Commit Graph
6 Commits
Author SHA1 Message Date
8d424e039e Reduce rendering cost in long chats (#7052)
* perf(app): stop re-walking the timeline on every streamed delta

Every coalesced delta rebuilds the stream render model with the same
tail. The model re-sliced the tail at the history-window start on every
call, so the rendered tail was a fresh array per delta and every WeakMap
keyed on it (ordering, history split, turn timing, the layout history
cache, row revision) missed each time. Cache the slice by tail identity
and window start.

Turn timing then still walked the whole rendered tail per delta and
allocated a new assistant-timing Map, which the layout memo depends on.
Split the walk: the tail is walked once per tail identity and the head is
walked from the carried open turn per delta. The Map keeps its identity
while the head adds no completed turn.

Adds identity-contract tests and a vitest bench for the per-delta
pipeline. 200 deltas over a 2,000-item timeline, mean per run:
default mounted window 5.68ms -> 2.82ms, history fully revealed
16.95ms -> 1.81ms.

Fixes #4816

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* perf(app): keep the stream view's per-delta work bounded by the head

The chat outline concatenated tail and head, reduced over the result in
the render body, and rebuilt jumpToPrompt on every delta even when the
outline was disabled, which is every native viewport. Memoize the tail's
contribution, scan only the head per delta, do nothing while disabled,
make jumpToPrompt a stable event so the rail's memo holds, and republish
the active prompt only when the index or reading position changes.

The view built a Set of every mounted id plus the live head per delta for
the outline's pending-jump check; key it on mounted history only and
treat live head rows as always mounted. Split plugin projection so a head
change does not re-project the tail, memoize the history-window boundary
lookup, and read the turn presentation's submission flag with some()
instead of allocating a filtered array.

Refs #4816

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* test(app): confirm full history before measuring streaming

---------

Co-authored-by: Ivan Malison <IvanMalison@gmail.com>
Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>
Co-authored-by: paseo-bot[bot] <266920839+paseo-bot[bot]@users.noreply.github.com>
2026-10-16 01:15:40 +02:00
Mohamed Boudra e34aea206e feat(plugins): add live timeline rows and client slash commands
Plugins can transform live timeline source items at render time, append durable plugin rows from daemon handlers, and register client-only slash commands in the composer.

Related to #3940 and #3952.
2026-09-02 13:12:09 +02:00
Mohamed Boudra ba54575ab7 Show completion times for hidden-prompt turns (#4170)
System-injected prompts have canonical turns but no visible user row, so completed timing was discarded despite an exact end timestamp. Preserve completion metadata with an explicitly unknown duration so the footer can show the truthful timestamp.
2026-09-01 23:24:20 +02:00
Mohamed Boudra 2a0a0ff656 Keep mobile workspace switching responsive with long chats (#3610)
* perf(app): bound native workspace mount work

Native workspace switches retained inactive React trees and mounted large chat histories in aggressive list batches, making Hermes and Fabric work scale with prior usage.

Retain only the active native workspace, reveal a shared turn-aligned history window locally before daemon pagination, preserve desktop retention semantics, and pace native list mounting.

* test(app): cover bounded history journeys

Exercise local history reveal and hidden outline jumps through the production browser viewport while preserving held-page pagination and scroll anchoring.

* fix(app): reveal fetched outline targets

A bounded merged jump could load its target before the mounted history window, leaving the pending jump unable to scroll. Reveal fetched hidden targets through the existing history-window capability, then scroll once they mount.

* test(app): follow anchored history reveals

History-start helpers could stop at a transient edge before local window expansion restored the content anchor. Retry the real wheel or keyboard action after geometry settles until the timeline remains at history start.

* test(app): wait for history anchor release
2026-08-20 20:52:12 +02:00
Mohamed Boudra 8021d2b6c9 Keep agent timelines stable from submission through resume (#2718)
* 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 6adcf7e5b0.

* fix(timeline): settle missed submission acknowledgements
2026-08-01 14:13:47 +02:00
Mohamed Boudra 62780448dc refactor(app): organize agent stream rendering 2026-05-25 12:15:20 +07:00