fix: add environment variable exports to startup scripts

- Added MOMENTRY_OUTPUT_DIR, DATABASE_SCHEMA, MOMENTRY_REDIS_PREFIX exports
- Created run-worker-3002.sh for standalone worker
- Created config/ directory with environment-specific files
- Updated AGENTS.md with critical variables section and release checklist

This fixes Python subprocess environment variable inheritance issue
where store_traced_faces.py was using wrong output directory.

run-server-3003.sh

@@ -13,6 +13,7 @@ mkdir -p logs
 export DATABASE_SCHEMA=dev
 export MOMENTRY_SERVER_PORT=3003
 export MOMENTRY_REDIS_PREFIX=momentry_dev:
+export MOMENTRY_OUTPUT_DIR=/Users/accusys/momentry/output_dev
 
 # Kill existing server on port 3003
 PID=$(lsof -ti :3003 2>/dev/null || true)