- Introduced the `CollabGuestUiResult` type to distinguish between answers and unavailable states during guest UI requests.
- Updated the remote dialog race logic to ignore unavailable guest results and fallback to the local host dialog.
- Centralized the `FakeWebSocket` and `InMemoryRelay` test infrastructure into a shared test helpers file.
- Cleaned up duplicate mock implementations and updated existing test suites to utilize the shared in-memory relay helpers.
The host used to ship the entire transcript inside a single welcome
frame, so a multi-MB session spent the guest's 30s first-welcome
timeout on the relay transfer itself: ~1.3 MB took ~3s, ~4.2 MB took
~12s, and ~13.6 MB never arrived before the guest gave up with
'timed out waiting for the host's welcome'.
Bump COLLAB_PROTO to 2 and split the welcome:
- welcome carries metadata only (header, state, agents, entryCount,
readOnly) and lands in well under one second.
- a train of snapshot-chunk frames (SNAPSHOT_CHUNK_BYTES = 512 KB,
oversize entries ship alone) carries the transcript. Last chunk
flips final: true; an empty snapshot still emits one final chunk.
- the host queues welcome + chunks synchronously inside #handleHello,
preserving the host comment's ordering invariant (later broadcast
frames cannot interleave between them).
- the TUI guest accumulates chunks under a SNAPSHOT_PROGRESS_TIMEOUT_MS
that resets per chunk; only after final does it write the replica
jsonl, switchSession, and render. The first-welcome timeout still
guards arrival of the small welcome.
- the collab-web GuestClient streams entries into the snapshot as
chunks arrive and flips phase to 'live' on final.
Includes a contract test (in-process relay) asserting the welcome is
metadata-only, the chunk train fans the 1.5 MB synthetic transcript
across multiple frames with only the last marked final, and the
flattened entries match the source snapshot.
Fixes#3144
- Replaced Bun.sleep and wall-clock timing with fake timers (vi.useFakeTimers), release gates, and deterministic polling across 15+ test files to eliminate flakiness and improve speed.
- Consolidated per-test fixture setup into beforeAll/afterAll lifecycle hooks across 20+ test files, reducing redundant initialization and improving test performance by reusing shared immutable fixtures.
- Stubbed network calls in ModelRegistry and test discovery to prevent unintended outbound requests during test execution.
- Replaced subprocess-based test coordination (file markers, Bun.sleep polling) with in-memory fakes (FakeWebSocket, FakeLspServer, VirtualClock) for deterministic, fast test execution.
The host schedules a debounced state broadcast right after hello; on slow
runners it lands between a guest's mutating frame and the directed error
reply, so nextFrame() saw "state" instead of "error". Guests now drop
broadcast-only frames (state/agents/entry/event/bus) and wait solely on
directed welcome/error replies.
- Re-polled steering at the loop yield boundary and included it in the pre-stop pending batch so late messages are processed immediately.
- Added session-side draining for stranded queued messages, scheduling an auto-continue when a prompt settles and follow-ups or steers remain.
- Added a regression test for late steering injection at yield and updated mid-turn collab prompt handling to keep steering messages in the pending display queue until consumed.
- Enabled read-only mode by wiring snapshot.readOnly through AgentDrawer and Composer to block prompts and controls.
- Added read-only indicators in the header and participant titles for view-only sessions.
- Added SEO and app metadata assets by updating index.html head tags, manifest, robots.txt, and sitemap.xml.
- Updated brand presentation by adding new favicon/OG assets and switching theme tokens to new OMP colors.
can1357