feat: Unity launch now opens projects with compiler errors by default

[hatayama]

Summary

• Unity launch and restart now open projects with compiler errors ignored by default.
• The explicit compiler-error ignore option was removed from help, completion, and launch guidance.

User Impact

• Users no longer need an extra flag to open or restart a Unity project that currently has compiler errors.
• Bundled launch guidance now notes that this default behavior requires dispatcher 3.0.1-beta.8 or newer.

Changes

• Always pass Unity -ignorecompilererrors when starting a new Unity process.
• Remove -i and --ignore-compiler-errors from the launch CLI surface.
• Bump dispatcher release metadata because launch dispatcher inputs changed.

Verification

• go test ./internal/cli ./internal/automation
• scripts/check-go-cli.sh
• autoreview --mode branch --base origin/v3-beta accepted the dispatcher-gated docs finding; the no-op compatibility suggestion was intentionally rejected for this breaking-change scope.

[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: c993967c-bbe3-4b35-a98d-a4eb6b67b64b

📥 Commits

Reviewing files that changed from the base of the PR and between 6eaeb22 and e584023.

📒 Files selected for processing (9)

• Packages/src/Editor/CliOnlyTools~/Launch/Skill/SKILL.md
• cli/dispatcher-contract.json
• cli/internal/cli/completion_options.go
• cli/internal/cli/completion_test.go
• cli/internal/cli/dispatcher_test.go
• cli/internal/cli/help_test.go
• cli/internal/cli/launch.go
• cli/internal/cli/launch_options.go
• cli/internal/cli/launch_test.go

💤 Files with no reviewable changes (2)

• cli/internal/cli/completion_options.go
• cli/internal/cli/launch_options.go

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📝 Walkthrough

Walkthrough

The -i/--ignore-compiler-errors launch flag is removed from CLI option parsing, completion, and help output; Unity's -ignorecompilererrors argument is now always appended by default. The dispatcher version is bumped to 3.0.1-beta.8. Documentation and tests are updated accordingly.

Changes

Default ignore-compiler-errors behavior

Layer / File(s)	Summary
Launch option struct and parsing cli/internal/cli/launch.go, cli/internal/cli/launch_options.go	Removes ignoreCompilerErrors field from launchOptions, removes its parsing case, and makes buildUnityLaunchArgs unconditionally append -ignorecompilererrors.
Help and completion output cli/internal/cli/launch.go, cli/internal/cli/completion_options.go	Updates printLaunchHelp and native completion options list to drop -i/--ignore-compiler-errors and describe new default behavior.
Dispatcher version bump cli/dispatcher-contract.json	Bumps dispatcherVersion from 3.0.1-beta.7 to 3.0.1-beta.8.
Documentation updates Packages/src/Editor/CliOnlyTools~/Launch/Skill/SKILL.md	Removes -i flag documentation and example, and adds a note on default compiler-error ignoring behavior with an update instruction.
Test updates cli/internal/cli/launch_test.go, cli/internal/cli/completion_test.go, cli/internal/cli/help_test.go, cli/internal/cli/dispatcher_test.go	Updates and adds tests verifying rejection of removed flags, default -ignorecompilererrors inclusion, and absence of the old flag from completion/help output.

Estimated code review effort: 2 (Simple) | ~15 minutes

Possibly related PRs

• hatayama/unity-cli-loop#1146: Both PRs modify uloop launch --help output generation and its tests.
• hatayama/unity-cli-loop#1418: Both PRs bump dispatcherVersion in cli/dispatcher-contract.json.
• hatayama/unity-cli-loop#1423: Both PRs modify -i/--ignore-compiler-errors handling in applyLaunchOption/launchOptions and buildUnityLaunchArgs.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the main change: Unity launches now ignore compiler errors by default.
Description check	✅ Passed	The description is directly related to the changeset and accurately outlines the behavior, docs, and metadata updates.
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 feature/hatayama/launch-ignore-compiler-errors-default

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[cubic-dev-ai]

No issues found across 9 files

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