Introduce the unified `missions` tier that will replace the current
research_topics + loops split. This slice ships the data model +
backfill + skeleton REST surface; the old wizards keep working in
parallel until Slice 9's big-bang cutover.
Migration 0047 adds:
- missions (top-level workflow: template_kind + team +
schedule + status + config)
- mission_phases (ordered {research|coding|benchmark|
security_scan} phases per mission)
- mission_tasks (typed units of work, e.g. INT-XX cards,
UPSERT-keyed on (phase_id, external_id))
- mission_artifacts (MD/PDF/benchmark/security/diff files with
a pending queue for the PDF renderer worker)
- benchmark_snapshots (before/after pairs per iteration)
Backfill copies existing research_topics + loops rows into the new
tables as one-shot missions with the appropriate template_kind, so
Slice 2's UI can render the full history immediately.
New Rust surface:
- cm_domain: MissionId, MissionPhaseId, MissionTaskId, MissionArtifactId
- cm_db::repo::missions: Mission/MissionPhase/MissionTask/
MissionArtifact structs + insert (txn-wrapped)/get/list/set_status/
phases_for/set_phase_status/upsert_task/tasks_for/register_artifact/
artifacts_for/next_pdf_pending/set_pdf_result
- cm_api::routes::missions: skeleton list/create/get/set_status
routes registered at /api/missions/*
Follow-up slices layer richer behavior (template dispatch, phase
execution, task parsing, artifact rendering) on this foundation.
Co-Authored-By: Claude Opus 4.7 <[email protected]>