrap();
 }
 #[tokio::test]
 async fn bash_persists_cwd_between_calls() {
    let mut session = BashSession::new().await.unwrap();
    // Change to /tmp
    let output1 = session.execute("cd /tmp", None).await.unwrap();
    assert!(output1.success);
    // Verify cwd persists
    let output2 = session.execute("pwd", None).await.unwrap();
    assert!(output2.success);
    assert!(output2.stdout.trim().ends_with("/tmp"));
    session.close().await.unwrap();
 }
 #[tokio::test]
 async fn bash_command_timeout() {
    let mut session = BashSession::new().await.unwrap();
    // Command that sleeps for 5 seconds, but with 1 second timeout
    let result = session.execute("sleep 5", Some(1000)).await;
    assert!(result.is_err());
    let err_msg = result.unwrap_err().to_string();
    assert!(err_msg.contains("timeout") || err_msg.contains("timed out"));
    session.close().await.unwrap();
 }
 #[tokio::test]
 async fn bash_output_truncation() {
    let mut session = BashSession::new().await.unwrap();
    // Generate a lot of output
    let output = session
        .execute("for i in {1..100}; do echo 'Line '$i; done", None)
        .await
        .unwrap();
    assert!(output.success);
    // Should have output but might be truncated
    assert!(!output.stdout.is_empty());
    session.close().await.unwrap();
 }
 #[tokio::test]
 async fn bash_command_failure_returns_error_code() {
    let mut session = BashSession::new().await.unwrap();
    let output = session.execute("false", None).await.unwrap();
    assert!(!output.success);
    assert_eq!(output.exit_code, 1);
    session.close().await.unwrap();
 }
 #[tokio::test]
 async fn bash_stderr_captured() {
    let mut session = BashSession::new().await.unwrap();
    let output = session
        .execute("echo 'error message' >&2", None)
        .await
        .unwrap();
    assert!(output.success);
    assert!(output.stderr.contains("error message"));
    session.close().await.unwrap();
 }
 #[tokio::test]
 async fn bash_multiple_commands_in_sequence() {
    let mut session = BashSession::new().await.unwrap();
    // Set a variable
    session.execute("X=1", None).await.unwrap();
    // Increment it
    session.execute("X=$((X + 1))", None).await.unwrap();
    // Verify final value
    let output = session.execute("echo $X", None).await.unwrap();
    assert!(output.stdout.contains("2"));
    session.close().await.unwrap();
 }
--- a/crates/tools/fs/Cargo.toml
+++ b/crates/tools/fs/Cargo.toml
@@ -0,0 +1,18 @@
 [package]
 name = "tools-fs"
 version = "0.1.0"
 edition.workspace = true
 license.workspace = true
 rust-version.workspace = true
 [dependencies]
 ignore = "0.4"
 walkdir = "2.5"
 globset = "0.4"
 grep-regex = "0.1"
 grep-searcher = "0.1"
 color-eyre = "0.6"
 similar = "2.7"
 [dev-dependencies]
 tempfile = "3.23.0"
--- a/crates/tools/fs/src/lib.rs
+++ b/crates/tools/fs/src/lib.rs
@@ -0,0 +1,130 @@
 use color_eyre::eyre::{Result, eyre};
 use ignore::WalkBuilder;
 use grep_regex::RegexMatcher;
 use grep_searcher::{sinks::UTF8, SearcherBuilder};
 use globset::Glob;
 use std::path::Path;
 pub fn read_file(path: &str) -> Result<String> {
    Ok(std::fs::read_to_string(path)?)
 }
 pub fn write_file(path: &str, content: &str) -> Result<()> {
    // Create parent directories if they don't exist
    if let Some(parent) = Path::new(path).parent() {
        std::fs::create_dir_all(parent)?;
    }
    std::fs::write(path, content)?;
    Ok(())
 }
 pub fn edit_file(path: &str, old_string: &str, new_string: &str) -> Result<()> {
    // Read the current file content
    let content = std::fs::read_to_string(path)?;
    // Find all occurrences of old_string
    let matches: Vec<_> = content.match_indices(old_string).collect();
    match matches.len() {
        0 => Err(eyre!("String to replace not found in file: '{}'", old_string)),
        1 => {
            // Exactly one match - safe to replace
            let new_content = content.replace(old_string, new_string);
            // Create a backup before modifying
            let backup_path = format!("{}.backup", path);
            std::fs::write(&backup_path, &content)?;
            // Write the new content
            match std::fs::write(path, new_content) {
                Ok(_) => {
                    // Success - remove backup
                    let _ = std::fs::remove_file(&backup_path);
                    Ok(())
                }
                Err(e) => {
                    // Failed to write - restore from backup
                    let _ = std::fs::rename(&backup_path, path);
                    Err(e.into())
                }
            }
        }
        n => Err(eyre!(
            "Ambiguous replacement: found {} occurrences of '{}' in file. Please make the old_string unique.",
            n,
            old_string
        )),
    }
 }
 pub fn glob_list(pattern: &str) -> Result<Vec<String>> {
    let glob = Glob::new(pattern)?.compile_matcher();
    // Extract the literal prefix to determine the root directory
    // Find the position of the first glob metacharacter
    let first_glob = pattern
        .find(|c| matches!(c, '*' | '?' | '[' | '{'))
        .unwrap_or(pattern.len());
    // Find the last directory separator before the first glob metacharacter
    let root = if first_glob > 0 {
        let prefix = &pattern[..first_glob];
        prefix.rfind('/').map(|pos| &prefix[..pos]).unwrap_or(".")
    } else {
        "."
    };
    let mut out = Vec::new();
    for result in WalkBuilder::new(root)
        .standard_filters(true)
        .git_ignore(true)
        .git_global(false)
        .git_exclude(false)
        .require_git(false)
        .build()
    {
        let entity = result?;
        if entity.file_type().map(|filetype| filetype.is_file()).unwrap_or(false) {
            if let Some(path) = entity.path().to_str() {
                // Match against the glob pattern
                if glob.is_match(path) {
                    out.push(path.to_string());
                }
            }
        }
    }
    Ok(out)
 }
 pub fn grep(root: &str, pattern: &str) -> Result<Vec<(String, usize, String)>> {
    let matcher = RegexMatcher::new_line_matcher(pattern)?;
    let mut searcher = SearcherBuilder::new().line_number(true).build();
    let mut results = Vec::new();
    for result in WalkBuilder::new(root)
        .standard_filters(true)
        .git_ignore(true)
        .git_global(false)
        .git_exclude(false)
        .require_git(false)
        .build()
    {
        let entity = result?;
        if !entity.file_type().map(|filetype| filetype.is_file()).unwrap_or(false) { continue; }
        let path = entity.path().to_path_buf();
        let mut line_hits: Vec<(usize, String)> = Vec::new();
        let sink = UTF8(|line_number, line| {
            line_hits.push((line_number as usize, line.to_string()));
            Ok(true)
        });
        let _ = searcher.search_path(&matcher, &path, sink);
        if !line_hits.is_empty() {
            let p = path.to_string_lossy().to_string();
            for (line_number, text) in line_hits {
                results.push((p.clone(), line_number, text));
            }
        }
    }
    Ok(results)
 }
--- a/crates/tools/fs/tests/fs_tools.rs
+++ b/crates/tools/fs/tests/fs_tools.rs
@@ -0,0 +1,104 @@
 use tools_fs::{read_file, glob_list, grep, write_file, edit_file};
 use std::fs;
 use tempfile::tempdir;
 #[test]
 fn read_and_glob_respect_gitignore() {
    let dir = tempdir().unwrap();
    let root = dir.path();
    fs::write(root.join("a.txt"), "hello").unwrap();
    fs::create_dir(root.join("secret")).unwrap();
    fs::write(root.join("secret/secret.txt"), "token=123").unwrap();
    fs::write(root.join(".gitignore"), "secret/\n").unwrap();
    let pattern = format!("{}/**/*", root.display());
    let files = glob_list(&pattern).unwrap();
    assert!(files.iter().any(|p| p.ends_with("a.txt")));
    assert!(!files.iter().any(|p| p.contains("secret.txt")));
    assert_eq!(read_file(root.join("a.txt").to_str().unwrap()).unwrap(), "hello");
 }
 #[test]
 fn grep_finds_lines() {
    let dir = tempdir().unwrap();
    let root = dir.path();
    fs::write(root.join("a.rs"), "fn main() { println!(\"hello\"); }").unwrap();
    let hits = grep(root.to_str().unwrap(), "hello").unwrap();
    assert!(hits.iter().any(|(_p, _ln, text)| text.contains("hello")));
 }
 #[test]
 fn write_file_creates_new_file() {
    let dir = tempdir().unwrap();
    let file_path = dir.path().join("new.txt");
    write_file(file_path.to_str().unwrap(), "new content").unwrap();
    assert_eq!(read_file(file_path.to_str().unwrap()).unwrap(), "new content");
 }
 #[test]
 fn write_file_overwrites_existing() {
    let dir = tempdir().unwrap();
    let file_path = dir.path().join("existing.txt");
    fs::write(&file_path, "old content").unwrap();
    write_file(file_path.to_str().unwrap(), "new content").unwrap();
    assert_eq!(read_file(file_path.to_str().unwrap()).unwrap(), "new content");
 }
 #[test]
 fn edit_file_replaces_exact_match() {
    let dir = tempdir().unwrap();
    let file_path = dir.path().join("test.txt");
    let original = "line 1\nline 2\nline 3\n";
    fs::write(&file_path, original).unwrap();
    edit_file(file_path.to_str().unwrap(), "line 2", "modified line 2").unwrap();
    let result = read_file(file_path.to_str().unwrap()).unwrap();
    assert_eq!(result, "line 1\nmodified line 2\nline 3\n");
 }
 #[test]
 fn edit_file_replaces_multiline() {
    let dir = tempdir().unwrap();
    let file_path = dir.path().join("test.txt");
    let original = "line 1\nline 2\nline 3\nline 4\n";
    fs::write(&file_path, original).unwrap();
    edit_file(file_path.to_str().unwrap(), "line 2\nline 3", "new content").unwrap();
    let result = read_file(file_path.to_str().unwrap()).unwrap();
    assert_eq!(result, "line 1\nnew content\nline 4\n");
 }
 #[test]
 fn edit_file_fails_on_ambiguous_match() {
    let dir = tempdir().unwrap();
    let file_path = dir.path().join("test.txt");
    let original = "duplicate\nsome text\nduplicate\n";
    fs::write(&file_path, original).unwrap();
    let result = edit_file(file_path.to_str().unwrap(), "duplicate", "changed");
    assert!(result.is_err());
    let err_msg = result.unwrap_err().to_string();
    assert!(err_msg.contains("Ambiguous") || err_msg.contains("multiple") || err_msg.contains("occurrences"));
 }
 #[test]
 fn edit_file_fails_on_no_match() {
    let dir = tempdir().unwrap();
    let file_path = dir.path().join("test.txt");
    let original = "line 1\nline 2\n";
    fs::write(&file_path, original).unwrap();
    let result = edit_file(file_path.to_str().unwrap(), "nonexistent", "changed");
    assert!(result.is_err());
    let err_msg = result.unwrap_err().to_string();
    assert!(err_msg.contains("not found") || err_msg.contains("String to replace"));
 }
--- a/crates/tools/slash/Cargo.toml
+++ b/crates/tools/slash/Cargo.toml
@@ -0,0 +1,15 @@
 [package]
 name = "tools-slash"
 version = "0.1.0"
 edition.workspace = true
 license.workspace = true
 rust-version.workspace = true
 [dependencies]
 serde = { version = "1", features = ["derive"] }
 serde_yaml = "0.9"
 color-eyre = "0.6"
 regex = "1.12"
 [dev-dependencies]
 tempfile = "3.23.0"
--- a/crates/tools/slash/src/lib.rs
+++ b/crates/tools/slash/src/lib.rs
@@ -0,0 +1,169 @@
 use color_eyre::eyre::{Result, eyre};
 use regex::Regex;
 use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct SlashCommandMetadata {
    #[serde(default)]
    pub description: Option<String>,
    #[serde(default)]
    pub author: Option<String>,
    #[serde(default)]
    pub tags: Option<Vec<String>>,
    #[serde(default)]
    pub version: Option<String>,
    #[serde(flatten)]
    pub extra: HashMap<String, serde_yaml::Value>,
 }
 #[derive(Debug, Clone)]
 pub struct SlashCommand {
    pub description: Option<String>,
    pub author: Option<String>,
    pub tags: Option<Vec<String>>,
    pub version: Option<String>,
    pub body: String,
 }
 impl SlashCommand {
    /// Resolve file references (@path) in the command body
    pub fn resolve_file_refs(&self) -> Result<String> {
        let re = Regex::new(r"@([^\s]+)").unwrap();
        let mut result = self.body.clone();
        for cap in re.captures_iter(&self.body.clone()) {
            let full_match = &cap[0];
            let file_path = &cap[1];
            // Read the file
            match std::fs::read_to_string(file_path) {
                Ok(content) => {
                    result = result.replace(full_match, &content);
                }
                Err(e) => {
                    return Err(eyre!("Failed to read file '{}': {}", file_path, e));
                }
            }
        }
        Ok(result)
    }
 }
 /// Parse a slash command from its content
 ///
 /// # Arguments
 /// * `content` - The full content of the slash command file (with optional frontmatter)
 /// * `args` - Arguments to substitute ($ARGUMENTS, $1, $2, etc.)
 pub fn parse_slash_command(content: &str, args: &[&str]) -> Result<SlashCommand> {
    // Check if content starts with frontmatter (---)
    let (metadata, body) = if content.trim_start().starts_with("---") {
        parse_with_frontmatter(content)?
    } else {
        (None, content.to_string())
    };
    // Perform argument substitution
    let body_with_args = substitute_arguments(&body, args);
    Ok(SlashCommand {
        description: metadata.as_ref().and_then(|m| m.description.clone()),
        author: metadata.as_ref().and_then(|m| m.author.clone()),
        tags: metadata.as_ref().and_then(|m| m.tags.clone()),
        version: metadata.as_ref().and_then(|m| m.version.clone()),
        body: body_with_args,
    })
 }
 fn parse_with_frontmatter(content: &str) -> Result<(Option<SlashCommandMetadata>, String)> {
    let lines: Vec<&str> = content.lines().collect();
    // Find the end of frontmatter
    let mut end_idx = None;
    for (i, line) in lines.iter().enumerate().skip(1) {
        if line.trim() == "---" {
            end_idx = Some(i);
            break;
        }
    }
    match end_idx {
        Some(idx) => {
            // Extract frontmatter YAML
            let frontmatter_lines = &lines[1..idx];
            let frontmatter_str = frontmatter_lines.join("\n");
            // Parse YAML
            let metadata: SlashCommandMetadata = serde_yaml::from_str(&frontmatter_str)
                .map_err(|e| eyre!("Failed to parse frontmatter YAML: {}", e))?;
            // Extract body
            let body = lines[(idx + 1)..].join("\n");
            Ok((Some(metadata), body))
        }
        None => {
            // Malformed frontmatter, treat entire content as body
            Ok((None, content.to_string()))
        }
    }
 }
 fn substitute_arguments(body: &str, args: &[&str]) -> String {
    let mut result = body.to_string();
    // Replace $ARGUMENTS with all args joined by space
    let all_args = args.join(" ");
    result = result.replace("$ARGUMENTS", &all_args);
    // Replace positional arguments $1, $2, $3, etc.
    for (i, arg) in args.iter().enumerate() {
        let placeholder = format!("${}", i + 1);
        result = result.replace(&placeholder, arg);
    }
    result
 }
 #[cfg(test)]
 mod tests {
    use super::*;
    #[test]
    fn substitute_arguments_works() {
        let body = "Args: $ARGUMENTS, First: $1, Second: $2";
        let result = substitute_arguments(body, &["hello", "world"]);
        assert!(result.contains("Args: hello world"));
        assert!(result.contains("First: hello"));
        assert!(result.contains("Second: world"));
    }
    #[test]
    fn substitute_arguments_empty() {
        let body = "Args: $ARGUMENTS, First: $1";
        let result = substitute_arguments(body, &[]);
        assert!(result.contains("Args: ,"));
        assert!(result.contains("First: $1"));  // Unchanged
    }
    #[test]
    fn parse_frontmatter_extracts_metadata() {
        let content = r#"---
 description: "Test"
 author: "Me"
 ---
 Body content
 "#;
        let (metadata, body) = parse_with_frontmatter(content).unwrap();
        assert!(metadata.is_some());
        let m = metadata.unwrap();
        assert_eq!(m.description, Some("Test".to_string()));
        assert_eq!(m.author, Some("Me".to_string()));
        assert_eq!(body.trim(), "Body content");
    }
 }
--- a/crates/tools/slash/tests/slash_command.rs
+++ b/crates/tools/slash/tests/slash_command.rs
@@ -0,0 +1,109 @@
 use tools_slash::parse_slash_command;
 use std::fs;
 use tempfile::tempdir;
 #[test]
 fn slash_parse_frontmatter_and_args() {
    let content = r#"---
 description: "Test command"
 author: "Test Author"
 ---
 This is the command body with $ARGUMENTS
 First arg: $1
 Second arg: $2
 "#;
    let cmd = parse_slash_command(content, &["arg1", "arg2"]).unwrap();
    assert_eq!(cmd.description, Some("Test command".to_string()));
    assert_eq!(cmd.author, Some("Test Author".to_string()));
    assert!(cmd.body.contains("arg1 arg2"));  // $ARGUMENTS replaced
    assert!(cmd.body.contains("First arg: arg1"));  // $1 replaced
    assert!(cmd.body.contains("Second arg: arg2"));  // $2 replaced
 }
 #[test]
 fn slash_parse_no_frontmatter() {
    let content = "Simple command without frontmatter";
    let cmd = parse_slash_command(content, &[]).unwrap();
    assert_eq!(cmd.description, None);
    assert_eq!(cmd.author, None);
    assert_eq!(cmd.body.trim(), "Simple command without frontmatter");
 }
 #[test]
 fn slash_file_refs() {
    let dir = tempdir().unwrap();
    let test_file = dir.path().join("test.txt");
    fs::write(&test_file, "File content here").unwrap();
    let content = format!("Check this file: @{}", test_file.display());
    let cmd = parse_slash_command(&content, &[]).unwrap();
    let resolved = cmd.resolve_file_refs().unwrap();
    assert!(resolved.contains("File content here"));
    assert!(!resolved.contains(&format!("@{}", test_file.display())));
 }
 #[test]
 fn slash_arguments_substitution() {
    let content = "All args: $ARGUMENTS\nFirst: $1\nSecond: $2\nThird: $3";
    let cmd = parse_slash_command(content, &["hello", "world"]).unwrap();
    assert!(cmd.body.contains("All args: hello world"));
    assert!(cmd.body.contains("First: hello"));
    assert!(cmd.body.contains("Second: world"));
    assert!(cmd.body.contains("Third: $3"));  // No third arg, should remain
 }
 #[test]
 fn slash_multiple_file_refs() {
    let dir = tempdir().unwrap();
    let file1 = dir.path().join("file1.txt");
    let file2 = dir.path().join("file2.txt");
    fs::write(&file1, "Content 1").unwrap();
    fs::write(&file2, "Content 2").unwrap();
    let content = format!("File 1: @{}\nFile 2: @{}", file1.display(), file2.display());
    let cmd = parse_slash_command(&content, &[]).unwrap();
    let resolved = cmd.resolve_file_refs().unwrap();
    assert!(resolved.contains("Content 1"));
    assert!(resolved.contains("Content 2"));
 }
 #[test]
 fn slash_empty_args_leaves_placeholders() {
    let content = "Args: $ARGUMENTS, First: $1, Second: $2";
    let cmd = parse_slash_command(content, &[]).unwrap();
    // With no args, $ARGUMENTS becomes empty, but positional args remain
    assert!(cmd.body.contains("Args: ,"));
    assert!(cmd.body.contains("First: $1"));
    assert!(cmd.body.contains("Second: $2"));
 }
 #[test]
 fn slash_complex_frontmatter() {
    let content = r#"---
 description: "Multi-line
 description"
 tags:
  - test
  - example
 version: 1.0
 ---
 Command body
 "#;
    let cmd = parse_slash_command(content, &[]).unwrap();
    assert!(cmd.description.is_some());
    assert!(cmd.description.as_ref().unwrap().contains("Multi-line"));
 }
--- a/images/chat_view.png
+++ b/images/chat_view.png
--- a/images/help.png
+++ b/images/help.png
--- a/images/layout.png
+++ b/images/layout.png
--- a/images/model_select.png
+++ b/images/model_select.png
--- a/images/select_mode.png
+++ b/images/select_mode.png