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.

packages/vscode/README.md

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+# LexAI — AI Writing & Code Assist
+
+**Bring your own LLM key.** LexAI helps you write and work with code in VS Code / Cursor — no LexAI account, no subscription, no LexAI servers.
+
+Select text or code → run an action or ask in **Code Assist** → **Accept** / **Regenerate** / **Discard** in the editor.
+
+---
+
+## Also available for Chrome
+
+Use the same LexAI writing assistant on any webpage:
+
+**[LexAI — AI Writing Assistant (Chrome Web Store)](https://chromewebstore.google.com/detail/bagpcheidbkfgijnnmolnkgagibbjfnk)**
+
+On the web: select text → Fix / Rephrase / Shorten / Expand / Explain / Make Prompt → Replace or Copy. Same BYO-key idea as this VS Code extension.
+
+---
+
+## All features (VS Code / Cursor)
+
+### Code Assist (workspace-aware)
+- Select code → **Code Assist** → type what you want in an **inline prompt** above the selection (Copilot-style zone), then **Ask LexAI**.
+- Examples: explain, refactor, add error handling, rewrite for clarity, review a function.
+- LexAI gathers **workspace context**: selected code, surrounding lines, import/require targets, and symbol definitions from **other files** (via the language server).
+- Result opens in the suggestion zone with Accept / Regenerate / Discard.
+- Available from CodeLens, editor context menu, Command Palette, and the Activity Bar sidebar.
+
+### Writing actions
+| Action | What it does |
+| --- | --- |
+| **Fix Grammar** | Correct spelling, grammar, and punctuation |
+| **Rephrase** | Make text clearer / more professional |
+| **Shorten** | Cut fluff while keeping the message |
+| **Expand** | Add detail, context, and supporting points |
+| **Explain** | Break down complex text into plain language |
+| **Make Prompt** | Turn a rough idea into a structured AI prompt |
+
+### Prompt Builder (Make Prompt)
+- Structural **patterns** (auto, zero-shot, role, few-shot, and more)
+- **Persona** presets, including custom persona text
+- Preferred **output format**
+- Optional **model override** for Make Prompt only
+- Adjust in Settings, or via **inline option chips** in the suggestion zone (click a chip to regenerate)
+
+### Writing styles
+Apply to Fix / Rephrase / Shorten / Expand / Explain:
+
+**Default · Formal · Casual · Academic · Creative · Concise**
+
+Change in Settings or via option chips in the suggestion zone.
+
+### Where you can start an action
+- **CodeLens** — select ≥10 characters; click **LexAI** on the first selected line to expand actions in place (Code Assist + writing actions)
+- **Editor context menu** — right-click selection → **LexAI** submenu
+- **Gutter / line-number context** — LexAI submenu when a selection is active
+- **Command Palette** — `LexAI: Fix Grammar`, Rephrase, Shorten, Expand, Explain, Make Prompt, Code Assist, Show Actions, …
+- **Activity Bar sidebar** — LexAI icon → Workspace panel: paste or type text, pick an action (including Code Assist), run, **Copy** or reuse as input; **Insert selection** pulls from the editor
+- **Status bar** — **✓ LexAI** ready · **⟳ LexAI** processing · **⚠ LexAI** not ready (click opens Settings)
+
+### Suggestion UI
+- **In-editor zone** (default) — comment widget above the selection with Accept / Regenerate / Discard and option chips
+- **Side panel** — optional suggestion panel
+- Setting `lexai.suggestionUi`: `zone` | `panel` | `both`
+- `lexai.previewBeforeReplace` — preview before replacing the selection (default on)
+- `lexai.askOptionsBeforeGenerate` — optional Quick Picks for style / Prompt Builder before each run
+
+### Settings & account-free setup
+- **LexAI: Open Settings** — branded settings UI for provider, model, writing style, Prompt Builder, and API key
+- **LexAI: Set API Key** / **Clear API Key**
+- **LexAI: Show Configuration Status**
+- Providers: **OpenAI · Anthropic · Groq · OpenRouter**
+- API key stored in **VS Code Secret Storage** (not plain settings)
+- Non-secret prefs use `lexai.*` settings
+
+---
+
+## Quick start
+
+1. Install this extension (Marketplace, Open VSX, or **Install from VSIX**).
+2. Command Palette → **LexAI: Open Settings** → provider, model, API key.
+3. Select text or code → click **LexAI** on the line → pick an action or **Code Assist**.
+4. Review in the suggestion zone → Accept to replace the selection (or Copy from the sidebar / panel).
+
+Install / publish details: [DEPLOY.md](./DEPLOY.md).
+
+---
+
+## Privacy
+
+- No LexAI backend and no LexAI telemetry.
+- API key lives in the editor’s Secret Storage.
+- Your text is sent only to the LLM provider you configure.
+
+---
+
+## Links
+
+| | |
+| --- | --- |
+| **Chrome extension** | [Chrome Web Store](https://chromewebstore.google.com/detail/bagpcheidbkfgijnnmolnkgagibbjfnk) |
+| **Source** | [LexAI repository](https://git.juankibin.space/kibin/LexAI) |
+| **Publisher** | JuanKibin |