fix: emit canonical pending action resolution hooks

[chubes4]

Summary

• Replaces the legacy datamachine_pending_action_resolved hook payload with the canonical Agents API action, decision, and resolver contract.
• Updates the only in-repo runtime consumer to read Data Machine job context from metadata.datamachine.context.
• Updates pending-action docs and smoke coverage to pin the resolved hook signature and removal of legacy_payload().

Verification

• php tests/pending-actions-agents-api-contract-smoke.php
• php -l inc/Engine/AI/Actions/WordPressActionDispatchObserver.php && php -l inc/Engine/Actions/DataMachineActions.php && php -l tests/pending-actions-agents-api-contract-smoke.php
• vendor/bin/phpcs inc/Engine/AI/Actions/WordPressActionDispatchObserver.php inc/Engine/Actions/DataMachineActions.php tests/pending-actions-agents-api-contract-smoke.php
• homeboy test --path /Users/chubes/Developer/data-machine@fix-pending-action-resolved-contract --extension wordpress

Verification gaps

• homeboy lint --path /Users/chubes/Developer/data-machine@fix-pending-action-resolved-contract --extension wordpress reports existing repository-wide frontend lint findings outside this change.

Fixes #2222.

AI assistance

• AI assistance: Yes
• Tool(s): OpenCode (GPT-5.5)
• Used for: Auditing pending-action resolved hook consumers, implementing the canonical hook contract, updating smoke coverage and docs, and running verification.

[homeboy-ci]

Homeboy Results — data-machine

Lint

✅ lint — passed

ℹ️ Full options: homeboy docs commands/lint
Deep dive: homeboy lint data-machine --changed-since cd06f9c

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/26350431242

Test

✅ test — passed

• 605 passed
• 3 skipped

ℹ️ Auto-fix lint issues: homeboy refactor data-machine --from lint --write
ℹ️ Collect coverage: homeboy test data-machine --coverage
ℹ️ Save test baseline: homeboy test data-machine --baseline
ℹ️ Pass args to test runner: homeboy test -- [args]
ℹ️ Full options: homeboy docs commands/test
Deep dive: homeboy test data-machine --changed-since cd06f9c

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/26350431242

Audit

✅ audit — passed

• requested_detectors — 10 finding(s)
• intra-method-duplication — 7 finding(s)
• dead_code — 3 finding(s)
• Directives — 1 finding(s)
• Retention — 1 finding(s)
• Total: 22 finding(s)

Deep dive: homeboy audit data-machine --changed-since cd06f9c

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/26350431242

Tooling versions

• Homeboy CLI: homeboy 0.197.3+3c982b18
• Extension: wordpress from https://github.com/Extra-Chill/homeboy-extensions
• Extension revision: dd23ee80
• Action: unknown@unknown