Removes the .next-call-count counter file guard (which fired on clean usage and missed
real incomplete work) and replaces it with a scan of all prior phases for plans without
summaries, unoverridden VERIFICATION.md failures, and phases with CONTEXT.md but no plans.
When gaps are found, shows a structured report with Continue/Stop/Force options; the
Continue path writes a formal 999.x backlog entry and commits it before routing. Clean
projects route silently with no interruption.
Closes#2089
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>