fix: Shrink the project runner pin schema to two fields

[hatayama]

Summary

Part 2 of the version-gate consolidation (G4), following #1501. The pin carried four fields no runtime code reads: requiredProtocolVersion (the IPC protocol is checked on the wire, never via the pin), packageName, packageVersion, and schemaVersion. Dead fields invite drift, and each one is an extra release-please stamp or guard to keep consistent. The pin now declares only the two values the dispatcher actually consumes:

{
  "projectRunnerVersion": "...",
  "minimumDispatcherVersion": "..."
}

• Drop the removed fields from the dispatcher pin struct, its validation, and the release-automation guard, updating fixtures accordingly
• Remove the two $.packageVersion pin stamps from release-please-config.json
• Keep the two-pin identity check and the pin-to-contract projectRunnerVersion consistency check

Compatibility note

Dispatchers older than this change reject a pin without schemaVersion, so they need a manual uloop update once a package ships the new pin. This one-time format break is accepted for the pre-release line; from here on the pin format evolves additively only (fields are never deleted or renamed), because the forced-update instruction travels inside the pin.

Validation

• scripts/check-go-cli.sh, scripts/test-release-please-config.sh, scripts/test-stamp-release-inputs.sh
• Both pin files remain byte-identical
• uloop compile: 0 errors / 0 warnings; CliPinSynchronizerTests: 6/6 passed

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Review details

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: b36ad70e-c938-453e-95b0-46dd19dd82ab

📥 Commits

Reviewing files that changed from the base of the PR and between 446742d and 2f3f4a9.

📒 Files selected for processing (2)

• Assets/Tests/Editor/CliPinSynchronizerTests.cs
• scripts/test-release-please-config.sh

📝 Walkthrough

Walkthrough

This PR simplifies the project-runner pin JSON schema across Unity assets and Go CLI code, removing schemaVersion, packageName, packageVersion, and requiredProtocolVersion fields while retaining only projectRunnerVersion and minimumDispatcherVersion. Corresponding parsing structs, validation logic, tests, and release-please configuration/scripts are updated to match.

Changes

Project-runner Pin Schema Simplification

Layer / File(s)	Summary
Pin JSON fixture files .uloop/project-runner-pin.json, Packages/src/project-runner-pin.json	Pin files truncated so minimumDispatcherVersion is the final property, removing packageName, packageVersion, requiredProtocolVersion, and schemaVersion.
Dispatcher pin struct and loader validation cli/dispatcher/internal/dispatcher/dispatcher_pin.go, cli/dispatcher/internal/dispatcher/dispatcher_test.go	dispatcherPin struct retains only projectRunnerVersion; loader no longer checks schemaVersion == 0; tests write minimal pin JSON accordingly.
Release automation minimum version guard cli/release-automation/internal/automation/dispatcher_minimum_version_guard.go, dispatcher_minimum_version_guard_test.go	dispatcherMinimumVersionCliPin struct reduced to ProjectRunnerVersion; test helper generates matching minimal JSON.
Protocol version consistency contract tests cli/common/clicontract/protocol_version_consistency_test.go	Removes unityPackageManifest type and manifest path constant; unityPackageCliPin reduced; test validates only projectRunnerVersion alignment.
Unity CliPinSynchronizer tests Assets/Tests/Editor/CliPinSynchronizerTests.cs	Test fixtures and assertions switched from schemaVersion payloads to projectRunnerVersion payloads for copy, skip-write, and update scenarios.
Release-please config and scripts release-please-config.json, scripts/test-release-please-config.sh, scripts/test-sync-release-please-package-releases.sh	extra-files for Packages/src now sources version from package.json instead of pin files; script assertions and fixtures updated accordingly.

Estimated code review effort: 2 (Simple) | ~12 minutes

Possibly related PRs

• hatayama/unity-cli-loop#1412: Both PRs revolve around minimumDispatcherVersion pin/contract compatibility across dispatcher pin JSON validation and automation guard logic.
• hatayama/unity-cli-loop#1427: Both PRs adjust Unity/project-runner pin handling around the projectRunnerVersion contract and dispatcher pin JSON parsing.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately summarizes the main change: reducing the project runner pin to two fields.
Description check	✅ Passed	The description is directly related to the change and matches the updated pin schema and validation work.
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 unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch refactor/shrink-project-runner-pin-schema

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@scripts/test-release-please-config.sh`:
- Line 131: The jq assertion in test_release_please_config is using invalid
syntax for accessing the extra-files array, so the filter fails before length is
checked. Update the assert_json_value call in
scripts/test-release-please-config.sh to use a valid jq path for the
Packages/src package entry and its extra-files field, keeping the existing
length check intact.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 14e0bbb0-f989-4e30-83f5-188ef5c3b8df

📥 Commits

Reviewing files that changed from the base of the PR and between 2012eb8 and 446742d.

📒 Files selected for processing (11)

• .uloop/project-runner-pin.json
• Assets/Tests/Editor/CliPinSynchronizerTests.cs
• Packages/src/project-runner-pin.json
• cli/common/clicontract/protocol_version_consistency_test.go
• cli/dispatcher/internal/dispatcher/dispatcher_pin.go
• cli/dispatcher/internal/dispatcher/dispatcher_test.go
• cli/release-automation/internal/automation/dispatcher_minimum_version_guard.go
• cli/release-automation/internal/automation/dispatcher_minimum_version_guard_test.go
• release-please-config.json
• scripts/test-release-please-config.sh
• scripts/test-sync-release-please-package-releases.sh

💤 Files with no reviewable changes (4)

• cli/release-automation/internal/automation/dispatcher_minimum_version_guard.go
• cli/dispatcher/internal/dispatcher/dispatcher_pin.go
• release-please-config.json
• scripts/test-sync-release-please-package-releases.sh

[cubic-dev-ai]

1 issue found across 11 files

<sub>Reply with feedback, questions, or to request a fix.

Re-trigger cubic</sub>