feat: add garden module infrastructure (task 70)

- Add MinIO service to compose.yaml with named volume
- Add generic /api/uploads POST+GET route with auth, 5 MB, image/* guards
- Add src/lib/minio.ts singleton client with ensureBucket helper
- Add garden Drizzle schema: containers, plants, care_logs, care_schedules, species_cache
- Register garden module in src/modules/index.ts and src/lib/db.ts
- Apply migration 0015_garden_schema.sql
- Add MINIO_* and PERENUAL_API_KEY to .env.example
- Add task briefs 70-75 for the full garden feature arc
- Add uploads.spec.ts E2E test (RED → GREEN on route auth guard)

package.json

@@ -86,6 +86,7 @@
     "cmdk": "^1.1.1",
     "drizzle-orm": "^0.45.2",
     "lucide-react": "^1.14.0",
+    "minio": "^8.0.7",
     "next": "^15.5.15",
     "next-auth": "5.0.0-beta.31",
     "pino": "^10.3.1",