fix: skip empty drain queue runs

[chubes4]

Summary

• skip first-step fetch flows in drain mode before job creation when their config patch queue is empty
• return an explicit skipped result with reason empty_drain_queue
• add smoke coverage for the pre-job short-circuit

Testing

• php -l inc/Abilities/Engine/RunFlowAbility.php
• php tests/run-flow-empty-drain-queue-smoke.php
• php tests/run-flow-paused-manual-smoke.php
• homeboy lint --path . --extension wordpress --changed-only
• git diff --check

Note: homeboy lint reported passed/no findings, but printed an existing PHPStan baseline-file warning during the PHPStan phase.

AI assistance

• AI assistance: Yes
• Tool(s): OpenCode (GPT-5.5)
• Used for: Drafted the empty drain queue short-circuit and smoke coverage; Chris remains responsible for review and merge.

[homeboy-ci]

Homeboy Results — data-machine

Lint

✅ lint — passed

ℹ️ Full options: homeboy docs commands/lint
Deep dive: homeboy lint data-machine --changed-since bad34b7

Test

✅ test — passed

• 765 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 bad34b7

Audit

✅ audit — passed

• requested_detectors — 6 finding(s)
• intra-method-duplication — 1 finding(s)
• Total: 7 finding(s)

Deep dive: homeboy audit data-machine --changed-since bad34b7

Tooling versions

• Homeboy CLI: homeboy 0.188.11+3fe01557
• Extension: wordpress from https://github.com/Extra-Chill/homeboy-extensions
• Extension revision: 8ec77fb4
• Action: unknown@unknown