Fix Workspace PHPStan baseline

[chubes4]

Summary

• Tighten Workspace helper types and PHPDoc so PHPStan can prove cleanup paths without changing cleanup behavior.
• Remove unused constants and redundant guards flagged by the existing Workspace.php baseline.
• Make trait-facing helpers protected so static analysis recognizes their cross-file usage.

Testing

• php -l inc/Workspace/Workspace.php
• git diff --check
• php tests/smoke-worktree-metadata-reconcile.php
• php tests/smoke-worktree-cleanup-cli.php
• homeboy lint data-machine-code --path /Users/chubes/Developer/data-machine-code@fix-workspace-phpstan-baseline --changed-since origin/main (blocked locally: missing PHPCS binary at /Users/chubes/.config/homeboy/extensions/wordpress/vendor/bin/phpcs; emitted zero findings)

AI assistance

• AI assistance: Yes
• Tool(s): OpenCode (GPT-5.5)
• Used for: Drafted the PHPStan/type cleanup and ran local verification; Chris remains responsible for review and submission.

[homeboy-ci]

Homeboy Results — data-machine-code

Lint

✅ lint — passed

ℹ️ Full options: homeboy docs commands/lint
ℹ️ Save lint baseline: homeboy lint data-machine-code --baseline
Deep dive: homeboy lint data-machine-code --changed-since 502add7

Artifacts and drill-down

• CI results artifact: homeboy-ci-results-data-machine-code-lint-quality-Linux-node24 contains immediate command JSON for this action invocation.
• Observation artifact: homeboy-observations-data-machine-code-lint-quality-Linux-node24 contains exported Homeboy run history for deeper queries.
• Drill-down: download the observation artifact, then run homeboy runs import <dir>, homeboy runs list, and homeboy runs findings <run-id>.
• Artifacts are attached to the workflow run: https://github.com/Extra-Chill/data-machine-code/actions/runs/27094968763

Test

✅ test — passed

ℹ️ Auto-fix lint issues: homeboy refactor data-machine-code --from lint --write
ℹ️ Collect coverage: homeboy test data-machine-code --coverage
ℹ️ Pass args to test runner: homeboy test -- [args]
ℹ️ Full options: homeboy docs commands/test
Deep dive: homeboy test data-machine-code --changed-since 502add7

Artifacts and drill-down

• CI results artifact: homeboy-ci-results-data-machine-code-test-quality-Linux-node24 contains immediate command JSON for this action invocation.
• Observation artifact: homeboy-observations-data-machine-code-test-quality-Linux-node24 contains exported Homeboy run history for deeper queries.
• Drill-down: download the observation artifact, then run homeboy runs import <dir>, homeboy runs list, and homeboy runs findings <run-id>.
• Artifacts are attached to the workflow run: https://github.com/Extra-Chill/data-machine-code/actions/runs/27094968763

Audit

✅ audit — passed

• audit — 9 finding(s)
• Total: 9 finding(s)

Deep dive: homeboy audit data-machine-code --changed-since 502add7

Artifacts and drill-down

• CI results artifact: homeboy-ci-results-data-machine-code-audit-quality-Linux-node24 contains immediate command JSON for this action invocation.
• Observation artifact: homeboy-observations-data-machine-code-audit-quality-Linux-node24 contains exported Homeboy run history for deeper queries.
• Drill-down: download the observation artifact, then run homeboy runs import <dir>, homeboy runs list, and homeboy runs findings <run-id>.
• Artifacts are attached to the workflow run: https://github.com/Extra-Chill/data-machine-code/actions/runs/27094968763

Tooling versions

• Homeboy CLI: homeboy 0.222.4+79438b8
• Extension: wordpress from https://github.com/Extra-Chill/homeboy-extensions
• Extension revision: ab112fd6
• Action: unknown@unknown