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

Dockerfile

@@ -67,4 +67,7 @@ RUN bun install --frozen-lockfile
 COPY prisma/ prisma/
 COPY prisma.config.ts ./
 
-CMD ["bunx", "prisma", "migrate", "deploy"]
+COPY prisma/migrate-entrypoint.sh ./prisma/migrate-entrypoint.sh
+RUN chmod +x prisma/migrate-entrypoint.sh
+
+CMD ["sh", "prisma/migrate-entrypoint.sh"]