fix: crash loop recovery, auto-migrations, CI test pipeline

- Wrap startup syncs in safeStartup() to prevent crash on external service failure
- Add migrate-entrypoint.sh for auto-generating migrations from schema diff
- Update Dockerfile migration stage to use entrypoint script
- Add test job to build-and-publish workflow (runs before build)
- Add tests.yaml workflow to run tests on every push
- Fix test setup to use real RSA key pair instead of plain strings
- Add test script to package.json

.vscode/settings.json

@@ -0,0 +1,5 @@
+{
+  "chat.tools.terminal.autoApprove": {
+    "bun": true
+  }
+}