feat(vscode): add full chat interface to OpenClaude extension (#608)

Add a Claude Code-like chat experience to the VS Code extension with:
- Streaming chat panel (sidebar + editor tab) with markdown rendering
- Tool use visualization with inline diffs (replace/with display)
- Session history browser with JSONL transcript parsing
- Thinking block indicator with elapsed time and token count
- Clickable file paths that open in the editor
- Permission mode setting (acceptEdits default)
- Multi-turn conversation support via NDJSON stream-json protocol
- Status bar with live activity indicators
- Ctrl+Shift+L keybinding to open chat panel

Made-with: Cursor

Co-authored-by: henriquepasquini2 <henriquepasquini2@users.noreply.github.com>

vscode-extension/openclaude-vscode/scripts/lint.js

@@ -0,0 +1,17 @@
+const { readdirSync } = require('node:fs');
+const { execFileSync } = require('node:child_process');
+const { join } = require('node:path');
+
+function check(dir) {
+  for (const f of readdirSync(dir, { withFileTypes: true })) {
+    if (f.isDirectory()) {
+      check(join(dir, f.name));
+    } else if (f.name.endsWith('.js') && !f.name.endsWith('.test.js')) {
+      execFileSync(process.execPath, ['--check', join(dir, f.name)], {
+        stdio: 'inherit',
+      });
+    }
+  }
+}
+
+check('./src');