A host can refuse a timeline read for as long as it likes. Codex does
this whenever another writer holds the thread: every catch-up fails with
"already has an active writer" until the other session lets go. The app
retried that on a fixed 1s timer with no ceiling, so an idle window sat
there issuing a request and logging a warning every second, indefinitely.
The refusal is normal lifecycle; the traffic was the bug.
Catch-up and subscription retries now double from 1s to a 30s ceiling,
resetting on success, reconnect, delivery-mode change, and visibility
change so recovery stays immediate once the condition clears.
Backing off alone would leave the user waiting up to 30s with no way in,
so both failure surfaces get a retry they can press. Background retries
stay silent; a retry the user asked for is a fallible user action and
owns its pending state, so "retrying" is a status the sync model
publishes rather than a React boolean.
The blocking "Failed to load agent" screen was the worse half: its load
effect self-gates on the error state, so a refused first resume was
terminal until the user navigated away. Its retry resets the state to
idle, which re-arms the effect.
* feat(agents): add active-turn steering
Let users choose whether an immediate prompt interrupts or joins the active turn. The daemon owns exact-turn admission, provider delivery, safe fallback, and canonical timeline identity while queueing remains client-side.
* fix(agents): stabilize steering history and replay QA
* fix(agents): preserve steering timeline order
* fix(agents): reconcile resumed provider history
* fix(agents): serialize steering with cancellation
* test(agents): prove Claude multi-tool steering
* test(agents): force explicit history hydration
* fix(agents): flush output before steer admission
* perf(timeline): resume cached history from its exact range
Warm launches were repainting cached history and then downloading the same bounded tail to rediscover that nothing changed. Persist synchronization authority only when the complete current canonical window can be encoded losslessly; otherwise retain the existing display-only fallback.
* test(timeline): hide replica setup behind E2E helper
* fix(timeline): bound persisted resume overflow
* test(timeline): cover workspace eviction catch-up order
* test(timeline): read persisted range from IndexedDB
* feat(agents): surface live task progress
Keep current task state above the composer and turn task snapshots into semantic timeline activity. Normalize provider task protocols while preserving genuine plan flows.
* fix(agents): admit tasks through stream sequencing
* test(agents): expect normalized task status
Make provider catalogs compact and content-addressed so repeat launches can reuse the persisted snapshot instead of transferring it again. Remove eager global catalog loading and the stopped-agent defensive tail fetch, while keeping sequence-gap and reconnect recovery as the correctness paths. Add an opt-in production-ID Android profiling build for local startup traces.
Live Markdown block promotion discarded timeline positions, so merging a disjoint history window could sort the final block ahead of earlier blocks. Preserve the source position on every promoted block so timeline merges keep the response intact.
Replace time-based subscription expiry with a bounded hot set so switching among a small working set and backgrounding the app do not force stale timeline catch-up. Visible chats always retain priority, while disconnect and legacy delivery preserve their existing authoritative boundaries.
* fix(app): keep timeline pagination duplicate-free
Older daemons page projected history by canonical sequence ranges, so one projected block can appear in adjacent responses. Accept each block on the page containing its projection anchor while still advancing across empty projected pages.\n\nProjected siblings can share a provider message ID, so render identity also includes the timeline cursor instead of collapsing distinct blocks onto one layout row.
* fix(e2e): preserve isolated daemon launch contract
Keep the source-daemon spawn path recognizable to the repository launch-contract check while selecting the built supervisor only for published package fixtures.
* fix(app): preserve stable timeline item identity
* Reapply: Stop completed turns from appearing stuck (#2484)
* Reapply: Keep older chat history and image previews stable (#2490)
* Lock timeline layout stability with user-driven specs
Two reds reproduce the reported jank:
- new agent, first prompt: the row paints at top=100 then jumps to 144 through
authoritative hydration, because the draft tab and the agent panel each render
their own AgentStreamView for the same logical row.
- long loaded timeline, submit: scrollHeight collapses 10793 -> 9111 mid-turn,
because splitOrderedTail reclassifies measured rows into the virtualized segment
where the virtualizer falls back to estimateStreamItemHeight.
Also restores centered timeline rows: the pagination anchor wrapper introduced in
#2490 was a plain block div, which broke alignSelf: center.
* Measure the turn footer blink from when the footer appears
Bounding the window at the prompt row conflated two things: the footer arriving a
frame after the row, and the footer leaving the layout and coming back. Bounded from
the footer's first frame, the blink still reproduces, so the footer-ownership race is
real rather than a sampling artifact.
* Rename the shadowed prompt row binding in the frame recorder
* fix(desktop): allow concurrent worktree dev instances
Desktop terminals can inherit another instance's profile path and debugging flags. Scope the profile to the current dev root and select an available debugging port so instances do not share global runtime state.
* fix(desktop): expose development providers in dev builds
Desktop-managed daemons inherited no Paseo runtime mode, so dev builds constructed the production provider registry. Mark unpackaged internal launches as development while continuing to force packaged launches to production.
* fix(timeline): stabilize optimistic turn layout
Keep initial history loading dormant until user intent and preserve active-turn layout across delayed transport updates. Add painted-frame coverage for optimistic timeline transitions.
* fix(timeline): preserve optimistic prompts through hydration
Canonical replacement relied on a transport submission record that can settle before a provider echoes the user row. Keep presentation continuity owned by the unreconciled row while destructive history replacement remains governed by active transactions.
* fix(timeline): make submitted prompts canonical
Submission settlement previously depended on status updates that could arrive after the optimistic row. Persist every accepted prompt in the canonical timeline and keep the footer active until RPC and canonical acknowledgement converge.
* fix(timeline): stop older history pages repeating entries
Backward pagination counted source sequence rows, so page boundaries inside a merged projected item could return that item repeatedly. Count projected entries and advance from their display anchors instead, with server and browser regressions covering the contract.
* fix(timeline): resume agents from the latest history
Use a bounded tail probe on resume so long background runs appear atomically instead of replaying every missed page. Preserve unchanged views, reconcile local/live rows, and keep skipped history reachable through backward pagination.
* fix(timeline): reconcile turn state after missed updates
Turn completion events can be missed while an agent timeline is unsubscribed, leaving footer activity stale even after the directory reports idle. Reconcile the single-owned turn lifecycle from authoritative resume snapshots while preserving newer live evidence.
* test(timeline): cover running state across refresh
Protect the hydration boundary where directory state must restore consistent tab, composer, and footer activity. Expose the running indicator semantically so the regression checks user-visible state instead of spinner implementation details.
* fix(timeline): keep history loading geometry stable
Reserve a fixed history-start gutter regardless of pagination state so showing or hiding the loader cannot shift timeline content.
* fix(timeline): keep turn activity coherent
Derive footer, tab, and composer activity from one lifecycle and submission projection. Idle directory transitions now request an authoritative resume so missed terminal events converge without treating directory delivery order as turn authority.
* fix(tests): align checks with runtime boundaries
* fix(desktop): stop dev app surviving its terminal
Electron was detached from the desktop runner, allowing it to outlive a stopped workspace terminal with broken output pipes and retain the single-instance lock. Keep Electron owned by the runner and preserve explicit process-group cleanup for detached child trees.
* fix(timeline): preserve activity through turn handoff
Correlate lifecycle events and snapshots with daemon-owned turn identity, and keep optimistic submissions active until their canonical row arrives. This prevents stale updates and RPC timing from exposing a false idle state.
* refactor(timeline): remove submission timing state
* fix(timeline): restore prompt identity on resume
* fix(timeline): exclude attachments from canonical prompt text
Structured provider prompts can include hidden history attachments before the user's text. Persist only plain prompt blocks so authoritative user messages match what the composer displayed while provider input remains unchanged.
* refactor(agent): remove unused pending-run message identity
* fix(desktop): let Chromium allocate the debugging port
* refactor(agent): remove impossible finalized-turn tracking
* fix(timeline): load history after keyboard scrolling
Treat observed upward displacement as user intent so keyboard and scrollbar navigation can wake dormant pagination.
* test(server): preserve accepted turn stream order
The manager-owned accepted turn boundary intentionally precedes coalesced output. Assert that lifecycle event explicitly while retaining the timeline-before-terminal ordering contract.
* test(app): scope sidebar fixtures by identity
Shared E2E daemon state may contain unrelated projects. Keep stale-route coverage tied to its named missing project and drag only the two rows seeded by the reorder spec.
* fix(timeline): gate prompt revisions by client capability
* fix(timeline): finalize canonical prompt delivery
Treat provider identity as a single stored-row transition so legacy clients receive one deliverable canonical prompt. Release identity-pending rows before later foreground output or the current terminal while preserving stale-turn isolation.
* fix(server): preserve legacy prompt pagination
* fix(timeline): keep assistant block identity stable
Assign canonical block IDs during live promotion so terminal finalization cannot remount image-bearing rows.
* fix(timeline): apply covered revisions during resume append
Run the exact canonical revision pass before overlapping resume pages append newer rows, while leaving cursor advancement to the incremental path.
* fix(server): preserve queued agent transitions
Project each queued live snapshot before awaiting stored metadata so later lifecycle state cannot overwrite an earlier transition.
* fix(server): snapshot queued agent updates
Capture each live agent payload before it enters the per-agent queue so shared nested state cannot change while an earlier storage read is pending.
* docs(app): date agent turn compatibility cleanup
* refactor(timeline): mint submitted prompt identity at acceptance
Canonical prompt rows now keep one immutable wire identity while provider identity remains internal for rewind translation. This removes the unreleased same-sequence revision and legacy projection contract.
* refactor(app): remove prompt revision reconciliation
Submitted prompt rows are immutable on the wire, so resume and live reducers no longer need to apply already-covered same-sequence updates.
* test(app): cover submitted prompt rewind roundtrip
* docs(timeline): describe immutable submitted prompt identity
Provider echoes now enrich daemon-internal identity only; wire rows keep their acceptance-time identity and rewind performs the provider translation.
* test(server): validate mock rewind targets
Reject unknown provider message IDs so app rewind coverage exercises wire-to-provider identity translation.
* fix(server): validate rewind before interrupting
* fix(server): omit rewind identity for daemon prompts
* test(app): guard rewind eligibility and rejection
* fix(server): preserve prompt identity across hydration
* refactor(timeline): remove stale revision remnants
* Revert "fix(server): preserve prompt identity across hydration"
This reverts commit 6adcf7e5b0bc8601761af59b461a746cb5e395fa.
* fix(timeline): settle missed submission acknowledgements
* Add npm release track invariant and beta dist-tag procedure
* Revert "Keep older chat history and image previews stable (#2490)"
The timeline optimistic/pagination rework needs more work than main releases can wait for. Reverted together with #2484; both are reapplied on integration/timeline-optimistic-rework.
* Revert "Stop completed turns from appearing stuck (#2484)"
See the #2490 revert. #2490 built on this submission-authority change, so the two revert and reapply as a pair.
* fix(app): keep timeline history and previews stable
Treat persisted timeline replicas as display-only so authoritative pagination always comes from the daemon. Require renewed user intent between older-history pages unless the viewport genuinely remains at the history edge.
Model assistant image acquisition as loading, loaded, or failed so recreating a preview URL cannot be rendered as an error.
* fix(app): keep file image previews current
* fix(app): stabilize history pagination edges
* fix(app): recover transient timeline loads
* fix(app): retain assistant image previews
* Stabilize history pagination lifecycle
* Stabilize history settlement and image previews
* Retry file images after reconnect
* Keep active previews and pagination requests alive
* Replace image hook tests with typed ports
* Integrate timeline hydration with submission authority
* Harden pre-hydration timeline reconciliation
* Make rewind E2E use real scroll intent
* Preserve live timeline state through hydration
* Keep mounted image attachments retained
* Protect preview persistence and lifecycle hydration
* Preserve idless live assistant continuations
* Preserve timeline rows across delayed hydration
* test(app): cover real assistant image files
* Preserve assistant tool ordering during hydration
* fix(app): stop completed turns from appearing stuck
Turn activity was inferred from a user-message row flag, so a stale duplicate row could keep the working footer active after the turn ended. Track submission lifecycle separately and route every send path through the shared submission flow.
* fix(app): guard pending message identity
* test(app): measure submission layout independent of scroll
* fix(app): keep submitted messages consistent through reconnects
Track each in-flight send until its own RPC establishes acceptance, and keep canonical timeline placement authoritative. Restore legacy cached rewind IDs during cache deserialization.
* fix(app): close canonical submission races
* test(app): cover canonical submission races in browser
* fix(app): keep replacement submissions authoritative
Keep current pending rows out of legacy cache migration and leave ambiguous terminal lifecycle events to the daemon snapshot. This prevents fabricated rewind identities and stale completion events from marking replacement turns idle.
* fix(app): keep submitted messages stable across sync
Give submission transport and canonical timeline ingestion separate authority. Preserve every unresolved local send across replacement, reconcile provider identity once, and bridge RPC acceptance to authoritative running state without deriving lifecycle from timeline rows.
* fix(app): settle submissions in either acknowledgement order
Complete submission transactions when RPC and provider acknowledgement arrive in either order. Cache only transaction-owned local rows as transient data, preserve canonical ID-less prompts, and invalidate ambiguous legacy display caches instead of inventing provider identity.
* fix(app): keep agent visible during history handoff
Running and terminal updates could clear create continuity before the initial authoritative timeline arrived, leaving a streaming agent behind the loading screen. End the handoff only when authoritative history is applied.
* fix(app): settle attachment-only submissions
Canonical providers can acknowledge image-only prompts with empty text. Reconcile those events by client identity without rendering a blank canonical row.
* fix(agent): settle out-of-band message submissions
Accepted commands that do not allocate a foreground turn previously had no canonical user acknowledgement. Record the command before its handler runs so submission state and reconnect history converge through the normal timeline producer.
* fix(app): settle out-of-band submissions compatibly
* fix(app): preserve canonical prompt order
* test(app): keep workspace status check timing-independent
The workspace-status scenario asserted footer settlement before initial agent creation had necessarily completed. The dedicated draft-handoff coverage owns that lifecycle contract.
Render optimistic turn feedback before host acknowledgement and roll it back on rejection. Reconcile iOS keyboard offsets from the native transition end event so JS contention cannot leave the composer displaced.
Timeline catch-up treated the first unmatched optimistic prompt as an insertion boundary, which could move later acknowledged prompts behind assistant output. Apply canonical entries directly and preserve submission slots during replacement.
Canonical provider message IDs and optimistic client IDs occupy different namespaces. Preserve both identities for deterministic reconciliation while retaining a dated content fallback for older daemon timelines.
* fix(app): keep focused agent timelines live
Window focus was conflated with app visibility, so switching OS windows could remove the selected timeline subscription. Separate those signals, grace every visibility-driven removal, and cover retained history until authoritative catch-up completes.
* fix(app): keep timeline catch-up failures non-blocking
* fix(app): surface timeline catch-up failures
* fix(app): preserve file preview refocus
* fix(app): preserve optimistic catch-up flow
* feat(sync): keep live data scoped and current
Only viewed chats receive live timeline rows, while directory state now uses one subscribed bootstrap followed by ordered deltas. Legacy clients and daemons retain their existing behavior through centralized compatibility gates.
* fix(sync): preserve selective delivery boundaries
Keep selective timeline capability app-owned, union viewed sets across shared sockets, and reconcile directory side effects from accepted state. Visibility and archive suppression now follow their existing authoritative boundaries.
* test(app): align browser fixtures with runtime contracts
* fix(sync): preserve mixed-client delivery guarantees
* fix(sync): finish paged history before advancing
* fix(sync): replay live deltas after refresh failures
* test(server): model socket capability lookup
* test(app): use platform shortcut for split-pane coverage
* fix(app): keep hidden timelines dormant
* test(app): normalize split-pane shortcut setup
* fix(app): preserve sync state across retries
* fix(app): preserve background sync state across races
* fix directory bootstrap reconciliation edge cases
* fix selective timeline compatibility races
* fix superseded directory sync races
* fix(sync): centralize directory replica ordering
Own agent and workspace refresh transactions in HostRuntime so reconnect epochs, buffered updates, and lifecycle invalidation share one ordering boundary. Route timeline metadata and mixed-capability stream delivery through their authoritative runtime sources.
* fix(app): keep timeline requests runtime-scoped
* fix(app): close directory bootstrap races
* fix(chat): allow failed turns to be forked
Failed turns can end in Paseo-generated timeline items without provider
message IDs. Anchor forks to canonical timeline positions while retaining
legacy boundaries for compatibility.
Place the fork summary before the new prompt and delimit it as structured
chat history.
* fix(chat): tighten fork boundary handling
* fix(chat): keep attachments visible after creating agents
Agent creation could receive the canonical user message before the client knew the new agent ID. Hand the local rich presentation to that message and preserve it through later timeline hydration.
* refactor(chat): clarify local message presentation naming
* fix(chat): clear pending state after message handoff
* fix(app): preserve assistant stream order
Assistant head flushing only considered item kind, so a new identified assistant message could promote ahead of earlier live rows. Flush the live head when assistant message ids diverge so live rows remain an ordered suffix.
* refactor(app): reuse assistant message id helper
* Extract client SDK package
* Polish SDK client identity defaults
* Build client before dependent CI jobs
* Restore daemon client server export
* Extract protocol and client SDK packages
* Fix provider override schema validation
* Fix app test daemon client imports
* Simplify workspace build targets
* Fix CLI test server build bootstrap
* Run SDK package tests in CI
* Fix rebase package split drift
* Restore lockfile registry metadata
* Update SDK config test for prompt default
* Move terminal stream router test to client package
* Fix rebase drift for protocol imports
* Fix SDK agent capability fixture
* Restore legacy server client exports
* Fix server export compatibility test
* Advertise custom mode icon client capability
* Remove server daemon-client exports
* Format rebased mode control import
* Fix rebase drift for protocol imports
Files added by upstream PRs (#893, #1147, #1154) referenced the pre-split
shared/ paths that this branch moves into @getpaseo/protocol. Redirect
those imports to the protocol package so typecheck stays green after the
rebase.
Move optimistic user message reconciliation into the stream reducers and keep draft-created agents in a handoff lifecycle until authoritative history lands.
* Add Pi extension-launch plumbing for in-process tree primitives
* Add Rewind controls for agent sessions
* Preserve SDK checkpoint env var so Claude file rewind works
The SDK injects CLAUDE_CODE_ENABLE_SDK_FILE_CHECKPOINTING=true when file checkpointing is enabled. The earlier parent-env stripping from c4782ec71c was too broad and removed that child flag along with real parent-session markers.
Keep stripping parent markers, but preserve the checkpoint flag so the SDK rewind path can run directly. With that boundary fixed, the JSONL file-rewind fallback is no longer needed.
* Update OpenCode history replay tests for rewind state
* Show Rewind actions in an adaptive sheet
* Fix rewind semantics across providers
* Refactor Pi IDs through extension capture
* Restore user message to composer after rewind
* Fix Claude rewind tool result mapping
* Fix Claude rewind session switch roundtrip
* Fix rewind and optimistic message regressions
* Tighten rewind test discipline
* Fix OpenCode optimistic message reconciliation
* Reconcile optimistic user messages by marker
* Reorder user message actions
* Unify provider user message contract
* Add Claude rewind flow Playwright contract
* Add Codex rewind flow Playwright contract
* Add OpenCode rewind flow Playwright contract
* Add Pi rewind flow Playwright contract
* Remove real-provider rewind Playwright contracts
* Gate real-provider rewind specs from CI Playwright
@fireblue diagnosed the production failure mode: long canonical timeline catch-up could exceed the relay WebSocket frame cap, close with 1009, and send clients into a reconnect loop. Their seatbelt fix also removed the `limit: 0` footgun that let app callers request an unbounded frame.
This maintainer pass keeps that diagnosis and redirects the UX around bounded projected pages:
- initial agent load fetches the latest canonical tail
- app resume/reconnect re-fetches the latest tail instead of chaining after-cursor pages
- in-stream gaps still use bounded after-cursor catch-up
- older history loads explicitly when the user scrolls to the oldest edge
- shared page size is TIMELINE_FETCH_PAGE_SIZE = 100 projected timeline items, matching the daemon's canonical projection semantics rather than raw delta chunks
Original diagnosis and fix by @fireblue.
Co-authored-by: Mohamed Boudra <boudra.moha@gmail.com>
Mohamed Boudra