宜博 / lemongraph

The graphlemon Work Node (planner) workflow finished. It produced a PRD for a small, well-scoped change:

Task: Add a one-line rationale comment above _BUSY_TIMEOUT_MS = 30000 in src/scheduler.py, pointing to the existing sqlite concurrent-writer/busy-timeout rationale that's currently only documented in the module docstring (lines 21-28).

Key points from the PRD:

• Single-line insertion only — no value change, no other file touched
• Acceptance criteria are verifiable via git diff alone (single added line, no deletions/modifications elsewhere)
• Marked trivial/cosmetic risk — no test coverage required
• Exact comment wording left to the Code Agent, constrained to reference the sqlite retry-on-lock behavior and point back to the docstring

No code changes have been made yet — this was the planning step only. Next step (pending user direction) would be to implement it via the Coder agent/build workflow.