chore: update workspace paths after directory reorganization

Update workspace members and dependency paths to reflect new directory structure:
- crates/cli → crates/app/cli
- crates/config → crates/platform/config

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Cargo.toml

@@ -1,8 +1,8 @@
 [workspace]
 members = [
-  "crates/cli",
+    "crates/app/cli",
   "crates/llm/ollama",
-  "crates/config"
+    "crates/platform/config"
 , "crates/tools/fs"]
 resolver = "2"
 

crates/app/cli/Cargo.toml

@@ -13,7 +13,7 @@ serde_json = "1"
 color-eyre = "0.6"
 llm-ollama = { path = "../../llm/ollama" }
 tools-fs = {path = "../../tools/fs" }
-config-agent = { package = "config-agent", path = "../../config" }
+config-agent = { package = "config-agent", path = "../../platform/config" }
 futures-util = "0.3.31"
 
 [dev-dependencies]