Files
orca/src/shared/__fixtures__
Neil 78f434dd85 fix(agents): deliver grok launch drafts on its composer frame (8s → 0.7s) (#13308)
* fix(agents): deliver grok launch drafts on its composer frame

Grok has no --prefill-style flag, so a launch draft (e.g. the issue URL of
a worktree created from a GitHub issue) always goes through Orca's
paste-after-ready path. That path used the default readiness signal: DECSET
2004 plus 1.5s of PTY silence. Grok shimmers its startup logo at ~12fps
until the session opens, so the quiet window never settled and the draft
fell through to the 8s hard timeout before it appeared in the composer.

Gate grok on its own composer glyph instead, anchored on the alternate-screen
switch rather than DECSET 2004: the shell that runs the launch command emits
2004 too, and its prompt may itself be the same glyph (starship, pure), so a
Codex-style anchor could paste into the shell. Grok keeps the quiet window
armed as a fallback because it renders differentially and paints the glyph
once, so a late-attaching scanner would otherwise wait out the hard timeout.

Measured against grok 1.0.0 driving the real scanner over a zsh -> grok PTY:
draft delivery moves from 8003ms to 689ms, with the URL landing unsubmitted
in the composer exactly as before.

* fix(agents): keep grok's quiet-window floor on DECSET 2004

The composer-glyph marker is anchored on the alternate-screen switch, but grok
can render inline (`--no-alt-screen`, `--minimal`, `[ui] screen_mode =
"minimal"`), where 1049h never arrives. Anchoring the quiet-window fallback
there too left those launches with no delivery path at all: readiness never
resolved, and the main-process caller drops the draft when it resolves null —
so the issue URL vanished instead of arriving late.

Give the signal two independent anchors: the marker still waits for the
alt-screen switch (so a starship/pure shell prompt can't trip it), while the
quiet window arms off DECSET 2004 exactly as the default signal does. Inline and
legacy-Windows-console launches keep their pre-existing timing; alt-screen
launches keep the fast marker path.

Verified on grok 1.0.0 over a real zsh -> grok PTY: alt-screen delivers at 687ms
via the marker, inline at 1949ms via the quiet window (the default signal
measures 1861ms on the same launch), URL landing unsubmitted in both. Adds a
recorded inline-mode trace fixture so the no-1049h path stays covered.

* fix(agents): revoke grok's alt-screen anchor when the screen is handed back

The composer-glyph anchor latched forever: once \x1b[?1049h had been seen, any
later `❯` counted as grok's composer. Two ways that pastes the launch draft into
the user's shell instead of into grok:

  - grok enters the alternate screen and then dies before painting a composer;
    the shell prompt that follows is `❯` under starship or pure.
  - a pager or editor started from the user's shell rc enters and leaves the
    alternate screen before grok is ever launched, arming the anchor against the
    shell's own prompt.

Track the anchor in stream order instead of as a latch: \x1b[?1049l revokes it,
re-entering re-arms it, and a marker only counts inside a segment where the
anchor is actually held. The chunk is walked segment by segment so ordering
within a single PTY packet is honored, with a 7-char carry — one short of the
escape sequence — so a split sequence rejoins without re-walking scanned output
into a second transition. Signals with no `markerAnchorEnd` (codex, opencode,
the default) keep their existing latch semantics untouched.

Also makes the trace-replay test model the hard timeout: the real waiters settle
at 8s, so a marker landing after that is not a delivery time.
2026-08-09 00:06:55 -07:00
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