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* feat(web): pure reducer for Critique Theater states (Phase 7.1)
Pure CritiqueState reducer driven by the contracts-level PanelEvent
(the same shape both the live SSE stream and the recorded transcript
emit), so a single reducer powers both the in-flight panel and the
rerun replay. Lifecycle covers run_started → running → (shipped /
degraded / interrupted / failed), with panelist_open / dim /
must_fix / close / round_end events building per-round
CritiquePanelistView entries as they arrive.
Defensive behaviour that surfaced while writing the spec tests:
- Terminal phases (shipped / degraded / interrupted / failed) are
sticky against further lifecycle events for the same run, except
for parser_warning which can land late and is recorded in a side
channel without changing phase.
- A new run_started for a different runId at any time discards the
prior state and reboots, so the UI can launch consecutive runs
without an explicit reset action.
- Events whose runId does not match the active run return the same
state reference, so React's useReducer doesn't re-render
subscribers on stray traffic.
- Round bookkeeping keys by round number rather than "always last",
so an out-of-order panelist_dim for round 1 arriving after a
round 2 dim does not corrupt the round 2 bucket.
Test coverage: 18 cases covering each transition, the runId guard,
sticky-terminal behaviour, the out-of-order round invariant, and
the stable-identity guarantee. Sets up Phase 7.2 and 7.3 to wire
SSE + replay into the same reducer.
* feat(web): useCritiqueStream hook subscribes to SSE and feeds reducer (Phase 7.2)
createCritiqueEventsConnection is a pure connection manager that
mirrors apps/web/src/providers/project-events.ts: opens an
EventSource at /api/projects/:id/events, listens for every name in
CRITIQUE_SSE_EVENT_NAMES, decodes each frame back into a PanelEvent
(stripping the critique. prefix and merging the data payload), and
hands it to the caller's onEvent. Reconnect uses exponential
backoff (1s → 30s) and resets on `ready`; malformed payloads drop
with a dev-mode warning rather than tearing the stream.
useCritiqueStream wraps the manager in a useReducer that owns the
CritiqueState. enabled=false or a null projectId tears down the
connection cleanly; switching projectId closes the old connection
and opens a fresh one. The returned dispatch lets local UI
synthesise actions (e.g. an Esc keypress firing a synthetic
interrupted while a kill request is in flight); production traffic
comes from the SSE stream.
Test coverage:
- sse.test.ts (10 cases, node env): subscription set covers every
CRITIQUE_SSE_EVENT_NAMES channel; payload decoding lifts the wire
shape back to PanelEvent; malformed JSON is swallowed and does
not stop the stream; exponential backoff schedule and ready-reset
semantics are pinned with a setTimeout seam; close() cancels
pending reconnects and shuts the live source; no-op fallback
when EventSource is unavailable.
- useCritiqueStream.test.tsx (6 cases, jsdom env): idle pre-event,
reducer driven by synthetic actions, no connection when disabled
or projectId is null, clean close on unmount, projectId change
reopens cleanly.
* feat(web): useCritiqueReplay hook drives reducer from transcript file (Phase 7.3)
Fetches the per-run NDJSON transcript (one PanelEvent per line),
parses every line via the shared isPanelEvent predicate, and
dispatches into the same CritiqueState reducer the live SSE stream
uses. A single reducer means the UI rendering a replay can be
identical to the live panel, and a UI mounting both
useCritiqueStream and useCritiqueReplay in parallel does not have
to reconcile two state shapes.
speed knob is `paused | instant | live | { intervalMs: N }`.
- instant flushes every event synchronously, useful for opening a
finished run already at its terminal state.
- intervalMs paces dispatches at a fixed cadence so the reviewer
can watch the run unfold.
- paused parses the transcript but holds events back until the
caller advances speed (consumers can drive a scrubber later).
- live is reserved for the future "playback at original cadence"
feature, currently treated as instant; replay timestamps are not
yet persisted with each event so honest pacing requires a
follow-up Phase 7+ task.
gunzip seam handles `.ndjson.gz` transcripts via
DecompressionStream when present; the production fetch path picks
between text and arrayBuffer based on the URL extension. Both seams
are injectable so the unit tests don't need to spin up a real
network or a real gzip pipeline.
Test coverage (8 cases, jsdom env):
- Idle status before any URL is provided.
- speed=instant flushes the full transcript synchronously to
shipped state.
- speed={intervalMs:N} paces with the setTimeout seam, reaching
done after the last tick.
- speed=paused leaves status=playing with no dispatches.
- Empty transcript reports done with state still idle.
- Fetch rejection surfaces an error status with the message.
- Malformed NDJSON lines are skipped; valid events around them
still land.
- .gz transcripts route through the gunzip seam.
Closes the Phase 7 plan tasks 7.1 / 7.2 / 7.3 (reducer + stream +
replay), all on one branch ready for review. Phases 8+ (Theater
components) consume these from this PR.
* fix(web): close payload-override gap + paused-resume bug in Critique Theater hooks (Phase 7 review)
Two P1 fixes from lefarcen's review on PR #1307:
SSE payload override
`sseToPanelEvent` previously spread `data` after the channel-derived
`type`, so a payload-provided `type` could override the channel and
route a `critique.run_started` frame into the reducer as a `ship`
action. Reversed the spread so the channel-derived `type` is
authoritative, and revalidated the resulting object through the
contracts-level `isPanelEvent` predicate before returning. Frames
that fail validation (missing runId, empty runId, unknown type) are
dropped, so a malformed or compromised SSE frame can no longer
dispatch a wrong-shape action into the reducer.
Three new sse.test.ts cases pin the regression: hostile `type:'ship'`
in the payload still resolves to `run_started`, missing runId is
dropped, empty runId is dropped.
Replay pause/resume
`useCritiqueReplay` had one big effect keyed on `transcriptUrl`
only, so flipping `speed` from `paused` to `instant` never re-fired
and the held events sat undispatched. Split into a parse effect
(depends on URL, fetches and stores events in state) and a pace
effect (depends on parsed-events + speed, owns the cursor + timers).
The playback cursor lives in a ref that survives pause/resume
cycles, so flipping `paused` -> `instant` flushes from the current
position rather than restarting (which would double-dispatch
`run_started` and reset the reducer).
Two new useCritiqueReplay.test.tsx cases:
- paused-then-instant transitions from `playing` to `done` and
reaches the shipped terminal phase
- intervalMs paced playback dispatches one event, pauses to drain
the next scheduled timer, flips to instant, and confirms the
remaining transcript drains exactly once (cursor was preserved)
Doc consistency
The earlier source comment in useCritiqueReplay.ts claimed `live`
"paces by recorded timestamps" while the impl used zero-delay
timers and the PR body said it behaves like `instant`. Aligned to
reality: `live` currently behaves like `{ intervalMs: 0 }` (events
drain on successive microtasks via setTimeoutFn) because transcripts
do not yet carry per-event timestamps. Honest timestamp-driven
pacing is queued as a Phase 7+ follow-up.
Validated: pnpm guard, pnpm --filter @open-design/web typecheck,
Theater suite 47/47 (up from 42, +3 sse + 2 replay), full web suite
96 files / 888 tests.
---------
Co-authored-by: Nagendhra <nagendhra405@gmail.com>
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| AGENTS.md | ||