feat: address pause point round 13-14 leftover improvements

[hatayama]

Summary

Addresses the remaining high-value pause-point Round 13–14 leftovers via four squash-merged child PRs on feat/pause-point-r13-leftovers-integration:

1. feat: include collider hierarchy paths in Collision2D capture previews #2061 — feat: include collider hierarchy paths in Collision2D capture previews
2. feat: serialize watch values with the captured-variable preview serializer #2062 — feat: serialize watch values with the captured-variable preview serializer
3. feat: replace unknown-command list with closest-match suggestions #2063 — feat: replace unknown-command list with closest-match suggestions
4. test: cover TriggerResult embedding in expired pause point responses #2064 — test: cover TriggerResult embedding in expired pause point responses

User Impact

• Collision2D captures expose collider hierarchy paths without an extra execute-dynamic-code round-trip.
• Watch values use the same collection preview rules as CapturedVariables, with Truncated + freeze-hint caveats when caps hide changes.
• Unknown-command errors suggest the closest command names instead of listing every command.
• Expired --trigger waits keep a regression cover for embedded TriggerResult.

Local verification

• uloop compile on integration: ErrorCount 0 / WarningCount 0
• scripts/check-go-cli.sh: exit 0
• Focused EditMode suites for the new/changed tests: all passed
• Full EditMode on integration: 3 consecutive runs 2422/2430 with the same single failure:
  • WatchExpressionCompilerTests.CompileAsync_ValidExpressionReturnsCompiledEvaluator
  • Unhandled Error log from the shared Roslyn worker (worker_build_failed, CS0012 missing System.Security.Cryptography.Primitives / HashAlgorithmName)
  • Same test passes alone (--filter-type exact)
• Full EditMode on origin/v3-beta (a404a40a, pre-integration base): also fails the same test once (2412/2420 failed 1). This confirms an existing local environment/shared-worker interaction, not a regression introduced by this round.

Test plan

• Local compile 0/0
• Local scripts/check-go-cli.sh
• Base-branch local full EditMode comparison (origin/v3-beta) — same flake reproduced
• Full repository CI on this PR
• Advisor final LGTM before merge

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Review details

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: 7198dee4-af28-4cdc-b158-9d7ec986a3d2

📥 Commits

Reviewing files that changed from the base of the PR and between a404a40 and e1c86ea.

⛔ Files ignored due to path filters (4)

• Assets/Tests/Editor/SourcePausePointCapture/SourcePausePointCollision2DPreviewBuilderTests.cs.meta is excluded by none and included by none
• Assets/Tests/Editor/WatchHistoryResponseSerializationTests.cs.meta is excluded by none and included by none
• Packages/src/Editor/FirstPartyTools/PausePoint/SourcePausePointCollision2DPreviewBuilder.cs.meta is excluded by none and included by none
• Packages/src/Editor/FirstPartyTools/Watch/UnityCLILoop.FirstPartyTools.Watch.Editor.asmdef is excluded by none and included by none

📒 Files selected for processing (28)

• .agents/skills/uloop-pause-point/SKILL.md
• .agents/skills/uloop-pause-point/references/captured-variables.md
• .agents/skills/uloop-pause-point/references/watch-expressions.md
• .claude/skills/uloop-pause-point/SKILL.md
• .claude/skills/uloop-pause-point/references/captured-variables.md
• .claude/skills/uloop-pause-point/references/watch-expressions.md
• Assets/Tests/Editor/SourcePausePointCapture/SourcePausePointCollision2DPreviewBuilderTests.cs
• Assets/Tests/Editor/WatchHistoryResponseSerializationTests.cs
• Assets/Tests/Editor/WatchResponseContractTests.cs
• Assets/Tests/Editor/WatchValueFreezeHintEvaluatorTests.cs
• Packages/src/Editor/CliOnlyTools~/PausePoint/Skill/SKILL.md
• Packages/src/Editor/CliOnlyTools~/PausePoint/Skill/references/captured-variables.md
• Packages/src/Editor/CliOnlyTools~/PausePoint/Skill/references/watch-expressions.md
• Packages/src/Editor/FirstPartyTools/PausePoint/AssemblyInfo.cs
• Packages/src/Editor/FirstPartyTools/PausePoint/SourcePausePointCollectionPreviewSerializer.cs
• Packages/src/Editor/FirstPartyTools/PausePoint/SourcePausePointCollision2DPreviewBuilder.cs
• Packages/src/Editor/FirstPartyTools/PausePoint/SourcePausePointVariableFormatter.cs
• Packages/src/Editor/FirstPartyTools/Watch/WatchTools.cs
• Packages/src/Editor/FirstPartyTools/Watch/WatchValueFreezeHintEvaluator.cs
• cli/common/errors/command_suggestions.go
• cli/common/errors/command_suggestions_test.go
• cli/common/errors/error_envelope.go
• cli/common/errors/error_envelope_test.go
• cli/dispatcher/shared-inputs-stamp.json
• cli/project-runner/internal/projectrunner/pause_point_trigger_test.go
• cli/project-runner/internal/projectrunner/watch_types.go
• cli/project-runner/shared-inputs-stamp.json
• tests/contracts/watch_response_contract.json

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