fix(WP-0004): live deployment fixes from integration test

- Dockerfile: copy alembic.ini + migrations/ so actcore-migrate works
- docker-compose.railiance.yml:
    - Temporal: add dynamicconfig volume mount + correct DYNAMIC_CONFIG_FILE_PATH
    - Temporal: healthcheck uses 'temporal operator cluster health' (not tctl)
    - NATS: add monitoring port -m 8222 for wget-based healthcheck
    - actcore-api healthcheck: use Python urllib (curl absent from slim image)
- api.py: fix /health Temporal probe — Client has no describe_namespace;
    use workflow_service.get_system_info(GetSystemInfoRequest()) instead
- Makefile: grep -Eh to suppress filename prefix when MAKEFILE_LIST has
    multiple files (.env included via -include)

All 8 services start cleanly; /health returns {"status":"ok",...} HTTP 200;
SIGTERM drains worker cleanly within grace period; make help correct.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Makefile

@@ -49,6 +49,6 @@ start-event-router:  ## Start NATS event router
 # ── Help ──────────────────────────────────────────────────────────────────────
 
 help:  ## Show this help message
-	@grep -E '^[a-zA-Z_-]+:.*?##' $(MAKEFILE_LIST) | \
+	@grep -Eh '^[a-zA-Z_-]+:.*?##' $(MAKEFILE_LIST) | \
 		awk 'BEGIN {FS = ":.*?## "}; {printf "  \033[36m%-24s\033[0m %s\n", $$1, $$2}' | \
 		sort