Testing with Vitest

We use Vitest for unit, integration, and DOM tests.

pnpm test         # run once (CI mode)
pnpm test:watch   # watch mode

• Config & scripts
• Unit tests: Node, Path
• Graph: Conversation
• Orchestration: ChatSDK (mock socket)
• Rebuilders: shape/transcript
• DOM: TypingObserver with jsdom

See each code block for copy‑paste tests. Adjust imports or enable vite-tsconfig-paths.