fix: Improve CLI PlayMode reliability for background input simulation

[hatayama]

Refs: 2026-07-12_uloop検証フィードバック改善 実装計画.md#Group 1

Summary

• CLI-started PlayMode keeps advancing while Unity is unfocused (Application.runInBackground).
• Simulated keyboard presses hold until gameplay can observe wasPressedThisFrame (bounded).

Child PRs

• fix: Keep PlayMode advancing while Unity is unfocused during CLI Play #1712 PR 1-1: Keep runInBackground true during CLI Play (restore on exit / domain reload safe)
• fix: Hold simulated key presses until gameplay can observe them #1713 PR 1-2: Hold Press until edge observed (no reinjection)
• PR 1-3: skipped — SoftReset/Disabled events were not observed under real OS unfocus; InputSettings temp scope not introduced. Settings still show canRunInBackground=false with ResetAndDisableNonBackgroundDevices, so 1-3 may return if edge misses persist in game E2E.

User Impact

• Time-dependent E2E between CLI commands no longer depends on Unity staying focused after control-play-mode Play.
• Short key presses are less likely to miss gameplay when frames are tight or focus is lost.

Verification

• Local compile 0/0 and pure EditMode tests green for both child PRs
• Real Editor checks for runInBackground save/restore and Press smoke
• Fable 5 final review LGTM on both child PRs

Protocol

• No protocol version bump (additive response fields / behavior only)

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Review details

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: f19ce6b4-598a-470e-a15d-f2c863462d3c

📥 Commits

Reviewing files that changed from the base of the PR and between a6eff6e and 31a0a37.

⛔ Files ignored due to path filters (6)

• Assets/Tests/Editor/CliPlayModeRunInBackgroundControllerTests.cs.meta is excluded by none and included by none
• Assets/Tests/Editor/PressHoldUntilEdgeLogicTests.cs.meta is excluded by none and included by none
• Packages/src/Editor/FirstPartyTools/Common/InputSystem/PressHoldUntilEdgeLogic.cs.meta is excluded by none and included by none
• Packages/src/Editor/FirstPartyTools/ControlPlayMode/CliPlayModeRunInBackgroundController.cs.meta is excluded by none and included by none
• Packages/src/Editor/FirstPartyTools/ControlPlayMode/CliPlayModeRunInBackgroundService.cs.meta is excluded by none and included by none
• Packages/src/Editor/FirstPartyTools/ControlPlayMode/CliPlayModeRunInBackgroundSessionStore.cs.meta is excluded by none and included by none

📒 Files selected for processing (11)

• Assets/Tests/Editor/CliPlayModeRunInBackgroundControllerTests.cs
• Assets/Tests/Editor/PressHoldUntilEdgeLogicTests.cs
• Packages/src/Editor/FirstPartyTools/Common/InputSystem/InputSystemUpdateHelper.cs
• Packages/src/Editor/FirstPartyTools/Common/InputSystem/PressHoldUntilEdgeLogic.cs
• Packages/src/Editor/FirstPartyTools/ControlPlayMode/CliPlayModeRunInBackgroundController.cs
• Packages/src/Editor/FirstPartyTools/ControlPlayMode/CliPlayModeRunInBackgroundService.cs
• Packages/src/Editor/FirstPartyTools/ControlPlayMode/CliPlayModeRunInBackgroundSessionStore.cs
• Packages/src/Editor/FirstPartyTools/ControlPlayMode/ControlPlayModeServices.cs
• Packages/src/Editor/FirstPartyTools/ControlPlayMode/ControlPlayModeUseCase.cs
• Packages/src/Editor/FirstPartyTools/SimulateKeyboard/KeyboardInputActionExecutor.cs
• Packages/src/Editor/FirstPartyTools/SimulateKeyboard/SimulateKeyboardResponse.cs

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/input-simulation-reliability

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