feat: add LexAI status bar and suggestion panel

- Implemented a status bar item for LexAI with dynamic status updates (ready, processing, notReady).
- Created a suggestion panel for displaying and interacting with AI-generated suggestions.
- Added functionality for accepting, regenerating, and discarding suggestions within the suggestion zone.
- Introduced configuration options for writing style, prompt patterns, personas, and formats.
- Integrated progress indicators for long-running tasks and improved user feedback.
- Established TypeScript configuration for the vscode package.

docs/HANDOFF.md

@@ -1,10 +1,10 @@
-# Handoff — LexAI
+# Handoff
 
-## Handoff — 2026-08-12
+> Current state and the next action — nothing else. **Hard cap: 25 lines.**
 
-Outcome: done — v1.1.0 released to `main`.
-Shipped: Prompt Builder pattern upgrade (12 patterns, live hints, migration, token-floor fix — from the 2026-08-08 session); `CHANGELOG.md` (Keep a Changelog format); `.gitea/workflows/release.yml` now builds the Gitea release body from the matching `CHANGELOG.md` section (generic fallback if absent) and fixes the zip so `manifest.json` sits at the archive root; `package.json`/`package-lock.json` bumped to 1.1.0; one `CLAUDE.md` line documenting the CHANGELOG-gated release process.
-Verified: `npm run typecheck` clean; `npm test -- --run` 64/64 passing; `npm run build` OK; `.output/chrome-mv3/manifest.json` version = 1.1.0; zip at `.output/lexai-1.1.0-chrome.zip`; owner did the load-unpacked real-page check (Prompt dropdown/hint, patterns, migration all confirmed) — closes the item that was open in the prior handoff. Independent critic reviewed the `release.yml` edit; its P2 findings were fixed before merge.
-Decisions: see `docs/DECISIONS.md` new entry — release notes live in `CHANGELOG.md`; `release.yml` derives the Gitea release body from it.
-Known risks: none new. Standing risks unchanged — T-01 (`<all_urls>` narrowing), T-02 (real key encryption) — see `docs/PROGRESS.md`.
-Next smallest action: owner authorizes `git tag v1.1.0 && git push origin v1.1.0`, which publishes live to the Chrome Web Store.
+## Current state
+
+- **Outcome:** VSIX install built; deploy guide written.
+- **Artifact:** `packages/vscode/lexai-vscode-0.1.0.vsix` (~44 KB). Guide: `packages/vscode/DEPLOY.md`.
+- **Verified:** `npm run package` in `packages/vscode` succeeded.
+- **Next smallest action:** Install from VSIX locally; for public store, create Marketplace publisher + `vsce publish` (set `private: false` first).