CREATE TABLE assessor_ai_overview_runs (
  id text PRIMARY KEY,
  project_id text NOT NULL REFERENCES assessor_projects(id) ON DELETE CASCADE,
  scope_key text NOT NULL,
  assessment_ids text[] NOT NULL DEFAULT '{}',
  scan_run_ids text[] NOT NULL DEFAULT '{}',
  idempotency_key text NOT NULL,
  run_status text NOT NULL CHECK (run_status IN ('queued', 'running', 'succeeded', 'failed')),
  input_hash text NOT NULL CHECK (input_hash ~ '^[a-f0-9]{64}$'),
  prompt_version text NOT NULL,
  output_schema_version integer NOT NULL,
  model text NOT NULL,
  created_at timestamptz NOT NULL,
  updated_at timestamptz NOT NULL,
  data jsonb NOT NULL,
  CONSTRAINT assessor_ai_overview_runs_idempotency_uq UNIQUE (project_id, scope_key, idempotency_key)
);

CREATE UNIQUE INDEX assessor_ai_overview_runs_active_scope_uq
  ON assessor_ai_overview_runs (project_id, scope_key)
  WHERE run_status IN ('queued', 'running');

CREATE INDEX assessor_ai_overview_runs_scope_created_idx
  ON assessor_ai_overview_runs (project_id, scope_key, created_at DESC, id DESC);