Allow custom sync workflow job IDs

[adampoit]

Summary

• locate the sync workflow job by its patchlane sync command instead of requiring the fork-sync job ID
• report clear errors when no sync job or multiple sync jobs are found
• cover custom job IDs with direct GitHub App and wrapper token providers

Testing

• npm test
• npm run format:check

Closes #58

[not-adam]

Mira PR Walkthrough

Replaces the hard-coded fork-sync job ID lookup with a command-based job discovery that scans all jobs for a patchlane sync invocation. Adds inspectAuthenticatedCommandJob() to locate the sync job dynamically and reports clear errors when zero or multiple jobs match. Both direct GitHub App and wrapper token providers are covered with new tests.

Confidence: 5/5   ◉◉◉◉◉   Safe to merge

• Well-scoped refactor: new helper and discovery function are additive, error handling covers empty/multiple matches, and the existing test suite is expanded with four targeted tests covering all code paths.

Blast Radius — 2 dependent repositories, 3 total references

adampoit/mira — 1 reference
adampoit/wezterm — 2 references

2 files reviewed

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Comment @not-adam help to get the list of available commands and usage tips.