[unohee]

Summary

• Prefix automation comments with the existing 🧭 [OpenSwarm] signature.
• Test the prefix across optional comment content and verify work-start, completion, and blocked comments precede their state changes.

Verification

• Targeted Vitest suite and TypeScript check pass.
• Baseline run of the new prefix assertion fails on origin/main as expected.

Follow-up

• Pairing a reason comment with the five other state-change call sites in src/linear/linear.ts remains out of scope. The file exceeds the repository's 1,000-line pre-commit limit and needs a separate refactor.