feat: add video recording tools for browser sessions

Add three new MCP tools for recording browser automation:
- browser_start_recording: Enable video recording with configurable size/filename
- browser_stop_recording: Stop recording and return video file paths
- browser_recording_status: Check recording status and configuration

Key features:
- Automatic video saving when pages/contexts close
- Configurable video size and output directory
- Enhanced LLM guidance with clear workflow instructions
- Integration with existing browser context management

Videos are saved as .webm files in {outputDir}/videos/ directory.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/tools.ts

@@ -27,6 +27,7 @@ import pdf from './tools/pdf.js';
 import snapshot from './tools/snapshot.js';
 import tabs from './tools/tabs.js';
 import screenshot from './tools/screenshot.js';
+import video from './tools/video.js';
 import wait from './tools/wait.js';
 import mouse from './tools/mouse.js';
 
@@ -48,6 +49,7 @@ export const allTools: Tool<any>[] = [
   ...screenshot,
   ...snapshot,
   ...tabs,
+  ...video,
   ...wait,
 ];