Emit workspace executor metrics

[chubes4]

Summary

• Emits execution_metrics from the optional Agents API blessed workspace executor adapter without changing the generic DMC ability result payload.
• Captures wall time, DMC ability timing/count, payload byte counts, artifact byte/count summaries, side-effect classes, and normalized failure class.
• Extends the adapter smoke test to prove metrics are emitted and do not copy secret inputs or oversized raw artifact payloads.

Dependency note

• Agents API issue Add normalized task execution metrics envelope Automattic/agents-api#311 is still open, so this keeps the metrics envelope adapter-local and generic-shaped without adding hard dependency hooks or changing Agents API payload contracts.

Tests

• php -l inc/AgentsApi/WorkspaceExecutorAdapter.php
• php -l tests/smoke-agents-api-workspace-executor-adapter.php
• php tests/smoke-agents-api-workspace-executor-adapter.php
• php tests/smoke-late-ability-registration.php
• php tests/smoke-tool-schemas.php
• php tests/smoke-wordpress-runtime-inspection.php
• homeboy lint data-machine-code --changed-since origin/main
• homeboy test data-machine-code --changed-since origin/main
• composer validate --no-check-publish (valid; existing warning about the version field)

Closes #569.

AI assistance

• AI assistance: Yes
• Tool(s): OpenCode (gpt-5.5)
• Used for: Drafted the adapter metrics implementation, smoke coverage, validation runs, and PR description for Chris to review.

[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 a0b1795

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/27068783488

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 a0b1795

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/27068783488

Audit

✅ audit — passed

• audit — 236 finding(s)
• Total: 236 finding(s)

Deep dive: homeboy audit data-machine-code --changed-since a0b1795

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/27068783488

Tooling versions

• Homeboy CLI: homeboy 0.220.3+21e1a4d
• Extension: wordpress from https://github.com/Extra-Chill/homeboy-extensions
• Extension revision: e34defd5
• Action: unknown@unknown