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

.github/workflows/tests.yaml

@@ -0,0 +1,25 @@
+name: Tests
+
+on:
+  push:
+    branches: ["**"]
+
+jobs:
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@v4
+
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@v2
+
+      - name: Install dependencies
+        run: bun install --frozen-lockfile
+
+      - name: Generate Prisma client
+        run: DATABASE_URL="postgresql://dummy:dummy@localhost:5432/dummy" bunx prisma generate
+
+      - name: Run tests
+        run: bun test --preload ./tests/setup.ts