Commit Graph
4 Commits
Author SHA1 Message Date
Mohamed Boudra 6215e08efe Smooth streaming replies with a continuous left-to-right fade (#4859)
* feat(app): reveal streaming text as one continuous fade front

Streaming assistant text is released by word and every character fades in
over the same 150 ms envelope from a start time owned by the message. Start
times never decrease in reading order, so a line paints as a single front
moving left to right, however the text is chunked. Per-word envelopes with an
internal stagger let the next word's first letter overtake the previous word's
last letter, which read as holes and flashing words at the real frame rate;
100 ms frame strips hid it.

Native renderers receive the fade ranges as a prop on a host view wrapping the
root Text, so ranges and text land in the same Fabric mount transaction. The
earlier binding sent ranges through a separate async module call keyed by view
tag and had to reconcile them against the view's text; on a fast phone the UI
thread lags JS by several commits, mounts and calls interleave, and every
reconciliation heuristic guessed wrong. Native code no longer infers newness
or creates start times.

The mock load-test provider now separates cycles with a blank line so a cycle
heading is not appended to the previous paragraph.

* fix(ci): refresh streaming dependencies and isolate E2E setup

* test(app): distinguish fade cleanup from Markdown replacement

* test(app): detect restarted fades during Markdown updates

* docs(app): keep streaming guidance focused on constraints and QA

* test(app): control animation time in Android fade assertions

Fixed wall-clock sleeps let emulator scheduling select the sampled animation frame. Inject the animator time source and drive paint at exact timestamps within one UI-thread operation; production keeps the system clock. Verify the mid-fade sample and the exact cleanup boundary without sleeps, polling, or retries.

* fix(test): compile the desktop renderer before lifecycle checks

The lifecycle fixture treated Metro /status as app readiness. Its first
Settings click therefore spent its 90-second UI budget compiling the cold
bundle. An isolated cold-cache run restricted to one CPU reproduced the
click timeout before the app runtime had loaded.

Reuse the browser suite's existing bundle warmup before launching Electron,
and preserve Metro output in the lifecycle artifacts. The UI timeout,
build-request timeout, lifecycle assertions and product behavior are unchanged.

CI did not preserve Metro output, so its precise startup timing is not
recoverable from the failed run. The retained log makes subsequent startup
failures diagnosable without relying only on an empty renderer text dump.

Validation: three complete lifecycle E2E runs under private Xvfb displays;
existing Metro readiness tests; app typecheck; targeted lint; root format.

* test(file-observer): await burst delivery through native recovery

The deletion phase required every event within 10 seconds, but native
coalescing recovery uses a 30-second safety audit followed by the existing
reconciliation debounce. An idle diagnostic excludes that delayed audit
and therefore cannot act as a completion barrier.

Await the required delivered events instead, preserving every deletion
assertion and the existing overall test watchdog. A real-filesystem test
with controlled native notifications reproduces 95 outstanding paths at
the old deadline and verifies completion when the safety audit delivers
them. No production observer behavior changes.

* test(file-observer): verify burst recovery through public events

The controlled-clock regression constructed a private native backend,
bypassing the interface used by consumers. Consolidate recovery coverage
into the public observer integration test instead: drive real writes,
deletes and directory renames, then await every required public event,
including the 450 surviving files at their renamed paths.

No public capability was added: subscribe callbacks already express
completion. No production behavior or test timeout changes.

* test(app): drive Android fade tests through the native host

The instrumentation suite constructed TailFadeInAnimator directly, advanced
its private clock, and counted FadeInSpan instances. It now mounts the
WordFadeHost that React mounts, feeds it the ranges prop the bridge sends,
and asserts rendered pixels: hidden before a start time, a monotone front
inside and across words, settled frames equal to the baseline, and no frame
callbacks left after settling. Span counts and internal timing state are no
longer asserted.

Choreographer cannot be advanced deterministically from a test and the fade
epoch is the message's wall-clock start time, so the host takes a
WordFadeFrameClock (time plus frame callbacks) as its smallest public seam;
production keeps the Choreographer-backed default.

Fixture text is sized in pixels so every sample stays on one line at any
density; at 420 dpi the 32sp fixture wrapped and the column helper summed
glyphs from the first line.
2026-09-15 03:15:24 +02:00
Mohamed Boudra 2d7733cd65 fix(app): keep incomplete Markdown formatted while streaming (#4742)
* fix(app): keep incomplete Markdown formatted while streaming

Treat unfinished formatting at the growing assistant-message tail as provisional so delimiters and link destinations do not flash while tokens arrive. Completed messages retain ordinary Markdown parsing.

* test(app): express streaming Markdown checks as user actions
2026-09-12 08:49:25 +02:00
Christoph LeiterandClaude Opus 5 3d69b0f458 fix(app): render markdown verbatim instead of substituting characters (#3253)
markdown-it's typographer option rewrites characters after parsing, so
a literal (c) came out as ©. Agents label steps and options (a), (b),
(c) all the time, and an ordinary list rendering as (a), (b), © stops
your eye every time.

The same option turns ... into an ellipsis, --- into an em dash, and
straight quotes into curly ones. Agent output is text people paste
back into a shell or a file, so a curly quote in --name="my repo"
looks correct on screen and fails when pasted. The markdown file
preview had the same problem, showing characters that are not in the
file on disk.

Every in-app markdown surface now goes through one factory in
utils/markdown-parser.ts, which leaves typographer off: agent chat,
plan cards, pull request comment bodies and the file preview. The plan
card was rendering through its library's built-in parser because it
never passed a markdownit prop, and that default has typographer on.

Link behaviour is unchanged. The assistant parser keeps its file://
permission and no other surface gains it, and linkify stays on for
chat and the default renderer and off for plan cards, matching what
each did before.

Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-08-28 08:58:27 +00:00
Mohamed Boudra adf33930b3 Preserve assistant selection formatting when copying (#2808)
* fix(app): preserve formatting when copying assistant selections

Browser selection serialized React Native Web layout nodes instead of the assistant message semantics. Recover semantic markup from renderer-owned metadata and reuse the rich clipboard generator used by Copy turn.

* fix(app): preserve assistant copy semantics

Carry source-only Markdown metadata through the selection copy boundary, unwrap generated code links, and cover ordered starts, hard breaks, and fence languages in Playwright. Refresh the Nix dependency hash for the added clipboard dependency.

* fix(app): preserve partial selection context

Wrap selected fragments with their shared semantic ancestor chain and enable GFM table and strikethrough conversion. Cover partial nested selections and GFM output through the browser clipboard.

* fix(app): preserve copied list and autolink text

Adjust partial ordered-list starts for omitted siblings, strip parser-generated anchors before Markdown reconstruction, and refresh the Nix dependency hash computed by CI.

* fix(app): normalize partial selection context

Normalize cloned ordered lists across block boundaries, degrade incomplete table fragments to selected text, and preserve table alignment provenance through Markdown reconstruction.

* fix(app): escape copied table delimiters

Rendered table cells no longer retain source escape characters. Escape literal pipes during DOM-to-Markdown conversion so copied tables preserve their column structure.

* fix(app): preserve authored link semantics

The rendered link boundary conflated parser-generated links with authored autolinks and discarded authored titles. Carry title semantics into the anchor and unwrap only links with explicit generated provenance.

* fix(app): preserve nested copy structure

Blank-line splitting separated loose nested lists before Markdown rendering, leaving no nesting for clipboard serialization to preserve. Derive protected separators from the Markdown block structure and keep copy metadata independent from monospace surface styling.

* fix(app): preserve selected file links

Assistant messages and rich clipboard HTML must apply the same link validation policy. A shared parser keeps file links semantic in both MIME representations while retaining markdown-it's unsafe-scheme rejection.

* fix(app): preserve partial table content

A selected body row wider than its retained header cannot be represented as GFM and is truncated when rich HTML is regenerated. Treat only those over-wide fragments, plus headerless fragments, as incomplete while preserving valid short rows.
2026-08-03 19:02:31 +08:00