CoreApplication

Use when working in ai-service/ - FastAPI HTTP server + aiokafka Worker. Covers: async document ingestion, error diagnosis, quiz generation, spaced repetition, knowledge graph, Qdrant, Neo4j, MinIO, pgvector fallback.

Use when working in auth-and-management-service/ - Java 21 + Spring Boot 3.x. Covers: JWT, user sync, layered architecture, JPA, email, password reset, events, tasks, announcements, CORS, security config.

ALWAYS load this before any other BDC skill. Covers: full microservices architecture, environment variables, secrets, CORS, Docker Compose, CI/CD, Kafka event bus, and inter-service API contracts.

Use for every task touching frontend/src/ - components, hooks, service calls, page routes, API route handlers, Tailwind styling, dark mode, modals, forms, or any new feature. Also consult when wiring up environment variables, proxy-aware fetches, or reviewing code consistency.

Use when working in lms-service/ - Go 1.24 + Gin + PostgreSQL + Redis + Kafka. Covers: courses, sections, content, quizzes, forum, enrollments, file upload, progress tracking, Kafka AI command publishing, Redis job cache, user sync.

Use when writing any documentation for the BDC CoreApplication project. Covers: API docs, architecture docs, developer guides, technical notes, ADRs, onboarding guides, Kafka event contracts. All docs use ASCII diagrams, no emoji, formal technical English, and follow the BDC documentation standard.

Use when writing, reviewing, or expanding test cases for any BDC service. Covers: unit tests, integration tests, repository tests, service tests, controller tests, and Kafka worker tests for Java (JUnit 5), Go (testing), and Python (pytest). Enforces AAA structure, descriptive naming, and coverage requirements.