附录 A：源码导航表

入口与组装

关注点	路径
Rust 进程入口	src-tauri/src/main.rs
Tauri builder、commands、plugins	src-tauri/src/lib.rs
Rust 模块树	src-tauri/src/core/mod.rs
Web boot	web-app/src/main.tsx
根布局与全局 Provider	web-app/src/routes/__root.tsx
ServiceHub	web-app/src/services/index.ts

Core 与领域类型

关注点	路径
Core exports	core/src/index.ts、core/src/browser/index.ts
Extension base	core/src/browser/extension.ts
Engine registry	core/src/browser/extensions/engines/EngineManager.ts
AI engine contracts	core/src/browser/extensions/engines/AIEngine.ts
Thread / message	core/src/types/thread/*、core/src/types/message/*
Model	core/src/types/model/*

聊天主线

关注点	路径
Thread route	web-app/src/routes/threads/$threadId.tsx
Chat wrapper	web-app/src/hooks/use-chat.ts
Transport	web-app/src/lib/custom-chat-transport.ts
Provider factory	web-app/src/lib/model-factory.ts
Context manager	web-app/src/lib/context-manager.ts
Message conversion	web-app/src/lib/messages.ts
Branching	web-app/src/lib/message-branching.ts

Rust 后端

关注点	路径
Shared state	src-tauri/src/core/state.rs
Threads commands	src-tauri/src/core/threads/commands.rs
Thread file helpers	src-tauri/src/core/threads/helpers.rs
Mobile SQLite	src-tauri/src/core/threads/db.rs
HTTP server	src-tauri/src/core/server/commands.rs、proxy.rs
Provider translation	src-tauri/src/core/server/converters.rs
MCP client manager	src-tauri/src/core/mcp/helpers.rs、commands.rs
Downloads	src-tauri/src/core/downloads/commands.rs、models.rs
App data/config	src-tauri/src/core/app/commands.rs、setup.rs

扩展与插件

能力	TypeScript	Rust plugin
Assistant	extensions/assistant-extension	filesystem commands
Conversations	extensions/conversational-extension	threads module
llama.cpp	extensions/llamacpp-extension	src-tauri/plugins/tauri-plugin-llamacpp
MLX	extensions/mlx-extension	src-tauri/plugins/tauri-plugin-mlx
RAG	extensions/rag-extension	tauri-plugin-rag
Vector DB	extensions/vector-db-extension	tauri-plugin-vector-db
Hardware	extensions/llamacpp-extension / hooks	tauri-plugin-hardware
Web search	Web tools	tauri-plugin-websearch

上游导航

源码路径可在 Jan 上游仓库中对应查阅：https://github.com/janhq/jan。由于上游 main 会继续变化，链接用于导航；本文结论以本地 jan-main 快照为准。