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/esbuild.mjs

@@ -0,0 +1,34 @@
+import * as esbuild from 'esbuild';
+import { resolve, dirname } from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const watch = process.argv.includes('--watch');
+const libRoot = resolve(__dirname, '../../src/lib');
+
+/** @type {import('esbuild').BuildOptions} */
+const options = {
+  entryPoints: [resolve(__dirname, 'src/extension.ts')],
+  bundle: true,
+  outfile: resolve(__dirname, 'out/extension.js'),
+  external: ['vscode'],
+  format: 'cjs',
+  platform: 'node',
+  target: 'node22',
+  sourcemap: true,
+  sourcesContent: false,
+  logLevel: 'info',
+  // Share the Chrome extension's portable core without relocating it.
+  alias: {
+    '@lib': libRoot,
+  },
+};
+
+if (watch) {
+  const ctx = await esbuild.context(options);
+  await ctx.watch();
+  console.log('[lexai-vscode] watching…');
+} else {
+  await esbuild.build(options);
+  console.log('[lexai-vscode] compiled → out/extension.js');
+}