fix: bundle Agents API for release

[chubes4]

Summary

• Moves automattic/agents-api into production Composer dependencies so release packages include the runtime substrate.
• Loads the bundled Agents API bootstrap idempotently and removes the WordPress Requires Plugins: agents-api activation dependency.
• Updates Playground/Homeboy validation paths and adds a smoke test proving packaged installs do not depend on the separate GitHub-only plugin.

Fixes #2178.

Verification

• php tests/release-bundled-agents-api-smoke.php
• php tests/agents-api-bootstrap-smoke.php
• ./vendor/bin/phpcs data-machine.php tests/release-bundled-agents-api-smoke.php
• composer validate --strict (valid with existing warning about the version field)
• composer install --no-dev --dry-run --no-interaction
• homeboy test --path /Users/chubes/Developer/data-machine@issue-2178-bundle-agents-api --extension wordpress (1285 passed, 3 skipped)
• homeboy release --path /Users/chubes/Developer/data-machine@issue-2178-bundle-agents-api --dry-run

Notes

• homeboy lint --path /Users/chubes/Developer/data-machine@issue-2178-bundle-agents-api --extension wordpress still reports pre-existing admin React lint findings outside this change.

AI assistance

• AI assistance: Yes
• Tool(s): OpenCode (openai/gpt-5.5)
• Used for: Drafted the bundled runtime implementation, release metadata updates, smoke coverage, and local verification commands for Chris to review.

[homeboy-ci]

Homeboy Results — data-machine

Lint

✅ lint — passed

ℹ️ Full options: homeboy docs commands/lint
Deep dive: homeboy lint data-machine --changed-since 165c424

Artifacts and drill-down

• CI results artifact: homeboy-ci-results-data-machine-lint-quality-Linux-node24 contains immediate command JSON for this action invocation.
• Observation artifact: homeboy-observations-data-machine-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/actions/runs/26311363621

Test

✅ test — passed

ℹ️ Auto-fix lint issues: homeboy refactor data-machine --from lint --write
ℹ️ Collect coverage: homeboy test data-machine --coverage
ℹ️ Pass args to test runner: homeboy test -- [args]
ℹ️ Full options: homeboy docs commands/test
Deep dive: homeboy test data-machine --changed-since 165c424

Artifacts and drill-down

• CI results artifact: homeboy-ci-results-data-machine-test-quality-Linux-node24 contains immediate command JSON for this action invocation.
• Observation artifact: homeboy-observations-data-machine-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/actions/runs/26311363621

Audit

✅ audit — passed

• requested_detectors — 1 finding(s)
• Total: 1 finding(s)

Deep dive: homeboy audit data-machine --changed-since 165c424

Artifacts and drill-down

• CI results artifact: homeboy-ci-results-data-machine-audit-quality-Linux-node24 contains immediate command JSON for this action invocation.
• Observation artifact: homeboy-observations-data-machine-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/actions/runs/26311363621

Tooling versions

• Homeboy CLI: homeboy 0.197.2+0ec7dcc8
• Extension: wordpress from https://github.com/Extra-Chill/homeboy-extensions
• Extension revision: dd23ee80
• Action: unknown@unknown