fix: Simulating UI input now fails clearly when PlayMode is paused

[hatayama]

Summary

• simulate-mouse-ui now rejects requests while PlayMode is paused, matching the other input-simulation tools

User Impact

• Before: UI clicks fired while PlayMode was paused executed the immediate event, but follow-up frame updates and coroutines stayed frozen, leaving the scene inconsistent with no warning
• After: the tool fails fast with "PlayMode is paused. Resume PlayMode before simulating UI input." — the same guidance the sibling input tools give

Changes

• SimulateMouseUiUseCase preflight now uses the shared RequireActiveAndNotPaused check with its own paused-action description
• Added a test pinning the exact wire-visible paused message

Verification

• dist/darwin-arm64/uloop compile: 0 errors / 0 warnings
• dist/darwin-arm64/uloop run-tests (regex ".(PlayModeToolPreflight|SimulateMouseUi)."): 10 passed / 0 failed

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 1424272e-c0a3-4bb4-868f-09beeeee9497

📥 Commits

Reviewing files that changed from the base of the PR and between f38e107 and 9cc3a77.

📒 Files selected for processing (2)

• Assets/Tests/Editor/PlayModeToolPreflightServiceTests.cs
• Packages/src/Editor/FirstPartyTools/SimulateMouseUi/SimulateMouseUiUseCase.cs

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📝 Walkthrough

Walkthrough

Adds a PausedActionDescription constant to SimulateMouseUiUseCase and updates its start validation to call RequireActiveAndNotPaused instead of RequireActive, enforcing that the play mode tool is not paused. A corresponding unit test verifies the resulting formatted wire message.

Changes

Pause enforcement for mouse UI simulation

Layer / File(s)	Summary
Add paused description and enforce pause validation Packages/src/Editor/FirstPartyTools/SimulateMouseUi/SimulateMouseUiUseCase.cs	Adds PausedActionDescription constant ("simulating UI input") and switches ValidateSimulationStart to use RequireActiveAndNotPaused instead of RequireActive.
Test paused wire message Assets/Tests/Editor/PlayModeToolPreflightServiceTests.cs	Adds a test asserting FormatPausedMessage returns the expected byte-identical wire message with the UI-input suffix.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Possibly related PRs

• hatayama/unity-cli-loop#1516: Prior changes to the same ValidateSimulationStart validation logic in SimulateMouseUiUseCase.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title directly summarizes the main change: PlayMode-paused UI simulation now fails clearly.
Description check	✅ Passed	The description matches the code changes and verification, including the paused-state behavior and test.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch refactor/c3-simulate-mouse-ui-paused-preflight

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[cubic-dev-ai]

No issues found across 2 files

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