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orca/mobile/src
Brennan BensonandMerge Sim b0c67eaf88 feat(mobile): port the restructured native-chat turn status and live tool progress (#18761)
* feat(mobile): port the restructured native-chat turn status and live tool progress

Mobile chat had a single static "Agent is working" row and no live tool
activity, while the desktop restructure (#17597, #18705) replaced that with a
per-turn status row and a running-tool label. This brings mobile to parity and
puts the derivation in one place instead of two.

Shared (new, pure, RN-safe — desktop uses them as i18n fallbacks, mobile
directly, matching the native-chat-empty-state pattern):
- `native-chat-turn-status.ts`: duration formatting, label selection, the
  turn-timing state machine, and the active/settled split.
- `native-chat-tool-activity.ts`: command-tool classification, the running-tool
  label descriptor, and running-call selection.

Desktop now consumes both; `NativeChatWorkingStatus`, `NativeChatToolRun` and
`use-native-chat-turn-status` keep their existing behavior and strings.

Mobile gains the "Thinking" / "Working for 12s" / "Worked for 3m 4s" row with a
caret that discloses the turn's tool activity, the pulsing "Running npm test"
row with terminal-vs-wrench glyphs, and desktop's rule that a completed turn's
tool run hides behind the turn caret. The bridge lane is untouched and keeps its
three-dot indicator. Headings, quotes, code, lists and table cells are now
selectable.

Files at their max-lines cap were split rather than bumped: the tool-run subtree,
the prompt card, the session-lane wiring, and the turn-disclosure state each move
to their own module.

* perf(mobile): stop the turn-status rows from re-rendering the whole transcript

A streaming turn re-renders the chat list many times a second. The disclosure
wiring handed every row a fresh status object and a fresh toggle closure on each
of those renders, so `MobileNativeChatMessage`'s memo never held and every
visible row re-rendered per tick — including settled turns that had not changed.

Memoize the status selection on the timing map, and keep one stable toggle
handler per turn (pruned when a turn leaves the transcript) attached only to the
settled rows that can actually disclose anything. Now only the live turn's row
changes identity while the agent works.

* fix(mobile): keep the turn clock running when the optimistic echo is replaced

An accepted send renders as `pending-N` until the transcript echo lands under
its real message id. That flips the active turn key mid-turn, and the timing
reducer treated the new key as a new turn — so a turn that had reached
"Working for 8s" visibly restarted at "Working for 0s".

The reducer now carries the start over when the previous key names a turn that
has since left the transcript, which is exactly the echo-replacement case. A
genuinely new turn (the previous key still in the transcript) and a turn that had
already settled both keep their own clock; both are pinned by tests. Desktop does
not pass the new key and is unaffected.

* fix(mobile): keep the Tools toggle working on settled turns

Hiding a settled turn's tool run behind the turn caret (desktop parity) also
made the composer's global Tools control a no-op on every completed turn: the
run it wanted to expand was not rendered at all. Let that toggle override the
hiding, so it still reveals every run at once the way it did before.

* fix(mobile): re-key the turn timing instead of only carrying its start

The previous fix carried the start forward only while the turn was still
working. When the transcript echo landed after the turn had already settled,
the new key inherited nothing, the settled timing was pruned with the old key,
and the turn's "Worked for N" row disappeared entirely.

Move the timing onto the new key instead, which covers both orderings: an
in-flight turn keeps counting from its original start (and later settles against
it), and an already-settled turn keeps its duration. Both orderings are pinned.

* test(mobile): pin the structured turn-status wiring at the view level

Emulator QA could not reach the structured lane (mobile's Create Tab -> Codex
falls back to a terminal tab when agentSession.createSupport says unsupported),
so the view's own lane wiring had no coverage — the one seam between the shared
turn-timing reducer and the rendered rows.

Assert what the view hands each row: the live user turn gets a status object and
the three-dot indicator is gone on the structured lane; the bridge lane keeps the
indicator and gets no status; a finished turn settles to a numeric duration with
a toggle; and an assistant row never carries a status row of its own.

* fix(mobile): isolate structured chat turn state

* fix(mobile): let the capability RPC actually store what a phone advertises

`runtime.clientCapabilities.update` records the advertised set by assigning
`authenticatedSocket.clientCapabilities`, but the socket handed to the dispatcher
defined that property with a getter only. In strict mode the assignment throws
`TypeError: Cannot set property clientCapabilities ... which has only a getter`,
so the RPC answered `runtime_error` and the set was never stored.

The consequence is not subtle: `supportsStructuredAgentSessions` requires the
capability, so `projectSessionTabAgentStatus` removed every `agent-session` tab
from a phone that had advertised it correctly. A paired phone saw ZERO tabs on a
worktree whose only tab was a structured Codex chat — structured native chat was
unreachable on mobile over this transport, not just missing its new turn UI.

Give the socket a setter that writes through to the channel, which already owns
the set for the connection's lifetime, so later requests on the same socket see
it. Found while trying to capture emulator screenshots of the turn-status port:
two full QA runs reported the new UI "missing" because the phone could only ever
get a bridge/PTY tab.

* fix(mobile): carry the turn key instead of caching a handler in a ref

Builds on the scope-isolation fix: that kept (and extended) a ref that is
written during render — once to memoize a per-turn handler, once to prune dead
turns, once to reset on a scope change. React Doctor's "Ref mutated during
render" is what CI's `check:react-doctor:changed` was failing on (x2), and on
mobile it is a real hazard rather than a style note: react-freeze discards
renders, and a discarded render would leave the cache mutated.

Pass the settled turn's key down the row instead and let it call one stable
handler with it. That preserves both properties the cache was bought for — per
scope isolation, and identity stability so a streaming transcript does not
defeat the row's memo — with no ref writes and no pruning to get wrong. The
scope-keyed expanded set and the 128-turn cap are untouched; their tests move to
the new contract and one now pins handler identity across a re-render.

Note for future changes here: `check:code-quality:changed` does NOT cover this.
CI additionally runs the standalone react-doctor CLI, which has rules the oxlint
plugin config does not enable.

* fix: ship native chat status translations

* test(native-chat): pin the shared copy against the English catalog

The shared constants are desktop's i18n fallback and mobile's actually-rendered
string. If one changes without the other, desktop keeps rendering en.json while
mobile renders the constant — and nothing fails, because a fallback is only used
when the key is missing. That silent divergence is the exact thing the shared
module exists to prevent, and it is now reachable precisely because these strings
are runtime-required rather than statically extracted.

Assert every key in both shared copy objects matches en.json byte for byte, plus
the interpolation placeholders the catalog interpolates on.

---------

Co-authored-by: Merge Sim <sim@local>
2026-09-04 23:31:39 -07:00
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