fix(AiDock): ignore Enter during IME composition

[Brightbong92]

Related to #1362

The dock input submits on any Enter keydown. With an IME, Enter is also
the key that confirms a conversion, so the question is sent while the user is
still composing.

It also leaves text behind. submitQuestion() clears the field with
setSearchQuery(''), but the IME commit is still pending at that point, so the
committed text lands in the now-empty input. In the issue's video the question
useQueryについて解説 is sent and について解説 stays in the box.

Checking event.nativeEvent.isComposing skips that keydown. The other
composers in this repo already do this — RetryComposer, DraftBot,
CommandPalette, ComposerReferences and ConversationSession all check it,
and AiDock was the one that did not.

Checks

Instrumented the handler and tested on macOS.

• Japanese IME, before: Enter on a conversion candidate logs one keydown with
  isComposing: true, keyCode: 229, and submits usequery ミニと何かいい
  while leaving ミニと何かい in the input.
• Japanese IME, after: the same Enter confirms the conversion and submits
  nothing. A second Enter sends the question.
• English input is unchanged — no composition is active, so Enter submits
  immediately.
• pnpm test:tsc and pnpm lint:code pass.

This does not cover macOS Korean. A single Enter there produces two keydowns,
and the second is no longer composing, so it passes the guard and still
submits:

keydown Enter  isComposing=true   keyCode=229
compositionend
keydown Enter  isComposing=false  keyCode=13

Handling that needs a check right after compositionend, which would touch
the five files above as well, so I left it out of this PR. Can open a separate
issue if that is preferred.

Summary by CodeRabbit

• Bug Fixes
  • Pressing Enter while composing text with an input method editor no longer submits the search question.

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[coderabbitai]

📝 Walkthrough

The AI Dock input now checks IME composition when Enter is pressed. It does not prevent the default action or submit the question while composition is active.

Changes: AI Dock input

Layer / File(s)	Summary
Guard Enter submission during composition src/components/AiDock.tsx	The Enter-key handler checks event.nativeEvent.isComposing before the existing submission path. During composition, it does not prevent the default action or submit the question.

Priority: ➖ Normal

Estimated code review effort: 2 (Simple) | ~5 minutes

Change: Bug fix · Severity of issue fixed: Medium

Suggested reviewers: ladybluenotes

Merge Risk: 🔵 Low · up to 39392

On a narrow IME input path, the key used to confirm a conversion can submit the unfinished question. This is a limited, recoverable interaction issue, but should be fixed before relying on the AI Dock for affected input methods.

Pre-merge checks: 3 · 2

Failed checks: 2 warnings

Check name	Status	Explanation	Resolution
Linked Issues check		Issue [#1362] covers Japanese, Chinese, and Korean IME conversion. The change correctly skips submission when event.nativeEvent.isComposing is true. The PR description also confirms that macOS Korea…	Prevent the follow-up Enter keydown generated after IME compositionend from submitting in AiDock. Add automated coverage for the Japanese, Chinese, and Korean conversion flows.
Docstring Coverage		Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 1 functions across 1 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

Passed checks: 3 passed

Check name	Status	Explanation
Out of Scope Changes check		The only change modifies the AiDock Enter-key submission guard. It directly supports issue [#1362] and preserves submission for non-composing input. No unrelated change is present in the reviewed di…
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly and concisely describes the main change: preventing Enter from submitting AiDock during IME composition.

Full details: Linked Issues check

Explanation

Issue [#1362] covers Japanese, Chinese, and Korean IME conversion. The change correctly skips submission when event.nativeEvent.isComposing is true. The PR description also confirms that macOS Korean input emits a second non-composing Enter keydown after compositionend, and that this keydown still submits the question. Therefore the Korean requirement remains unmet.

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Actionable comments posted: 1

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Inline comments:
Review comments at @src/components/AiDock.tsx:
- Line 1992: Update the Enter key handler in AiDock so the
composition-confirming Enter does not call submitQuestion when isComposing is
already false; also check the documented keyCode 229 fallback or track
composition state while preserving normal Enter submission.

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• src/components/AiDock.tsx

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[tannerlinsley]

Thanks for documenting the Korean sequence too. The composition guard makes sense, but the second Enter event in that sequence still passes it, so this doesn't fully resolve #1362 yet.

Let's keep that issue open and use Related to #1362 instead of Fixes #1362 while the gap remains. We don't need to expand this PR into all five composers. A focused AiDock fix should cover composition completion without swallowing the next deliberate Enter, with Japanese, Chinese, Korean and ordinary input checked. Please keep the distinction between native IME testing and synthetic event tests in the results.

[Brightbong92]

Thanks for the feedback!
I'll keep the changes scoped to AiDock, update the issue reference to Related to #1362, and address the follow-up Enter event after compositionend.
I'll also distinguish native IME testing from synthetic event tests in the results.