Task Projection Protocol (Generic + OpenCode Adapter)

Generic Rules

Blueprint §5 is the only truth. Projection (todo list, checklist, board) mirrors it.
Todo content starts with the stable ID: S1-T1 ... | M1 | depends: ....
Exactly one in_progress. Flip immediately on change; never batch at the end.
Durable mirror: on completion also flip the Blueprint §5 line [ ] to [x]. Tool states are ephemeral; the checkbox is the visible state.
New work: Blueprint §5 + §8 first, then todo. Rework: new ID (Rework from S1-T2), old marked obsolete.

Map truth to the built-in todo tool each turn; keep at most the current milestone slice (3-5 items).
Before starting: read Blueprint §4 to confirm macro position. After finishing: append §8 row when L2+.
Startup ID check: execute ../scripts/check-ids.sh <BLUEPRINT.md>; mismatch stops the run. Never hand-compare IDs.