-- Outcome & Alliance OS G5: Calibration Mirror & unseen-transfer ledgers.
-- Prerequisites: 02_schema.sql, 04_audit_eval_rls.sql, 07_measurement_foundation.sql.

INSERT INTO app.measurement_instrument (
  instrument_id, instrument_version, name_ko, instrument_kind, construct,
  validation_basis, scoring_schema, metadata
) VALUES
  (
    'calibration-mirror-g5', '1.0.0', '외부평가 전 자기보정',
    'training_metric', 'self_calibration',
    '외부평가 공개 전 자기예측과 독립 수행 관측의 차이를 역량별로 추적한다.',
    '{"prediction_probability":{"min":0,"max":1},"calibration_error":{"min":0,"max":1}}'::jsonb,
    '{"clinical_claim_allowed":false,"aggregate_total_forbidden":true}'::jsonb
  ),
  (
    'unseen-transfer-g5', '1.0.0', '미지 사례 역량 전이',
    'training_metric', 'transfer',
    '훈련 문구와 분리된 합성 미지 사례에서 역량 유지와 subgroup drift를 추적한다.',
    '{"transfer_success_rate":{"min":0,"max":1}}'::jsonb,
    '{"clinical_claim_allowed":false,"data_classification":"synthetic_educational","aggregate_total_forbidden":true}'::jsonb
  ),
  (
    'vignette.calibration-self-prediction', '1.0.0', '외부평가 전 자기보정 (호환용)',
    'training_metric', 'self_calibration',
    '외부평가 공개 전 자기예측과 독립 수행 관측의 차이를 역량별로 추적한다.',
    '{"prediction_probability":{"min":0,"max":1},"calibration_error":{"min":0,"max":1}}'::jsonb,
    '{"clinical_claim_allowed":false,"aggregate_total_forbidden":true}'::jsonb
  )
ON CONFLICT (instrument_id, instrument_version) DO NOTHING;

CREATE TABLE IF NOT EXISTS app.calibration_prediction_history (
  history_id UUID PRIMARY KEY,
  session_id UUID NOT NULL REFERENCES app.sessions(id) ON DELETE RESTRICT,
  learner_id UUID NOT NULL REFERENCES app.app_user(user_id) ON DELETE RESTRICT,
  competency_id TEXT NOT NULL CHECK (competency_id ~ '^competency\.[a-z0-9_.-]+$'),
  practice_block_id TEXT NOT NULL CHECK (practice_block_id ~ '^oas-g5-block-[a-z0-9-]+$'),
  scenario_variant_id TEXT NOT NULL CHECK (length(btrim(scenario_variant_id)) > 0),
  phrase_family_id TEXT NOT NULL CHECK (length(btrim(phrase_family_id)) > 0),
  visible_to TEXT[] NOT NULL DEFAULT '{counselor,evaluator,supervisor,research}'
    CHECK (
      cardinality(visible_to) > 0
      AND visible_to <@ ARRAY['counselor','evaluator','supervisor','research']::TEXT[]
    ),
  created_by_role TEXT NOT NULL DEFAULT 'learner'
    CHECK (created_by_role IN ('learner','migration')),
  created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  UNIQUE (learner_id, practice_block_id)
);
CREATE INDEX IF NOT EXISTS idx_calibration_prediction_history_learner
  ON app.calibration_prediction_history(learner_id, created_at, history_id);

CREATE TABLE IF NOT EXISTS app.calibration_prediction_revision (
  prediction_revision_id UUID PRIMARY KEY,
  submission_id UUID NOT NULL UNIQUE,
  content_hash TEXT NOT NULL CHECK (content_hash ~ '^[a-f0-9]{64}$'),
  history_id UUID NOT NULL REFERENCES app.calibration_prediction_history(history_id) ON DELETE RESTRICT,
  session_id UUID NOT NULL REFERENCES app.sessions(id) ON DELETE RESTRICT,
  learner_id UUID NOT NULL REFERENCES app.app_user(user_id) ON DELETE RESTRICT,
  revision_no INT NOT NULL CHECK (revision_no >= 1),
  supersedes_prediction_revision_id UUID
    REFERENCES app.calibration_prediction_revision(prediction_revision_id) ON DELETE RESTRICT,
  predicted_success_probability DOUBLE PRECISION NOT NULL
    CHECK (predicted_success_probability BETWEEN 0 AND 1),
  confidence DOUBLE PRECISION NOT NULL CHECK (confidence BETWEEN 0 AND 1),
  recorded_sequence INT NOT NULL CHECK (recorded_sequence >= 1),
  revision_reason TEXT NOT NULL CHECK (length(btrim(revision_reason)) > 0),
  source_kind TEXT NOT NULL DEFAULT 'learner_reported'
    CHECK (source_kind = 'learner_reported'),
  perspective TEXT NOT NULL DEFAULT 'learner_self_report'
    CHECK (perspective = 'learner_self_report'),
  model_run_id UUID CHECK (model_run_id IS NULL),
  instrument_id TEXT NOT NULL,
  instrument_version TEXT NOT NULL,
  evidence_turn_ids UUID[] NOT NULL DEFAULT '{}',
  created_by_role TEXT NOT NULL DEFAULT 'learner' CHECK (created_by_role = 'learner'),
  created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  UNIQUE (history_id, revision_no),
  UNIQUE (history_id, recorded_sequence),
  UNIQUE (supersedes_prediction_revision_id),
  UNIQUE (prediction_revision_id, history_id, session_id, learner_id),
  FOREIGN KEY (instrument_id, instrument_version)
    REFERENCES app.measurement_instrument(instrument_id, instrument_version) ON DELETE RESTRICT,
  CHECK (prediction_revision_id IS DISTINCT FROM supersedes_prediction_revision_id)
);
CREATE INDEX IF NOT EXISTS idx_calibration_prediction_revision_latest
  ON app.calibration_prediction_revision(history_id, revision_no DESC);

CREATE TABLE IF NOT EXISTS app.calibration_prediction_lock (
  lock_id UUID PRIMARY KEY,
  submission_id UUID NOT NULL UNIQUE,
  content_hash TEXT NOT NULL CHECK (content_hash ~ '^[a-f0-9]{64}$'),
  history_id UUID NOT NULL UNIQUE
    REFERENCES app.calibration_prediction_history(history_id) ON DELETE RESTRICT,
  prediction_revision_id UUID NOT NULL UNIQUE,
  session_id UUID NOT NULL REFERENCES app.sessions(id) ON DELETE RESTRICT,
  learner_id UUID NOT NULL REFERENCES app.app_user(user_id) ON DELETE RESTRICT,
  locked_sequence INT NOT NULL CHECK (locked_sequence >= 1),
  created_by_role TEXT NOT NULL DEFAULT 'learner' CHECK (created_by_role = 'learner'),
  created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  FOREIGN KEY (prediction_revision_id, history_id, session_id, learner_id)
    REFERENCES app.calibration_prediction_revision(
      prediction_revision_id, history_id, session_id, learner_id
    ) ON DELETE RESTRICT,
  UNIQUE (lock_id, history_id, session_id, learner_id)
);

CREATE TABLE IF NOT EXISTS app.calibration_performance_observation (
  observation_id UUID PRIMARY KEY,
  submission_id UUID NOT NULL UNIQUE,
  content_hash TEXT NOT NULL CHECK (content_hash ~ '^[a-f0-9]{64}$'),
  history_id UUID NOT NULL UNIQUE
    REFERENCES app.calibration_prediction_history(history_id) ON DELETE RESTRICT,
  prediction_lock_id UUID NOT NULL UNIQUE,
  session_id UUID NOT NULL REFERENCES app.sessions(id) ON DELETE RESTRICT,
  learner_id UUID NOT NULL REFERENCES app.app_user(user_id) ON DELETE RESTRICT,
  competency_id TEXT NOT NULL CHECK (competency_id ~ '^competency\.[a-z0-9_.-]+$'),
  practice_block_id TEXT NOT NULL CHECK (practice_block_id ~ '^oas-g5-block-[a-z0-9-]+$'),
  scenario_variant_id TEXT NOT NULL CHECK (length(btrim(scenario_variant_id)) > 0),
  phrase_family_id TEXT NOT NULL CHECK (length(btrim(phrase_family_id)) > 0),
  status TEXT NOT NULL CHECK (status IN ('passed','failed','insufficient_evidence')),
  source_kind TEXT NOT NULL CHECK (source_kind IN ('model_inferred','observed_runtime')),
  perspective TEXT NOT NULL CHECK (
    perspective IN ('independent_observer','runtime_observation')
  ),
  model_run_id UUID REFERENCES audit.model_run(model_run_id) ON DELETE RESTRICT,
  instrument_id TEXT NOT NULL,
  instrument_version TEXT NOT NULL,
  uncertainty DOUBLE PRECISION NOT NULL CHECK (uncertainty BETWEEN 0 AND 1),
  evidence_turn_ids UUID[] NOT NULL DEFAULT '{}',
  counterevidence TEXT[] NOT NULL DEFAULT '{}',
  revealed_sequence INT NOT NULL CHECK (revealed_sequence >= 1),
  visible_to TEXT[] NOT NULL DEFAULT '{counselor,evaluator,supervisor,research}'
    CHECK (
      cardinality(visible_to) > 0
      AND visible_to <@ ARRAY['counselor','evaluator','supervisor','research']::TEXT[]
    ),
  created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  FOREIGN KEY (prediction_lock_id, history_id, session_id, learner_id)
    REFERENCES app.calibration_prediction_lock(lock_id, history_id, session_id, learner_id)
    ON DELETE RESTRICT,
  FOREIGN KEY (instrument_id, instrument_version)
    REFERENCES app.measurement_instrument(instrument_id, instrument_version) ON DELETE RESTRICT,
  CHECK (
    (source_kind = 'model_inferred' AND perspective = 'independent_observer' AND model_run_id IS NOT NULL)
    OR (source_kind = 'observed_runtime' AND perspective = 'runtime_observation')
  ),
  CHECK (
    (status = 'insufficient_evidence' AND uncertainty = 1 AND cardinality(evidence_turn_ids) = 0)
    OR (status IN ('passed','failed') AND cardinality(evidence_turn_ids) > 0)
  ),
  CHECK (status <> 'failed' OR cardinality(counterevidence) > 0),
  UNIQUE (observation_id, session_id, learner_id, competency_id)
);
CREATE INDEX IF NOT EXISTS idx_calibration_observation_learner_competency
  ON app.calibration_performance_observation(learner_id, competency_id, created_at);

CREATE TABLE IF NOT EXISTS app.calibration_assessment_snapshot (
  assessment_snapshot_id UUID PRIMARY KEY,
  submission_id UUID NOT NULL UNIQUE,
  content_hash TEXT NOT NULL CHECK (content_hash ~ '^[a-f0-9]{64}$'),
  session_id UUID NOT NULL REFERENCES app.sessions(id) ON DELETE RESTRICT,
  learner_id UUID NOT NULL REFERENCES app.app_user(user_id) ON DELETE RESTRICT,
  competency_id TEXT NOT NULL CHECK (competency_id ~ '^competency\.[a-z0-9_.-]+$'),
  snapshot_no INT NOT NULL CHECK (snapshot_no >= 1),
  supersedes_assessment_snapshot_id UUID
    REFERENCES app.calibration_assessment_snapshot(assessment_snapshot_id) ON DELETE RESTRICT,
  source_observation_ids UUID[] NOT NULL CHECK (cardinality(source_observation_ids) > 0),
  assessment_payload JSONB NOT NULL CHECK (jsonb_typeof(assessment_payload) = 'object'),
  model_run_id UUID NOT NULL REFERENCES audit.model_run(model_run_id) ON DELETE RESTRICT,
  instrument_id TEXT NOT NULL,
  instrument_version TEXT NOT NULL,
  evidence_turn_ids UUID[] NOT NULL DEFAULT '{}',
  visible_to TEXT[] NOT NULL DEFAULT '{counselor,evaluator,supervisor,research}'
    CHECK (
      cardinality(visible_to) > 0
      AND visible_to <@ ARRAY['counselor','evaluator','supervisor','research']::TEXT[]
    ),
  created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  FOREIGN KEY (instrument_id, instrument_version)
    REFERENCES app.measurement_instrument(instrument_id, instrument_version) ON DELETE RESTRICT,
  UNIQUE (learner_id, competency_id, snapshot_no),
  UNIQUE (supersedes_assessment_snapshot_id),
  UNIQUE (assessment_snapshot_id, session_id, learner_id, competency_id),
  CHECK (assessment_snapshot_id IS DISTINCT FROM supersedes_assessment_snapshot_id)
);
CREATE INDEX IF NOT EXISTS idx_calibration_assessment_latest
  ON app.calibration_assessment_snapshot(learner_id, competency_id, snapshot_no DESC);

CREATE TABLE IF NOT EXISTS app.calibration_metacognitive_prescription (
  prescription_id UUID PRIMARY KEY,
  assessment_snapshot_id UUID NOT NULL UNIQUE,
  session_id UUID NOT NULL REFERENCES app.sessions(id) ON DELETE RESTRICT,
  learner_id UUID NOT NULL REFERENCES app.app_user(user_id) ON DELETE RESTRICT,
  competency_id TEXT NOT NULL CHECK (competency_id ~ '^competency\.[a-z0-9_.-]+$'),
  prescription_payload JSONB NOT NULL CHECK (jsonb_typeof(prescription_payload) = 'object'),
  model_run_id UUID NOT NULL REFERENCES audit.model_run(model_run_id) ON DELETE RESTRICT,
  instrument_id TEXT NOT NULL,
  instrument_version TEXT NOT NULL,
  evidence_turn_ids UUID[] NOT NULL DEFAULT '{}',
  visible_to TEXT[] NOT NULL DEFAULT '{counselor,evaluator,supervisor,research}'
    CHECK (
      cardinality(visible_to) > 0
      AND visible_to <@ ARRAY['counselor','evaluator','supervisor','research']::TEXT[]
    ),
  created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  FOREIGN KEY (assessment_snapshot_id, session_id, learner_id, competency_id)
    REFERENCES app.calibration_assessment_snapshot(
      assessment_snapshot_id, session_id, learner_id, competency_id
    ) ON DELETE RESTRICT,
  FOREIGN KEY (instrument_id, instrument_version)
    REFERENCES app.measurement_instrument(instrument_id, instrument_version) ON DELETE RESTRICT
);

CREATE TABLE IF NOT EXISTS app.calibration_transfer_suite (
  transfer_suite_record_id UUID PRIMARY KEY,
  submission_id UUID NOT NULL UNIQUE,
  content_hash TEXT NOT NULL CHECK (content_hash ~ '^[a-f0-9]{64}$'),
  suite_key TEXT NOT NULL CHECK (suite_key ~ '^oas-g5-suite-[a-z0-9-]+$'),
  session_id UUID NOT NULL REFERENCES app.sessions(id) ON DELETE RESTRICT,
  learner_id UUID NOT NULL REFERENCES app.app_user(user_id) ON DELETE RESTRICT,
  training_phrase_family_ids TEXT[] NOT NULL CHECK (cardinality(training_phrase_family_ids) > 0),
  model_run_id UUID NOT NULL REFERENCES audit.model_run(model_run_id) ON DELETE RESTRICT,
  instrument_id TEXT NOT NULL,
  instrument_version TEXT NOT NULL,
  data_classification TEXT NOT NULL DEFAULT 'synthetic_educational'
    CHECK (data_classification = 'synthetic_educational'),
  clinical_claim_allowed BOOLEAN NOT NULL DEFAULT FALSE CHECK (clinical_claim_allowed = FALSE),
  visible_to TEXT[] NOT NULL DEFAULT '{counselor,evaluator,supervisor,research}'
    CHECK (
      cardinality(visible_to) > 0
      AND visible_to <@ ARRAY['counselor','evaluator','supervisor','research']::TEXT[]
    ),
  created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  FOREIGN KEY (instrument_id, instrument_version)
    REFERENCES app.measurement_instrument(instrument_id, instrument_version) ON DELETE RESTRICT,
  UNIQUE (learner_id, suite_key),
  UNIQUE (transfer_suite_record_id, session_id, learner_id)
);

CREATE TABLE IF NOT EXISTS app.calibration_transfer_trial (
  transfer_trial_record_id UUID PRIMARY KEY,
  transfer_suite_record_id UUID NOT NULL,
  session_id UUID NOT NULL REFERENCES app.sessions(id) ON DELETE RESTRICT,
  learner_id UUID NOT NULL REFERENCES app.app_user(user_id) ON DELETE RESTRICT,
  trial_key TEXT NOT NULL CHECK (trial_key ~ '^oas-g5-transfer-[a-z0-9-]+$'),
  competency_id TEXT NOT NULL CHECK (competency_id ~ '^competency\.[a-z0-9_.-]+$'),
  scenario_variant_id TEXT NOT NULL CHECK (length(btrim(scenario_variant_id)) > 0),
  scenario_novelty TEXT NOT NULL DEFAULT 'unseen_transfer'
    CHECK (scenario_novelty = 'unseen_transfer'),
  context_variant TEXT NOT NULL CHECK (length(btrim(context_variant)) > 0),
  relationship_style TEXT NOT NULL CHECK (
    relationship_style IN ('collaborative','withdrawn','confrontational','ambivalent')
  ),
  difficulty_level INT NOT NULL CHECK (difficulty_level BETWEEN 1 AND 5),
  expression_variant TEXT NOT NULL CHECK (length(btrim(expression_variant)) > 0),
  synthetic_subgroup TEXT NOT NULL CHECK (synthetic_subgroup ~ '^synthetic-[a-z0-9-]+$'),
  scenario_family_id TEXT NOT NULL CHECK (length(btrim(scenario_family_id)) > 0),
  phrase_family_id TEXT NOT NULL CHECK (length(btrim(phrase_family_id)) > 0),
  status TEXT NOT NULL CHECK (status IN ('passed','failed','insufficient_evidence')),
  uncertainty DOUBLE PRECISION NOT NULL CHECK (uncertainty BETWEEN 0 AND 1),
  evidence_turn_ids UUID[] NOT NULL DEFAULT '{}',
  counterevidence TEXT[] NOT NULL DEFAULT '{}',
  model_run_id UUID NOT NULL REFERENCES audit.model_run(model_run_id) ON DELETE RESTRICT,
  instrument_id TEXT NOT NULL,
  instrument_version TEXT NOT NULL,
  created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  FOREIGN KEY (transfer_suite_record_id, session_id, learner_id)
    REFERENCES app.calibration_transfer_suite(transfer_suite_record_id, session_id, learner_id)
    ON DELETE RESTRICT,
  FOREIGN KEY (instrument_id, instrument_version)
    REFERENCES app.measurement_instrument(instrument_id, instrument_version) ON DELETE RESTRICT,
  UNIQUE (transfer_suite_record_id, trial_key),
  UNIQUE (transfer_trial_record_id, transfer_suite_record_id, session_id, learner_id, competency_id),
  CHECK (
    (status = 'insufficient_evidence' AND uncertainty = 1 AND cardinality(evidence_turn_ids) = 0)
    OR (status IN ('passed','failed') AND cardinality(evidence_turn_ids) > 0)
  ),
  CHECK (status <> 'failed' OR cardinality(counterevidence) > 0)
);
CREATE INDEX IF NOT EXISTS idx_calibration_transfer_trial_suite_competency
  ON app.calibration_transfer_trial(transfer_suite_record_id, competency_id, created_at);

CREATE TABLE IF NOT EXISTS app.calibration_transfer_assessment (
  transfer_assessment_id UUID PRIMARY KEY,
  transfer_suite_record_id UUID NOT NULL,
  session_id UUID NOT NULL REFERENCES app.sessions(id) ON DELETE RESTRICT,
  learner_id UUID NOT NULL REFERENCES app.app_user(user_id) ON DELETE RESTRICT,
  competency_id TEXT NOT NULL CHECK (competency_id ~ '^competency\.[a-z0-9_.-]+$'),
  source_trial_ids UUID[] NOT NULL CHECK (cardinality(source_trial_ids) > 0),
  assessment_payload JSONB NOT NULL CHECK (jsonb_typeof(assessment_payload) = 'object'),
  evidence_turn_ids UUID[] NOT NULL DEFAULT '{}',
  model_run_id UUID NOT NULL REFERENCES audit.model_run(model_run_id) ON DELETE RESTRICT,
  instrument_id TEXT NOT NULL,
  instrument_version TEXT NOT NULL,
  created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  FOREIGN KEY (transfer_suite_record_id, session_id, learner_id)
    REFERENCES app.calibration_transfer_suite(transfer_suite_record_id, session_id, learner_id)
    ON DELETE RESTRICT,
  FOREIGN KEY (instrument_id, instrument_version)
    REFERENCES app.measurement_instrument(instrument_id, instrument_version) ON DELETE RESTRICT,
  UNIQUE (transfer_suite_record_id, competency_id),
  UNIQUE (transfer_assessment_id, session_id, learner_id)
);

CREATE TABLE IF NOT EXISTS app.calibration_subgroup_drift_report (
  drift_report_id UUID PRIMARY KEY,
  transfer_suite_record_id UUID NOT NULL,
  session_id UUID NOT NULL REFERENCES app.sessions(id) ON DELETE RESTRICT,
  learner_id UUID NOT NULL REFERENCES app.app_user(user_id) ON DELETE RESTRICT,
  competency_id TEXT NOT NULL CHECK (competency_id ~ '^competency\.[a-z0-9_.-]+$'),
  source_trial_ids UUID[] NOT NULL CHECK (cardinality(source_trial_ids) > 0),
  report_payload JSONB NOT NULL CHECK (jsonb_typeof(report_payload) = 'object'),
  model_run_id UUID NOT NULL REFERENCES audit.model_run(model_run_id) ON DELETE RESTRICT,
  instrument_id TEXT NOT NULL,
  instrument_version TEXT NOT NULL,
  data_classification TEXT NOT NULL DEFAULT 'synthetic_educational'
    CHECK (data_classification = 'synthetic_educational'),
  clinical_claim_allowed BOOLEAN NOT NULL DEFAULT FALSE CHECK (clinical_claim_allowed = FALSE),
  created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  FOREIGN KEY (transfer_suite_record_id, session_id, learner_id)
    REFERENCES app.calibration_transfer_suite(transfer_suite_record_id, session_id, learner_id)
    ON DELETE RESTRICT,
  FOREIGN KEY (instrument_id, instrument_version)
    REFERENCES app.measurement_instrument(instrument_id, instrument_version) ON DELETE RESTRICT,
  UNIQUE (transfer_suite_record_id, competency_id),
  UNIQUE (drift_report_id, session_id, learner_id)
);

CREATE TABLE IF NOT EXISTS app.calibration_teacher_review_event (
  review_id UUID PRIMARY KEY,
  submission_id UUID NOT NULL UNIQUE,
  content_hash TEXT NOT NULL CHECK (content_hash ~ '^[a-f0-9]{64}$'),
  target_kind TEXT NOT NULL CHECK (
    target_kind IN ('calibration_assessment','transfer_assessment','drift_report')
  ),
  target_id UUID NOT NULL,
  session_id UUID NOT NULL REFERENCES app.sessions(id) ON DELETE RESTRICT,
  learner_id UUID NOT NULL REFERENCES app.app_user(user_id) ON DELETE RESTRICT,
  review_no INT NOT NULL CHECK (review_no >= 1),
  supersedes_review_id UUID
    REFERENCES app.calibration_teacher_review_event(review_id) ON DELETE RESTRICT,
  disposition TEXT NOT NULL CHECK (
    disposition IN ('confirmed','corrected','needs_more_evidence')
  ),
  correction_payload JSONB NOT NULL DEFAULT '{}'::JSONB
    CHECK (jsonb_typeof(correction_payload) = 'object'),
  review_reason TEXT NOT NULL CHECK (length(btrim(review_reason)) > 0),
  evidence_turn_ids UUID[] NOT NULL DEFAULT '{}',
  counterevidence TEXT[] NOT NULL DEFAULT '{}',
  created_by_uid UUID NOT NULL REFERENCES app.app_user(user_id) ON DELETE RESTRICT,
  created_by_role TEXT NOT NULL CHECK (created_by_role IN ('instructor','admin')),
  created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
  UNIQUE (target_kind, target_id, review_no),
  UNIQUE (supersedes_review_id),
  CHECK (review_id IS DISTINCT FROM supersedes_review_id),
  CHECK (disposition = 'corrected' OR correction_payload = '{}'::JSONB)
);
CREATE INDEX IF NOT EXISTS idx_calibration_teacher_review_target
  ON app.calibration_teacher_review_event(target_kind, target_id, review_no DESC);

CREATE OR REPLACE FUNCTION audit.enforce_calibration_session_learner()
RETURNS trigger
LANGUAGE plpgsql
AS $$
DECLARE
  anchor_learner UUID;
BEGIN
  SELECT s.learner_id INTO anchor_learner FROM app.sessions s WHERE s.id = NEW.session_id;
  IF anchor_learner IS NULL OR anchor_learner IS DISTINCT FROM NEW.learner_id THEN
    RAISE EXCEPTION 'calibration row must match its session learner'
      USING ERRCODE = '23514';
  END IF;
  RETURN NEW;
END;
$$;

CREATE OR REPLACE FUNCTION audit.enforce_calibration_evidence_ownership()
RETURNS trigger
LANGUAGE plpgsql
AS $$
BEGIN
  IF cardinality(NEW.evidence_turn_ids) > 0 AND (
    SELECT count(DISTINCT t.id)
    FROM app.turns t
    WHERE t.session_id = NEW.session_id AND t.id = ANY(NEW.evidence_turn_ids)
  ) <> cardinality(NEW.evidence_turn_ids) THEN
    RAISE EXCEPTION 'calibration evidence turns must belong to its session'
      USING ERRCODE = '23514';
  END IF;
  RETURN NEW;
END;
$$;

CREATE OR REPLACE FUNCTION audit.enforce_calibration_payload_boundary()
RETURNS trigger
LANGUAGE plpgsql
AS $$
DECLARE
  payload JSONB;
BEGIN
  payload := COALESCE(
    to_jsonb(NEW)->'assessment_payload',
    to_jsonb(NEW)->'prescription_payload',
    to_jsonb(NEW)->'report_payload',
    to_jsonb(NEW)->'correction_payload',
    '{}'::JSONB
  );
  IF payload::TEXT ~* '"(raw_transcript|transcript|text_masked|utterance_text|quote|total_score|overall_score)"[[:space:]]*:' THEN
    RAISE EXCEPTION 'calibration payload cannot store transcript text or aggregate score'
      USING ERRCODE = '23514';
  END IF;
  RETURN NEW;
END;
$$;

CREATE OR REPLACE FUNCTION audit.enforce_calibration_prediction_revision()
RETURNS trigger
LANGUAGE plpgsql
AS $$
DECLARE
  history_row app.calibration_prediction_history%ROWTYPE;
  latest_id UUID;
  latest_no INT;
  latest_sequence INT;
BEGIN
  PERFORM pg_advisory_xact_lock(hashtextextended(NEW.history_id::TEXT, 5));
  SELECT * INTO history_row FROM app.calibration_prediction_history WHERE history_id = NEW.history_id;
  IF history_row.history_id IS NULL
     OR history_row.session_id IS DISTINCT FROM NEW.session_id
     OR history_row.learner_id IS DISTINCT FROM NEW.learner_id THEN
    RAISE EXCEPTION 'prediction revision must match its history anchor'
      USING ERRCODE = '23514';
  END IF;
  IF EXISTS (SELECT 1 FROM app.calibration_prediction_lock l WHERE l.history_id = NEW.history_id)
     OR EXISTS (SELECT 1 FROM app.calibration_performance_observation o WHERE o.history_id = NEW.history_id) THEN
    RAISE EXCEPTION 'self-prediction cannot be revised after lock or external reveal'
      USING ERRCODE = '55000';
  END IF;
  SELECT prediction_revision_id, revision_no, recorded_sequence
    INTO latest_id, latest_no, latest_sequence
  FROM app.calibration_prediction_revision
  WHERE history_id = NEW.history_id
  ORDER BY revision_no DESC
  LIMIT 1;
  IF latest_id IS NULL THEN
    IF NEW.revision_no <> 1 OR NEW.supersedes_prediction_revision_id IS NOT NULL THEN
      RAISE EXCEPTION 'first self-prediction revision must start at one without supersedes'
        USING ERRCODE = '23514';
    END IF;
  ELSIF NEW.revision_no <> latest_no + 1
        OR NEW.supersedes_prediction_revision_id IS DISTINCT FROM latest_id
        OR NEW.recorded_sequence <= latest_sequence THEN
    RAISE EXCEPTION 'self-prediction revision must be contiguous and supersede latest'
      USING ERRCODE = '23514';
  END IF;
  RETURN NEW;
END;
$$;

CREATE OR REPLACE FUNCTION audit.enforce_calibration_prediction_lock()
RETURNS trigger
LANGUAGE plpgsql
AS $$
DECLARE
  latest_id UUID;
  latest_sequence INT;
BEGIN
  PERFORM pg_advisory_xact_lock(hashtextextended(NEW.history_id::TEXT, 5));
  SELECT prediction_revision_id, recorded_sequence INTO latest_id, latest_sequence
  FROM app.calibration_prediction_revision
  WHERE history_id = NEW.history_id
  ORDER BY revision_no DESC
  LIMIT 1;
  IF latest_id IS NULL OR NEW.prediction_revision_id IS DISTINCT FROM latest_id
     OR NEW.locked_sequence < latest_sequence THEN
    RAISE EXCEPTION 'prediction lock must target the latest revision at or after its sequence'
      USING ERRCODE = '23514';
  END IF;
  RETURN NEW;
END;
$$;

CREATE OR REPLACE FUNCTION audit.enforce_calibration_observation_reveal()
RETURNS trigger
LANGUAGE plpgsql
AS $$
DECLARE
  history_row app.calibration_prediction_history%ROWTYPE;
  lock_sequence INT;
BEGIN
  SELECT * INTO history_row FROM app.calibration_prediction_history WHERE history_id = NEW.history_id;
  SELECT locked_sequence INTO lock_sequence
  FROM app.calibration_prediction_lock
  WHERE lock_id = NEW.prediction_lock_id AND history_id = NEW.history_id;
  IF history_row.history_id IS NULL OR lock_sequence IS NULL
     OR NEW.revealed_sequence <= lock_sequence
     OR NEW.session_id IS DISTINCT FROM history_row.session_id
     OR NEW.learner_id IS DISTINCT FROM history_row.learner_id
     OR NEW.competency_id IS DISTINCT FROM history_row.competency_id
     OR NEW.practice_block_id IS DISTINCT FROM history_row.practice_block_id
     OR NEW.scenario_variant_id IS DISTINCT FROM history_row.scenario_variant_id
     OR NEW.phrase_family_id IS DISTINCT FROM history_row.phrase_family_id THEN
    RAISE EXCEPTION 'external observation requires a matching locked prediction and later reveal sequence'
      USING ERRCODE = '23514';
  END IF;
  RETURN NEW;
END;
$$;

CREATE OR REPLACE FUNCTION audit.enforce_calibration_assessment_chain()
RETURNS trigger
LANGUAGE plpgsql
AS $$
DECLARE
  latest_id UUID;
  latest_no INT;
  matched_count INT;
BEGIN
  PERFORM pg_advisory_xact_lock(hashtextextended(NEW.learner_id::TEXT || ':' || NEW.competency_id, 6));
  SELECT assessment_snapshot_id, snapshot_no INTO latest_id, latest_no
  FROM app.calibration_assessment_snapshot
  WHERE learner_id = NEW.learner_id AND competency_id = NEW.competency_id
  ORDER BY snapshot_no DESC LIMIT 1;
  IF latest_id IS NULL THEN
    IF NEW.snapshot_no <> 1 OR NEW.supersedes_assessment_snapshot_id IS NOT NULL THEN
      RAISE EXCEPTION 'first calibration assessment snapshot must start at one'
        USING ERRCODE = '23514';
    END IF;
  ELSIF NEW.snapshot_no <> latest_no + 1
        OR NEW.supersedes_assessment_snapshot_id IS DISTINCT FROM latest_id THEN
    RAISE EXCEPTION 'calibration assessment must supersede latest snapshot'
      USING ERRCODE = '23514';
  END IF;
  SELECT count(DISTINCT o.observation_id) INTO matched_count
  FROM app.calibration_performance_observation o
  WHERE o.observation_id = ANY(NEW.source_observation_ids)
    AND o.learner_id = NEW.learner_id
    AND o.competency_id = NEW.competency_id;
  IF matched_count <> cardinality(NEW.source_observation_ids)
     OR NEW.assessment_payload->>'competency_id' IS DISTINCT FROM NEW.competency_id THEN
    RAISE EXCEPTION 'calibration assessment sources or competency do not match'
      USING ERRCODE = '23514';
  END IF;
  RETURN NEW;
END;
$$;

CREATE OR REPLACE FUNCTION audit.enforce_calibration_transfer_children()
RETURNS trigger
LANGUAGE plpgsql
AS $$
DECLARE
  matched_count INT;
BEGIN
  IF TG_TABLE_NAME = 'calibration_transfer_assessment' THEN
    SELECT count(DISTINCT t.transfer_trial_record_id) INTO matched_count
    FROM app.calibration_transfer_trial t
    WHERE t.transfer_trial_record_id = ANY(NEW.source_trial_ids)
      AND t.transfer_suite_record_id = NEW.transfer_suite_record_id
      AND t.competency_id = NEW.competency_id;
    IF matched_count <> cardinality(NEW.source_trial_ids)
       OR NEW.assessment_payload->>'competency_id' IS DISTINCT FROM NEW.competency_id THEN
      RAISE EXCEPTION 'transfer assessment sources or competency do not match'
        USING ERRCODE = '23514';
    END IF;
  ELSIF TG_TABLE_NAME = 'calibration_subgroup_drift_report' THEN
    SELECT count(DISTINCT t.transfer_trial_record_id) INTO matched_count
    FROM app.calibration_transfer_trial t
    WHERE t.transfer_trial_record_id = ANY(NEW.source_trial_ids)
      AND t.transfer_suite_record_id = NEW.transfer_suite_record_id
      AND t.competency_id = NEW.competency_id;
    IF matched_count <> cardinality(NEW.source_trial_ids)
       OR NEW.report_payload->>'competency_id' IS DISTINCT FROM NEW.competency_id THEN
      RAISE EXCEPTION 'subgroup drift sources or competency do not match'
        USING ERRCODE = '23514';
    END IF;
  END IF;
  RETURN NEW;
END;
$$;

CREATE OR REPLACE FUNCTION audit.enforce_calibration_teacher_review()
RETURNS trigger
LANGUAGE plpgsql
AS $$
DECLARE
  target_session UUID;
  target_learner UUID;
  latest_id UUID;
  latest_no INT;
BEGIN
  IF NEW.target_kind = 'calibration_assessment' THEN
    SELECT session_id, learner_id INTO target_session, target_learner
    FROM app.calibration_assessment_snapshot WHERE assessment_snapshot_id = NEW.target_id;
  ELSIF NEW.target_kind = 'transfer_assessment' THEN
    SELECT session_id, learner_id INTO target_session, target_learner
    FROM app.calibration_transfer_assessment WHERE transfer_assessment_id = NEW.target_id;
  ELSE
    SELECT session_id, learner_id INTO target_session, target_learner
    FROM app.calibration_subgroup_drift_report WHERE drift_report_id = NEW.target_id;
  END IF;
  IF target_session IS NULL OR NEW.session_id IS DISTINCT FROM target_session
     OR NEW.learner_id IS DISTINCT FROM target_learner THEN
    RAISE EXCEPTION 'teacher review target is missing or mismatched'
      USING ERRCODE = '23514';
  END IF;
  PERFORM pg_advisory_xact_lock(hashtextextended(NEW.target_kind || ':' || NEW.target_id::TEXT, 7));
  SELECT review_id, review_no INTO latest_id, latest_no
  FROM app.calibration_teacher_review_event
  WHERE target_kind = NEW.target_kind AND target_id = NEW.target_id
  ORDER BY review_no DESC LIMIT 1;
  IF latest_id IS NULL THEN
    IF NEW.review_no <> 1 OR NEW.supersedes_review_id IS NOT NULL THEN
      RAISE EXCEPTION 'first teacher review must start at one'
        USING ERRCODE = '23514';
    END IF;
  ELSIF NEW.review_no <> latest_no + 1 OR NEW.supersedes_review_id IS DISTINCT FROM latest_id THEN
    RAISE EXCEPTION 'teacher review must supersede latest review'
      USING ERRCODE = '23514';
  END IF;
  RETURN NEW;
END;
$$;

DO $$
DECLARE
  table_name TEXT;
BEGIN
  FOREACH table_name IN ARRAY ARRAY[
    'calibration_prediction_history','calibration_prediction_revision',
    'calibration_prediction_lock','calibration_performance_observation',
    'calibration_assessment_snapshot','calibration_metacognitive_prescription',
    'calibration_transfer_suite','calibration_transfer_trial',
    'calibration_transfer_assessment','calibration_subgroup_drift_report',
    'calibration_teacher_review_event'
  ] LOOP
    EXECUTE format('DROP TRIGGER IF EXISTS trg_%s_append_only ON app.%I', table_name, table_name);
    EXECUTE format(
      'CREATE TRIGGER trg_%s_append_only BEFORE UPDATE OR DELETE ON app.%I '
      'FOR EACH ROW EXECUTE FUNCTION audit.reject_measurement_mutation()',
      table_name, table_name
    );
    EXECUTE format('DROP TRIGGER IF EXISTS trg_%s_session_learner ON app.%I', table_name, table_name);
    EXECUTE format(
      'CREATE TRIGGER trg_%s_session_learner BEFORE INSERT ON app.%I '
      'FOR EACH ROW EXECUTE FUNCTION audit.enforce_calibration_session_learner()',
      table_name, table_name
    );
    EXECUTE format('ALTER TABLE app.%I ENABLE ROW LEVEL SECURITY', table_name);
  END LOOP;
END;
$$;

DO $$
DECLARE
  table_name TEXT;
BEGIN
  FOREACH table_name IN ARRAY ARRAY[
    'calibration_prediction_revision','calibration_performance_observation',
    'calibration_assessment_snapshot','calibration_metacognitive_prescription',
    'calibration_transfer_trial','calibration_transfer_assessment',
    'calibration_teacher_review_event'
  ] LOOP
    EXECUTE format('DROP TRIGGER IF EXISTS trg_%s_evidence_ownership ON app.%I', table_name, table_name);
    EXECUTE format(
      'CREATE TRIGGER trg_%s_evidence_ownership BEFORE INSERT ON app.%I '
      'FOR EACH ROW EXECUTE FUNCTION audit.enforce_calibration_evidence_ownership()',
      table_name, table_name
    );
  END LOOP;
END;
$$;

DROP TRIGGER IF EXISTS trg_calibration_prediction_revision_contract
  ON app.calibration_prediction_revision;
CREATE TRIGGER trg_calibration_prediction_revision_contract
  BEFORE INSERT ON app.calibration_prediction_revision
  FOR EACH ROW EXECUTE FUNCTION audit.enforce_calibration_prediction_revision();
DROP TRIGGER IF EXISTS trg_calibration_prediction_lock_contract
  ON app.calibration_prediction_lock;
CREATE TRIGGER trg_calibration_prediction_lock_contract
  BEFORE INSERT ON app.calibration_prediction_lock
  FOR EACH ROW EXECUTE FUNCTION audit.enforce_calibration_prediction_lock();
DROP TRIGGER IF EXISTS trg_calibration_observation_reveal_contract
  ON app.calibration_performance_observation;
CREATE TRIGGER trg_calibration_observation_reveal_contract
  BEFORE INSERT ON app.calibration_performance_observation
  FOR EACH ROW EXECUTE FUNCTION audit.enforce_calibration_observation_reveal();
DROP TRIGGER IF EXISTS trg_calibration_assessment_chain
  ON app.calibration_assessment_snapshot;
CREATE TRIGGER trg_calibration_assessment_chain
  BEFORE INSERT ON app.calibration_assessment_snapshot
  FOR EACH ROW EXECUTE FUNCTION audit.enforce_calibration_assessment_chain();
DROP TRIGGER IF EXISTS trg_calibration_transfer_assessment_contract
  ON app.calibration_transfer_assessment;
CREATE TRIGGER trg_calibration_transfer_assessment_contract
  BEFORE INSERT ON app.calibration_transfer_assessment
  FOR EACH ROW EXECUTE FUNCTION audit.enforce_calibration_transfer_children();
DROP TRIGGER IF EXISTS trg_calibration_subgroup_drift_contract
  ON app.calibration_subgroup_drift_report;
CREATE TRIGGER trg_calibration_subgroup_drift_contract
  BEFORE INSERT ON app.calibration_subgroup_drift_report
  FOR EACH ROW EXECUTE FUNCTION audit.enforce_calibration_transfer_children();
DROP TRIGGER IF EXISTS trg_calibration_teacher_review_contract
  ON app.calibration_teacher_review_event;
CREATE TRIGGER trg_calibration_teacher_review_contract
  BEFORE INSERT ON app.calibration_teacher_review_event
  FOR EACH ROW EXECUTE FUNCTION audit.enforce_calibration_teacher_review();

DO $$
DECLARE
  table_name TEXT;
BEGIN
  FOREACH table_name IN ARRAY ARRAY[
    'calibration_assessment_snapshot','calibration_metacognitive_prescription',
    'calibration_transfer_assessment','calibration_subgroup_drift_report',
    'calibration_teacher_review_event'
  ] LOOP
    EXECUTE format('DROP TRIGGER IF EXISTS trg_%s_payload_boundary ON app.%I', table_name, table_name);
    EXECUTE format(
      'CREATE TRIGGER trg_%s_payload_boundary BEFORE INSERT ON app.%I '
      'FOR EACH ROW EXECUTE FUNCTION audit.enforce_calibration_payload_boundary()',
      table_name, table_name
    );
  END LOOP;
END;
$$;

-- Human SELECT: learner-self, teacher cohort, admin. AI SELECT/INSERT: evaluator only.
DO $$
DECLARE
  table_name TEXT;
BEGIN
  FOREACH table_name IN ARRAY ARRAY[
    'calibration_prediction_history','calibration_prediction_revision',
    'calibration_prediction_lock','calibration_performance_observation',
    'calibration_assessment_snapshot','calibration_metacognitive_prescription',
    'calibration_transfer_suite','calibration_transfer_trial',
    'calibration_transfer_assessment','calibration_subgroup_drift_report'
  ] LOOP
    EXECUTE format('DROP POLICY IF EXISTS p_%s_select ON app.%I', table_name, table_name);
    EXECUTE format(
      'CREATE POLICY p_%s_select ON app.%I FOR SELECT USING ('
      '(app.is_ai_context() AND current_setting(''app.current_ai_view'', true) = ''evaluator'') OR '
      '(NOT app.is_ai_context() AND ('
      'app.current_role_name() = ''admin'' OR '
      '(app.current_role_name() = ''learner'' AND learner_id = app.current_uid()) OR '
      '(app.current_role_name() = ''instructor'' AND EXISTS ('
      'SELECT 1 FROM app.app_user u WHERE u.user_id = learner_id '
      'AND u.cohort = current_setting(''app.current_cohort'', true)))))'
      ')',
      table_name, table_name
    );
  END LOOP;
END;
$$;

DO $$
DECLARE
  table_name TEXT;
BEGIN
  FOREACH table_name IN ARRAY ARRAY[
    'calibration_prediction_history','calibration_prediction_revision','calibration_prediction_lock'
  ] LOOP
    EXECUTE format('DROP POLICY IF EXISTS p_%s_insert ON app.%I', table_name, table_name);
    EXECUTE format(
      'CREATE POLICY p_%s_insert ON app.%I FOR INSERT WITH CHECK ('
      'NOT app.is_ai_context() AND app.current_role_name() = ''learner'' '
      'AND learner_id = app.current_uid())',
      table_name, table_name
    );
  END LOOP;
END;
$$;

DO $$
DECLARE
  table_name TEXT;
BEGIN
  FOREACH table_name IN ARRAY ARRAY[
    'calibration_performance_observation','calibration_assessment_snapshot',
    'calibration_metacognitive_prescription','calibration_transfer_suite',
    'calibration_transfer_trial','calibration_transfer_assessment',
    'calibration_subgroup_drift_report'
  ] LOOP
    EXECUTE format('DROP POLICY IF EXISTS p_%s_insert ON app.%I', table_name, table_name);
    EXECUTE format(
      'CREATE POLICY p_%s_insert ON app.%I FOR INSERT WITH CHECK ('
      'app.is_ai_context() AND current_setting(''app.current_ai_view'', true) = ''evaluator'')',
      table_name, table_name
    );
  END LOOP;
END;
$$;

DROP POLICY IF EXISTS p_calibration_teacher_review_event_select
  ON app.calibration_teacher_review_event;
DROP POLICY IF EXISTS p_calibration_teacher_review_event_insert
  ON app.calibration_teacher_review_event;
CREATE POLICY p_calibration_teacher_review_event_select
  ON app.calibration_teacher_review_event FOR SELECT USING (
    (app.is_ai_context() AND current_setting('app.current_ai_view', true) = 'evaluator')
    OR (NOT app.is_ai_context() AND (
      app.current_role_name() = 'admin'
      OR (app.current_role_name() = 'learner' AND learner_id = app.current_uid())
      OR (app.current_role_name() = 'instructor' AND EXISTS (
        SELECT 1 FROM app.app_user u
        WHERE u.user_id = learner_id
          AND u.cohort = current_setting('app.current_cohort', true)
      ))
    ))
  );
CREATE POLICY p_calibration_teacher_review_event_insert
  ON app.calibration_teacher_review_event FOR INSERT WITH CHECK (
    NOT app.is_ai_context()
    AND (
      app.current_role_name() = 'admin'
      OR (
        app.current_role_name() = 'instructor'
        AND created_by_uid = app.current_uid()
        AND created_by_role = 'instructor'
        AND EXISTS (
          SELECT 1 FROM app.app_user u
          WHERE u.user_id = learner_id
            AND u.cohort = current_setting('app.current_cohort', true)
        )
      )
    )
  );