Discover NocoDB table IDs dynamically instead of hardcoding them

Table IDs are now fetched at runtime via the NocoDB meta API using
VITE_NOCODB_BASE_ID, so the same code works against any NocoDB instance
(local or Cloudron). Also adds a migration script for moving data between
instances with correct FK remapping.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.gitea/workflows/deploy.yml

@@ -17,6 +17,7 @@ jobs:
         env:
           VITE_NOCODB_URL: ${{ secrets.VITE_NOCODB_URL }}
           VITE_NOCODB_TOKEN: ${{ secrets.VITE_NOCODB_TOKEN }}
+          VITE_NOCODB_BASE_ID: ${{ secrets.VITE_NOCODB_BASE_ID }}
         run: |
           npm ci
           npm run build