Mission Control: scheduled artifact retention + auditable deletion logs

[krusty-agent]

Summary

Implements Mission Control launch-gate item for artifact retention with 30-day default and auditable deletion logs, including scheduler wiring.

What shipped

• Added Convex cron scheduler (convex/crons.ts) to run daily retention sweep:
  • job id: mission-control-artifact-retention
  • schedule: 17 3 * * * (UTC)
• Added internal retention sweep mutation in convex/missionControlCore.ts:
  • runArtifactRetentionSweep
  • sweeps owners (or single owner), enforces retention, deletes stale artifact refs
  • writes audit logs with trigger: "system", actor DID, cutoff, deleted artifacts
• Extended audit schema in convex/schema.ts:
  • missionArtifactDeletionLogs.schedulerJobId
  • by_run_created index for run-level auditability
• Updated retention docs in docs/mission-control/mission-runs-api.md
• Added validation test script:
  • scripts/validate-mission-control-retention.mjs
  • npm script: mission-control:validate-retention

Evidence

Ran:

npm run mission-control:validate-retention

Output:

[retention-validate] OK

Notes

• Existing operator-triggered retention API path remains intact (applyArtifactRetention dry-run/live).
• Could not run npx convex codegen in this environment due missing CONVEX_DEPLOYMENT; runtime deploy/codegen should be done in configured environment.

[krusty-agent]

Superseded by consolidated integration PR #161: #161