Allow authenticated (non-admin) users to fetch API key usage by replacing @admin_required with @auth_required in api_analytics.py and importing auth_required. Add optional user support to privileged_cmd and run_privileged in app/utils/system.py so callers can run commands as a specific user (sudo -u). Update wordpress_service to use the new user keyword when invoking privileged commands. Fix tests/conftest.py to put the backend root (parent directory) on sys.path so tests import correctly.
Introduce programmatic API features and observability: add API Key management, API usage analytics, webhook event subscriptions, and OpenAPI docs. New models (ApiKey, ApiUsageLog, ApiUsageSummary, EventSubscription, EventDelivery), services (api_analytics, api_key, event, openapi), and blueprints (/api-keys, /api-analytics, /event-subscriptions, /docs) were added and registered in create_app. Middleware for API key authentication, buffered analytics logging (with a flush thread), and enhanced rate limiting (custom key function and response headers) were implemented; RBAC was updated to accept API key auth via an auth_required decorator. Background threads for hourly aggregation and event retry were added; security CSP updated to allow resources for Swagger UI. Frontend settings UI and styles were added/updated for API keys and webhooks, and requirements were updated.