ci(deploy): fix minio healthcheck for newer image (curl + mc fallback)

Server's mirror minio:latest is newer than dev's cached RELEASE.2025-09-07 and
dropped the bundled mc client, so 'mc ready local' failed → fr2-minio unhealthy →
up aborted. Switch to MinIO's curl liveness endpoint with an mc fallback so it
works across image versions; bump start_period 10s→20s, retries 5→8.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

docker-compose.v2.yml

@@ -53,11 +53,13 @@ services:
       - "${EDGE_BIND:-0.0.0.0}:${MINIO_PORT:-9000}:9000"
       - "${EDGE_BIND:-0.0.0.0}:${MINIO_CONSOLE_PORT:-9001}:9001"
     healthcheck:
-      test: ["CMD-SHELL", "mc ready local || exit 1"]
+      # Liveness via curl (newer images) with an mc fallback (older images that
+      # still bundle the client). Covers minio:latest drift either way.
+      test: ["CMD-SHELL", "curl -sf http://localhost:9000/minio/health/live || mc ready local || exit 1"]
       interval: 10s
       timeout: 5s
-      retries: 5
-      start_period: 10s
+      retries: 8
+      start_period: 20s
 
   # ── Identity Service (.NET 10) ──────────────────────────────────────────────
   # Config keys: ConnectionStrings:DefaultConnection  Jwt:Secret