-- CreateEnum
CREATE TYPE "ai_privacy_level" AS ENUM ('AI_OFF', 'TRANSCRIPTION_ONLY', 'TRANSCRIPTION_AND_ANALYSIS');

-- CreateEnum
CREATE TYPE "ai_provider_scope" AS ENUM ('GLOBAL', 'TENANT');

-- CreateEnum
CREATE TYPE "ai_capability" AS ENUM ('TRANSCRIPTION', 'DIARIZATION', 'TEXT_ANALYSIS', 'STRUCTURED_OUTPUT', 'EMBEDDINGS', 'REALTIME_AUDIO');

-- CreateEnum
CREATE TYPE "ai_prompt_purpose" AS ENUM ('ANALYSIS', 'SCORECARD');

-- CreateEnum
CREATE TYPE "ai_job_type" AS ENUM ('TRANSCRIPTION', 'ANALYSIS', 'REANALYSIS');

-- CreateEnum
CREATE TYPE "ai_job_status" AS ENUM ('PENDING', 'PROCESSING', 'COMPLETED', 'FAILED', 'RETRYING', 'CANCELLED');

-- CreateEnum
CREATE TYPE "transcription_status" AS ENUM ('PENDING', 'COMPLETED', 'FAILED');

-- CreateEnum
CREATE TYPE "transcript_speaker" AS ENUM ('AGENT', 'CUSTOMER', 'UNKNOWN');

-- CreateEnum
CREATE TYPE "ai_usage_type" AS ENUM ('AI_TRANSCRIPTION_SECONDS', 'AI_ANALYSIS_REQUEST', 'AI_INPUT_TOKENS', 'AI_OUTPUT_TOKENS');

-- AlterTable
ALTER TABLE "campaigns" ADD COLUMN     "analysis_prompt_template_id" UUID;

-- AlterTable
ALTER TABLE "queues" ADD COLUMN     "ai_privacy_level" "ai_privacy_level";

-- AlterTable
ALTER TABLE "tenants" ADD COLUMN     "ai_privacy_level" "ai_privacy_level" NOT NULL DEFAULT 'AI_OFF';

-- CreateTable
CREATE TABLE "ai_providers" (
    "id" UUID NOT NULL,
    "scope" "ai_provider_scope" NOT NULL,
    "tenant_id" UUID,
    "provider_type" TEXT NOT NULL,
    "name" TEXT NOT NULL,
    "base_url" TEXT,
    "encrypted_api_key" TEXT NOT NULL,
    "organization" TEXT,
    "project" TEXT,
    "enabled" BOOLEAN NOT NULL DEFAULT true,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updated_at" TIMESTAMP(3) NOT NULL,

    CONSTRAINT "ai_providers_pkey" PRIMARY KEY ("id")
);

-- CreateTable
CREATE TABLE "ai_models" (
    "id" UUID NOT NULL,
    "tenant_id" UUID,
    "provider_id" UUID NOT NULL,
    "external_model_id" TEXT NOT NULL,
    "display_name" TEXT NOT NULL,
    "capabilities" "ai_capability"[],
    "input_cost" DOUBLE PRECISION,
    "output_cost" DOUBLE PRECISION,
    "audio_cost" DOUBLE PRECISION,
    "enabled" BOOLEAN NOT NULL DEFAULT true,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updated_at" TIMESTAMP(3) NOT NULL,

    CONSTRAINT "ai_models_pkey" PRIMARY KEY ("id")
);

-- CreateTable
CREATE TABLE "ai_prompt_templates" (
    "id" UUID NOT NULL,
    "tenant_id" UUID,
    "purpose" "ai_prompt_purpose" NOT NULL,
    "name" TEXT NOT NULL,
    "active_version_id" UUID,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updated_at" TIMESTAMP(3) NOT NULL,

    CONSTRAINT "ai_prompt_templates_pkey" PRIMARY KEY ("id")
);

-- CreateTable
CREATE TABLE "ai_prompt_versions" (
    "id" UUID NOT NULL,
    "tenant_id" UUID,
    "template_id" UUID NOT NULL,
    "version" INTEGER NOT NULL,
    "content" TEXT NOT NULL,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,

    CONSTRAINT "ai_prompt_versions_pkey" PRIMARY KEY ("id")
);

-- CreateTable
CREATE TABLE "ai_jobs" (
    "id" UUID NOT NULL,
    "tenant_id" UUID NOT NULL,
    "call_id" UUID NOT NULL,
    "type" "ai_job_type" NOT NULL,
    "status" "ai_job_status" NOT NULL DEFAULT 'PENDING',
    "attempt_count" INTEGER NOT NULL DEFAULT 0,
    "max_attempts" INTEGER NOT NULL DEFAULT 5,
    "last_error" TEXT,
    "scheduled_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updated_at" TIMESTAMP(3) NOT NULL,
    "completed_at" TIMESTAMP(3),

    CONSTRAINT "ai_jobs_pkey" PRIMARY KEY ("id")
);

-- CreateTable
CREATE TABLE "call_transcriptions" (
    "id" UUID NOT NULL,
    "tenant_id" UUID NOT NULL,
    "call_id" UUID NOT NULL,
    "provider_id" UUID,
    "model" TEXT,
    "language" TEXT,
    "text" TEXT,
    "status" "transcription_status" NOT NULL DEFAULT 'PENDING',
    "duration_seconds" INTEGER,
    "provider_request_id" TEXT,
    "input_usage" INTEGER,
    "output_usage" INTEGER,
    "provider_cost" DOUBLE PRECISION,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,

    CONSTRAINT "call_transcriptions_pkey" PRIMARY KEY ("id")
);

-- CreateTable
CREATE TABLE "call_transcript_segments" (
    "id" UUID NOT NULL,
    "tenant_id" UUID NOT NULL,
    "transcription_id" UUID NOT NULL,
    "speaker" "transcript_speaker" NOT NULL DEFAULT 'UNKNOWN',
    "start_ms" INTEGER NOT NULL,
    "end_ms" INTEGER NOT NULL,
    "text" TEXT NOT NULL,
    "confidence" DOUBLE PRECISION,

    CONSTRAINT "call_transcript_segments_pkey" PRIMARY KEY ("id")
);

-- CreateTable
CREATE TABLE "call_ai_analyses" (
    "id" UUID NOT NULL,
    "tenant_id" UUID NOT NULL,
    "call_id" UUID NOT NULL,
    "provider_id" UUID,
    "model" TEXT,
    "summary" TEXT,
    "customer_intent" TEXT,
    "outcome" TEXT,
    "sentiment" TEXT,
    "topics" TEXT[],
    "keywords" TEXT[],
    "objections" TEXT[],
    "questions" TEXT[],
    "action_items" TEXT[],
    "compliance_flags" TEXT[],
    "risk_flags" TEXT[],
    "quality_score" INTEGER,
    "agent_score" INTEGER,
    "customer_sentiment_score" DOUBLE PRECISION,
    "sales_opportunity" BOOLEAN,
    "next_best_action" TEXT,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,

    CONSTRAINT "call_ai_analyses_pkey" PRIMARY KEY ("id")
);

-- CreateTable
CREATE TABLE "quality_scorecards" (
    "id" UUID NOT NULL,
    "tenant_id" UUID NOT NULL,
    "name" TEXT NOT NULL,
    "enabled" BOOLEAN NOT NULL DEFAULT true,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
    "updated_at" TIMESTAMP(3) NOT NULL,

    CONSTRAINT "quality_scorecards_pkey" PRIMARY KEY ("id")
);

-- CreateTable
CREATE TABLE "quality_scorecard_items" (
    "id" UUID NOT NULL,
    "tenant_id" UUID NOT NULL,
    "scorecard_id" UUID NOT NULL,
    "name" TEXT NOT NULL,
    "weight" DOUBLE PRECISION NOT NULL DEFAULT 1,
    "description" TEXT,
    "evaluation_prompt" TEXT,

    CONSTRAINT "quality_scorecard_items_pkey" PRIMARY KEY ("id")
);

-- CreateTable
CREATE TABLE "quality_evaluations" (
    "id" UUID NOT NULL,
    "tenant_id" UUID NOT NULL,
    "call_id" UUID NOT NULL,
    "scorecard_id" UUID NOT NULL,
    "score" INTEGER NOT NULL,
    "criterion_scores" JSONB NOT NULL,
    "summary_justification" TEXT,
    "created_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,

    CONSTRAINT "quality_evaluations_pkey" PRIMARY KEY ("id")
);

-- CreateTable
CREATE TABLE "ai_usage_records" (
    "id" UUID NOT NULL,
    "tenant_id" UUID NOT NULL,
    "call_id" UUID,
    "type" "ai_usage_type" NOT NULL,
    "quantity" DOUBLE PRECISION NOT NULL,
    "provider_id" UUID,
    "model" TEXT,
    "occurred_at" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,

    CONSTRAINT "ai_usage_records_pkey" PRIMARY KEY ("id")
);

-- CreateIndex
CREATE INDEX "ai_providers_tenant_id_idx" ON "ai_providers"("tenant_id");

-- CreateIndex
CREATE INDEX "ai_models_tenant_id_idx" ON "ai_models"("tenant_id");

-- CreateIndex
CREATE UNIQUE INDEX "ai_models_provider_id_external_model_id_key" ON "ai_models"("provider_id", "external_model_id");

-- CreateIndex
CREATE UNIQUE INDEX "ai_prompt_templates_active_version_id_key" ON "ai_prompt_templates"("active_version_id");

-- CreateIndex
CREATE INDEX "ai_prompt_templates_tenant_id_idx" ON "ai_prompt_templates"("tenant_id");

-- CreateIndex
CREATE INDEX "ai_prompt_versions_tenant_id_idx" ON "ai_prompt_versions"("tenant_id");

-- CreateIndex
CREATE UNIQUE INDEX "ai_prompt_versions_template_id_version_key" ON "ai_prompt_versions"("template_id", "version");

-- CreateIndex
CREATE INDEX "ai_jobs_tenant_id_status_scheduled_at_idx" ON "ai_jobs"("tenant_id", "status", "scheduled_at");

-- CreateIndex
CREATE INDEX "ai_jobs_tenant_id_call_id_idx" ON "ai_jobs"("tenant_id", "call_id");

-- CreateIndex
CREATE INDEX "call_transcriptions_tenant_id_call_id_idx" ON "call_transcriptions"("tenant_id", "call_id");

-- CreateIndex
CREATE INDEX "call_transcript_segments_tenant_id_idx" ON "call_transcript_segments"("tenant_id");

-- CreateIndex
CREATE INDEX "call_transcript_segments_transcription_id_idx" ON "call_transcript_segments"("transcription_id");

-- CreateIndex
CREATE INDEX "call_ai_analyses_tenant_id_call_id_idx" ON "call_ai_analyses"("tenant_id", "call_id");

-- CreateIndex
CREATE INDEX "quality_scorecards_tenant_id_idx" ON "quality_scorecards"("tenant_id");

-- CreateIndex
CREATE INDEX "quality_scorecard_items_tenant_id_idx" ON "quality_scorecard_items"("tenant_id");

-- CreateIndex
CREATE INDEX "quality_scorecard_items_scorecard_id_idx" ON "quality_scorecard_items"("scorecard_id");

-- CreateIndex
CREATE INDEX "quality_evaluations_tenant_id_call_id_idx" ON "quality_evaluations"("tenant_id", "call_id");

-- CreateIndex
CREATE INDEX "ai_usage_records_tenant_id_occurred_at_idx" ON "ai_usage_records"("tenant_id", "occurred_at");

-- CreateIndex
CREATE INDEX "ai_usage_records_tenant_id_type_idx" ON "ai_usage_records"("tenant_id", "type");

-- AddForeignKey
ALTER TABLE "campaigns" ADD CONSTRAINT "campaigns_analysis_prompt_template_id_fkey" FOREIGN KEY ("analysis_prompt_template_id") REFERENCES "ai_prompt_templates"("id") ON DELETE SET NULL ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "ai_providers" ADD CONSTRAINT "ai_providers_tenant_id_fkey" FOREIGN KEY ("tenant_id") REFERENCES "tenants"("id") ON DELETE SET NULL ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "ai_models" ADD CONSTRAINT "ai_models_tenant_id_fkey" FOREIGN KEY ("tenant_id") REFERENCES "tenants"("id") ON DELETE SET NULL ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "ai_models" ADD CONSTRAINT "ai_models_provider_id_fkey" FOREIGN KEY ("provider_id") REFERENCES "ai_providers"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "ai_prompt_templates" ADD CONSTRAINT "ai_prompt_templates_tenant_id_fkey" FOREIGN KEY ("tenant_id") REFERENCES "tenants"("id") ON DELETE SET NULL ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "ai_prompt_templates" ADD CONSTRAINT "ai_prompt_templates_active_version_id_fkey" FOREIGN KEY ("active_version_id") REFERENCES "ai_prompt_versions"("id") ON DELETE SET NULL ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "ai_prompt_versions" ADD CONSTRAINT "ai_prompt_versions_tenant_id_fkey" FOREIGN KEY ("tenant_id") REFERENCES "tenants"("id") ON DELETE SET NULL ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "ai_prompt_versions" ADD CONSTRAINT "ai_prompt_versions_template_id_fkey" FOREIGN KEY ("template_id") REFERENCES "ai_prompt_templates"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "ai_jobs" ADD CONSTRAINT "ai_jobs_tenant_id_fkey" FOREIGN KEY ("tenant_id") REFERENCES "tenants"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "ai_jobs" ADD CONSTRAINT "ai_jobs_call_id_fkey" FOREIGN KEY ("call_id") REFERENCES "calls"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "call_transcriptions" ADD CONSTRAINT "call_transcriptions_tenant_id_fkey" FOREIGN KEY ("tenant_id") REFERENCES "tenants"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "call_transcriptions" ADD CONSTRAINT "call_transcriptions_call_id_fkey" FOREIGN KEY ("call_id") REFERENCES "calls"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "call_transcriptions" ADD CONSTRAINT "call_transcriptions_provider_id_fkey" FOREIGN KEY ("provider_id") REFERENCES "ai_providers"("id") ON DELETE SET NULL ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "call_transcript_segments" ADD CONSTRAINT "call_transcript_segments_tenant_id_fkey" FOREIGN KEY ("tenant_id") REFERENCES "tenants"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "call_transcript_segments" ADD CONSTRAINT "call_transcript_segments_transcription_id_fkey" FOREIGN KEY ("transcription_id") REFERENCES "call_transcriptions"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "call_ai_analyses" ADD CONSTRAINT "call_ai_analyses_tenant_id_fkey" FOREIGN KEY ("tenant_id") REFERENCES "tenants"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "call_ai_analyses" ADD CONSTRAINT "call_ai_analyses_call_id_fkey" FOREIGN KEY ("call_id") REFERENCES "calls"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "call_ai_analyses" ADD CONSTRAINT "call_ai_analyses_provider_id_fkey" FOREIGN KEY ("provider_id") REFERENCES "ai_providers"("id") ON DELETE SET NULL ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "quality_scorecards" ADD CONSTRAINT "quality_scorecards_tenant_id_fkey" FOREIGN KEY ("tenant_id") REFERENCES "tenants"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "quality_scorecard_items" ADD CONSTRAINT "quality_scorecard_items_tenant_id_fkey" FOREIGN KEY ("tenant_id") REFERENCES "tenants"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "quality_scorecard_items" ADD CONSTRAINT "quality_scorecard_items_scorecard_id_fkey" FOREIGN KEY ("scorecard_id") REFERENCES "quality_scorecards"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "quality_evaluations" ADD CONSTRAINT "quality_evaluations_tenant_id_fkey" FOREIGN KEY ("tenant_id") REFERENCES "tenants"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "quality_evaluations" ADD CONSTRAINT "quality_evaluations_call_id_fkey" FOREIGN KEY ("call_id") REFERENCES "calls"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "quality_evaluations" ADD CONSTRAINT "quality_evaluations_scorecard_id_fkey" FOREIGN KEY ("scorecard_id") REFERENCES "quality_scorecards"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "ai_usage_records" ADD CONSTRAINT "ai_usage_records_tenant_id_fkey" FOREIGN KEY ("tenant_id") REFERENCES "tenants"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "ai_usage_records" ADD CONSTRAINT "ai_usage_records_call_id_fkey" FOREIGN KEY ("call_id") REFERENCES "calls"("id") ON DELETE SET NULL ON UPDATE CASCADE;

-- AddForeignKey
ALTER TABLE "ai_usage_records" ADD CONSTRAINT "ai_usage_records_provider_id_fkey" FOREIGN KEY ("provider_id") REFERENCES "ai_providers"("id") ON DELETE SET NULL ON UPDATE CASCADE;

-- Tabelas de negocio tenant-scoped: RLS obrigatorio em todas (ver docs/TENANT_ISOLATION.md).
-- RLS padrao (tenant_id NOT NULL, so' visivel/gravavel no proprio tenant).
ALTER TABLE "ai_jobs" ENABLE ROW LEVEL SECURITY;
ALTER TABLE "ai_jobs" FORCE ROW LEVEL SECURITY;
CREATE POLICY "tenant_isolation" ON "ai_jobs"
  USING (tenant_id = NULLIF(current_setting('app.current_tenant_id', true), '')::uuid);

ALTER TABLE "call_transcriptions" ENABLE ROW LEVEL SECURITY;
ALTER TABLE "call_transcriptions" FORCE ROW LEVEL SECURITY;
CREATE POLICY "tenant_isolation" ON "call_transcriptions"
  USING (tenant_id = NULLIF(current_setting('app.current_tenant_id', true), '')::uuid);

ALTER TABLE "call_transcript_segments" ENABLE ROW LEVEL SECURITY;
ALTER TABLE "call_transcript_segments" FORCE ROW LEVEL SECURITY;
CREATE POLICY "tenant_isolation" ON "call_transcript_segments"
  USING (tenant_id = NULLIF(current_setting('app.current_tenant_id', true), '')::uuid);

ALTER TABLE "call_ai_analyses" ENABLE ROW LEVEL SECURITY;
ALTER TABLE "call_ai_analyses" FORCE ROW LEVEL SECURITY;
CREATE POLICY "tenant_isolation" ON "call_ai_analyses"
  USING (tenant_id = NULLIF(current_setting('app.current_tenant_id', true), '')::uuid);

ALTER TABLE "quality_scorecards" ENABLE ROW LEVEL SECURITY;
ALTER TABLE "quality_scorecards" FORCE ROW LEVEL SECURITY;
CREATE POLICY "tenant_isolation" ON "quality_scorecards"
  USING (tenant_id = NULLIF(current_setting('app.current_tenant_id', true), '')::uuid);

ALTER TABLE "quality_scorecard_items" ENABLE ROW LEVEL SECURITY;
ALTER TABLE "quality_scorecard_items" FORCE ROW LEVEL SECURITY;
CREATE POLICY "tenant_isolation" ON "quality_scorecard_items"
  USING (tenant_id = NULLIF(current_setting('app.current_tenant_id', true), '')::uuid);

ALTER TABLE "quality_evaluations" ENABLE ROW LEVEL SECURITY;
ALTER TABLE "quality_evaluations" FORCE ROW LEVEL SECURITY;
CREATE POLICY "tenant_isolation" ON "quality_evaluations"
  USING (tenant_id = NULLIF(current_setting('app.current_tenant_id', true), '')::uuid);

ALTER TABLE "ai_usage_records" ENABLE ROW LEVEL SECURITY;
ALTER TABLE "ai_usage_records" FORCE ROW LEVEL SECURITY;
CREATE POLICY "tenant_isolation" ON "ai_usage_records"
  USING (tenant_id = NULLIF(current_setting('app.current_tenant_id', true), '')::uuid);

-- RLS hibrida (tenant_id NULLABLE): scope=GLOBAL (tenant_id null, cadastrado
-- pelo platform admin) e' visivel de QUALQUER contexto de tenant (mesma
-- tecnica ja usada pra tenant_memberships na descoberta de tenant durante
-- login, agente.md secao 100 "Provider Global e BYOK"). Quem pode ESCREVER
-- num registro GLOBAL e' decidido na camada de servico (so' platform
-- admin), nao pela RLS -- RLS aqui so' garante isolamento entre tenants,
-- nunca vaza BYOK de um tenant pra outro.
ALTER TABLE "ai_providers" ENABLE ROW LEVEL SECURITY;
ALTER TABLE "ai_providers" FORCE ROW LEVEL SECURITY;
CREATE POLICY "tenant_isolation" ON "ai_providers"
  USING (tenant_id = NULLIF(current_setting('app.current_tenant_id', true), '')::uuid OR tenant_id IS NULL);

ALTER TABLE "ai_models" ENABLE ROW LEVEL SECURITY;
ALTER TABLE "ai_models" FORCE ROW LEVEL SECURITY;
CREATE POLICY "tenant_isolation" ON "ai_models"
  USING (tenant_id = NULLIF(current_setting('app.current_tenant_id', true), '')::uuid OR tenant_id IS NULL);

ALTER TABLE "ai_prompt_templates" ENABLE ROW LEVEL SECURITY;
ALTER TABLE "ai_prompt_templates" FORCE ROW LEVEL SECURITY;
CREATE POLICY "tenant_isolation" ON "ai_prompt_templates"
  USING (tenant_id = NULLIF(current_setting('app.current_tenant_id', true), '')::uuid OR tenant_id IS NULL);

ALTER TABLE "ai_prompt_versions" ENABLE ROW LEVEL SECURITY;
ALTER TABLE "ai_prompt_versions" FORCE ROW LEVEL SECURITY;
CREATE POLICY "tenant_isolation" ON "ai_prompt_versions"
  USING (tenant_id = NULLIF(current_setting('app.current_tenant_id', true), '')::uuid OR tenant_id IS NULL);