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"