infra: migrate deployment to Coolify with Garage S3

- Remove docker-compose files (Coolify manages services individually)
- Replace MinIO with Garage (S3-compatible, actively maintained)
- Add CI deploy job: build+push :develop image on every green Develop push
- Add Coolify webhook trigger for automatic redeployment
- Update README, .env.example, and storage references
- Rename migrate script to provider-agnostic name

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/server/services/storage.service.ts

@@ -6,9 +6,7 @@ import {
 } from "@aws-sdk/client-s3";
 import { getSignedUrl } from "@aws-sdk/s3-request-presigner";
 
-// MinIO GitHub repository was archived Feb 2026. The S3 API abstraction
-// makes the underlying provider swappable (SeaweedFS, Garage, AWS S3, etc.)
-// without code changes.
+// S3 API abstraction — provider-agnostic (Garage, Cloudflare R2, AWS S3).
 
 const s3 = new S3Client({
 	endpoint: process.env.S3_ENDPOINT,
@@ -17,7 +15,7 @@ const s3 = new S3Client({
 		accessKeyId: process.env.S3_ACCESS_KEY!,
 		secretAccessKey: process.env.S3_SECRET_KEY!,
 	},
-	forcePathStyle: true, // REQUIRED for MinIO and most S3-compatible services
+	forcePathStyle: true, // REQUIRED for Garage and most S3-compatible services
 });
 
 const bucket = process.env.S3_BUCKET ?? "gearbox-images";