🔧(compose) replace MinIO by Garage for local development

The development stacks now run Garage instead of MinIO which is
deprecated.

Garage is a bit stricter than MinIO:
- key IDs and secrets must be at least 8 and 16 characters long
- requests must be signed for its region, so every development env now sets
  AWS_S3_REGION_NAME=local;
- cross-origin requests are denied unless the bucket CORS rules allow
  them, so a one-shot aws-cli container allows the frontend origin to
  upload files straight to the bucket.

docs/developping_locally.md

@@ -13,7 +13,7 @@ These components rely on a few key services:
 
 - PostgreSQL for storing data (users, rooms, recordings)
 - Redis for caching and inter-service communication
-- MinIO for storing files (room recordings)
+- Garage for storing files (room recordings)
 - Celery workers for meeting transcript (optional, required for AI beta features)
 
 We provide two stack options for getting Visio up and running for development:

docs/installation/compose.md

@@ -14,7 +14,7 @@ All services are required to run the minimalist instance of LaSuite Meet. Click
 | **OIDC Provider** | User authentication | [Keycloak setup](../examples/compose/keycloak/README.md) |
 | **SMTP Service**  | Email notifications | -                                                        |
 
-> [!NOTE] Some advanced features, as Recording and transcription, require additional services (MinIO, email). See `/features` folder for details.
+> [!NOTE] Some advanced features, as Recording and transcription, require additional services (S3-compatible object storage, email). See `/features` folder for details.
 
 
 ## Software Requirements