feat: improve VS Code dev flow and stabilize sidebar/chat behavior (#754)

* fix: improve session sidebar tooltip and truncation behavior

- Keep new-draft tooltip anchored to its trigger button
- Fix minimal-mode worktree/group header text truncation
- Tune minimal-mode right padding to reduce early label clipping

* fix: render reasoning through markdown pipeline

- Use Streamdown rendering for reasoning in live chat mode
- Remove italic styling from reasoning text
- Render expanded reasoning content with MarkdownRenderer

* chore: remove legacy electron dependencies

- Removed unused Electron packages from root and UI manifests
- Deleted obsolete Electron context menu type declaration
- Regenerated lockfile after dependency cleanup

* fix: handle non-repository folders in git status API

- Prevent 500 errors when status is requested outside a valid Git repo
- Improve repository detection using `git rev-parse --git-dir`
- Reduce noisy server logs for expected non-repo status checks

* fix unloaded session chat layout flicker

* fix: reduce noisy TTS status polling

Cache and dedupe TTS status requests, and only check provider availability when the related voice features are enabled so disabled voice setups stay quiet.

* perf: throttle background PR git status refreshes

* fix: improve VS Code Explorer file drop mentions in chat

- Add Explorer context action to insert selected files as @mentions.
- Handle Explorer drag-and-drop to prefill @file mentions instead of attachments.
- Prevent duplicate plain-path text when dropping multiple files.

* fix: deduplicate recent sessions in VS Code sidebar

- Hide sessions from main list when already shown in recent
- Apply dedup only in VS Code runtime
- Keep session search behavior unchanged

* feat: add true HMR dev flow for VS Code extension

- Load VS Code webview from Vite dev server with React refresh preamble
- Add `vscode:dev` runner that starts watchers and opens Extension Development Host
- Update VS Code dev docs and scripts to use the new HMR startup flow

* feat: polish VS Code session sidebar and attachment UX

- Add resizable sessions sidebar in VS Code layout
- Tighten session list spacing and hover behavior in VS Code
- Remove bulk file/image attach success toasts while keeping error toasts

package.json

@@ -48,7 +48,7 @@
     "desktop:build": "bun run --cwd packages/desktop build:sidecar && bun run --cwd packages/desktop tauri build",
     "desktop:lint": "bun run --cwd packages/desktop lint && cargo fmt --manifest-path packages/desktop/src-tauri/Cargo.toml -- --check && cargo clippy --manifest-path packages/desktop/src-tauri/Cargo.toml -- -D warnings",
     "desktop:type-check": "bun run --cwd packages/desktop type-check && cargo fmt --manifest-path packages/desktop/src-tauri/Cargo.toml -- --check && cargo clippy --manifest-path packages/desktop/src-tauri/Cargo.toml -- -D warnings",
-    "vscode:dev": "bun run --cwd packages/vscode dev",
+    "vscode:dev": "node ./scripts/dev-vscode.mjs",
     "vscode:build": "bun run --cwd packages/vscode build",
     "vscode:package": "bun run --cwd packages/vscode package",
     "vscode:type-check": "bun run --cwd packages/vscode type-check",
@@ -89,7 +89,7 @@
     "@ibm/plex": "^6.4.1",
     "@lezer/highlight": "^1.2.3",
     "@octokit/rest": "^22.0.1",
-    "@opencode-ai/sdk": "^1.2.27",
+    "@opencode-ai/sdk": "^1.3.0",
     "@radix-ui/react-collapsible": "^1.1.12",
     "@radix-ui/react-dialog": "^1.1.15",
     "@radix-ui/react-dropdown-menu": "^2.1.16",
@@ -105,8 +105,6 @@
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "cmdk": "^1.1.1",
-    "electron-context-menu": "^4.1.1",
-    "electron-store": "^11.0.2",
     "express": "^5.1.0",
     "ghostty-web": "0.3.0",
     "http-proxy-middleware": "^3.0.5",
@@ -141,8 +139,6 @@
     "concurrently": "^9.2.1",
     "cors": "^2.8.5",
     "cross-env": "^7.0.3",
-    "electron": "^38.2.0",
-    "electron-builder": "^24.13.3",
     "eslint": "^9.33.0",
     "eslint-plugin-react-hooks": "^5.2.0",
     "eslint-plugin-react-refresh": "^0.4.20",