🐛 fix(cd): fix postgres startup and health check issues in staging

Fixes two critical deployment issues:

1. Postgres Container Startup Failure:
   - Remove missing init.sql volume mount that caused postgres to fail
   - Postgres was trying to mount ./docker/postgres/init.sql which doesn't exist
   - Added REDIS_PASSWORD environment variable

2. Health Check SSH Issues:
   - Consolidated health checks into single SSH session
   - Increased wait time from 30s to 60s for services to fully initialize
   - Improved health check output with clear status messages
   - Added container status logging for debugging

3. Docker Compose Improvements:
   - Remove obsolete 'version: 3.9' field (deprecated in Compose v2)
   - Increase initial startup wait from 10s to 15s

Changes to docker-compose.staging.yml:
- Removed non-existent init.sql volume mount from postgres
- Removed obsolete version field

Changes to .github/workflows/cd-staging.yml:
- Added REDIS_PASSWORD to environment variables
- Consolidated health checks into single SSH session (fixes "ssh: command not found")
- Increased wait times for service initialization
- Improved logging and error messages

This should fix the "dependency failed to start: container manacore-postgres-staging is unhealthy" error.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

docker-compose.staging.yml

@@ -1,5 +1,3 @@
-version: '3.9'
-
 services:
   # ============================================
   # Infrastructure Services
@@ -15,7 +13,7 @@ services:
       POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
     volumes:
       - postgres_data:/var/lib/postgresql/data
-      - ./docker/postgres/init.sql:/docker-entrypoint-initdb.d/init.sql
+      # init.sql removed - not needed for staging
     ports:
       - "5432:5432"
     healthcheck: