Update extension system and database migrations

Changes:
- Added CLAUDE.md with project instructions
- Updated extension manifest bindings (TypeScript)
- Regenerated database migrations (consolidated into single migration)
- Updated haex schema with table name handling
- Enhanced extension manager and manifest handling in Rust
- Updated extension store in frontend
- Updated vault.db

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

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

CLAUDE.md

@@ -0,0 +1,13 @@
+# Verwandte Projekte
+
+## SDK
+
+- /home/haex/Projekte/haexhub-sdk
+
+## Erweiterung HaexPass (Password Manager)
+
+- /home/haex/Projekte/haex-pass
+
+# Codingstyle
+
+- alle asynchronen Funktionen bitte mit Async prependen