fix: Use dynamic imports in hooks to fix better-sqlite3 loading

Changed all hook entry points to use dynamic imports after bootstrap runs. This ensures that better-sqlite3 is installed before Node.js attempts to resolve the import.

Changes:
- Modified src/bin/hooks/*.ts to call ensureDependencies() before dynamic import
- Moved from static `import { hook } from '...'` to `const { hook } = await import('...')`
- This delays module resolution until after npm install completes
- Bumped version to 4.0.6

The previous approach failed because static imports are resolved at module link time, before any runtime code (including ensureDependencies) executes.

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

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

src/bin/hooks/summary-hook.ts

@@ -6,10 +6,13 @@
 
 // Bootstrap: Ensure dependencies are installed before importing modules
 import { ensureDependencies } from '../../shared/bootstrap.js';
+import { stdin } from 'process';
+
+// Run bootstrap synchronously BEFORE any dynamic imports
 ensureDependencies();
 
-import { summaryHook } from '../../hooks/summary.js';
-import { stdin } from 'process';
+// Dynamic import AFTER bootstrap ensures dependencies are installed
+const { summaryHook } = await import('../../hooks/summary.js');
 
 // Read input from stdin
 let input = '';