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)

drizzle/meta/_journal.json

@@ -106,6 +106,13 @@
       "when": 1778600000000,
       "tag": "0014_paper_ink_theme",
       "breakpoints": true
+    },
+    {
+      "idx": 15,
+      "version": "7",
+      "when": 1748736000000,
+      "tag": "0015_garden_schema",
+      "breakpoints": true
     }
   ]
 }