refactor: migrate from better-sqlite3 to Prisma

- Install Prisma dependencies and initialize with SQLite
- Create Prisma schema matching existing database structure
- Replace database.js with Prisma-based database service
- Update all API routes, tRPC routers, and WebSocket handler
- Convert TypeScript types to match Prisma schema
- Update build process to include Prisma migrations
- Remove better-sqlite3 dependency

All database operations now use Prisma while maintaining SQLite backend.

Author: michelroegl-brunner

.gitignore

@@ -49,4 +49,5 @@ yarn-error.log*
 *.tsbuildinfo
 
 # idea files
-.idea
+.idea
+/generated/prisma

VERSION

@@ -1 +1 @@
-0.4.1
+0.4.2