Initial monorepo scaffold for Duoc Thu RAG medical chatbot

apps/ai-service/README.md

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+# ai-service
+
+Python/FastAPI. RAG orchestration: embed query -> vector search in Qdrant ->
+build grounded prompt -> call OpenAI chat completion -> return answer +
+citations. Stateless — does not own chat history itself.

apps/ai-service/pyproject.toml

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+[project]
+name = "ai-service"
+version = "0.0.0"
+description = "RAG orchestration + OpenAI calls for the Duoc Thu medical chatbot"
+requires-python = ">=3.11"
+dependencies = []
+
+[build-system]
+requires = ["setuptools>=68"]
+build-backend = "setuptools.build_meta"

apps/api-gateway/README.md

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+# api-gateway
+
+NestJS. Single public entry point: request routing, JWT validation, rate
+limiting. Routes to `auth-service`, `user-service`, `chat-service` over
+internal REST. Frontend and clients only ever talk to this service.

apps/api-gateway/package.json

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+{
+  "name": "@duoc-thu/api-gateway",
+  "private": true,
+  "version": "0.0.0"
+}

apps/auth-service/README.md

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+# auth-service
+
+NestJS. User signup/login, password hashing, JWT issuance/refresh. Owns the
+users/credentials table in Postgres. No dependency on other services.

apps/auth-service/package.json

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+{
+  "name": "@duoc-thu/auth-service",
+  "private": true,
+  "version": "0.0.0"
+}

apps/chat-service/README.md

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+# chat-service
+
+NestJS. Chat session lifecycle and message history persistence (Postgres).
+Calls `ai-service` synchronously per user message to get the assistant reply,
+then persists both turns.

apps/chat-service/package.json

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+{
+  "name": "@duoc-thu/chat-service",
+  "private": true,
+  "version": "0.0.0"
+}

apps/mobile/README.md

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+# mobile
+
+Reserved for a future mobile app (React Native/Flutter, TBD). Not built yet —
+placeholder only so the monorepo layout doesn't need restructuring later.

apps/user-service/README.md

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+# user-service
+
+NestJS. Profile data, preferences (language, saved drugs), account settings.
+Owns profile tables in Postgres, called by the gateway.

apps/user-service/package.json

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+{
+  "name": "@duoc-thu/user-service",
+  "private": true,
+  "version": "0.0.0"
+}

apps/web/README.md

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+# web
+
+Next.js frontend. Chat UI, auth pages, citation/disclaimer rendering, session
+history. Talks only to `api-gateway` — never calls internal services directly.

apps/web/package.json

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+{
+  "name": "@duoc-thu/web",
+  "private": true,
+  "version": "0.0.0"
+}