v0.8.4

Two fixes in one. Timeout no longer kills long streams: requestTimeoutMs used to cover the whole fetch, so long reasoning turns on muse-spark tripped the 60s budget in batches (The operation was aborted due to timeout, ledger rows error:23). It now guards connect plus response headers only; the timer stops at headers and the body phase is watched by the stream idle watchdog alone. Ledger rows for DOMException aborts now read error:TimeoutError instead of error:23. Local-source install no longer crashes boot (issue 2): pnpm link installs left the host-half peer imports unresolvable (ERR_MODULE_NOT_FOUND, fatal at loader import). New scripts/setup-local-deps.cjs bridges node_modules/@deepseek-ai to the host tree (auto-detected, --host override, --dry-run probe); README zh/en document the extra step.