CREATE TABLE "AppConfig" (
    "id" VARCHAR(191) NOT NULL, "key" VARCHAR(100) NOT NULL, "value" TEXT NOT NULL,
    "description" VARCHAR(500), "environment" VARCHAR(32) NOT NULL DEFAULT 'production',
    "updatedBy" VARCHAR(100), "createdAt" DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    "updatedAt" DATETIME(3) NOT NULL,
    UNIQUE INDEX "AppConfig_key_key"("key"), PRIMARY KEY ("id")
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE TABLE "FeatureFlag" (
    "id" VARCHAR(191) NOT NULL, "name" VARCHAR(100) NOT NULL, "enabled" BOOLEAN NOT NULL DEFAULT false,
    "description" VARCHAR(500), "rolloutPct" INTEGER NOT NULL DEFAULT 100,
    "updatedBy" VARCHAR(100), "createdAt" DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    "updatedAt" DATETIME(3) NOT NULL,
    UNIQUE INDEX "FeatureFlag_name_key"("name"), PRIMARY KEY ("id")
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

CREATE TABLE "ConfigChangeLog" (
    "id" VARCHAR(191) NOT NULL, "entityType" VARCHAR(32) NOT NULL, "entityId" VARCHAR(100) NOT NULL,
    "field" VARCHAR(100) NOT NULL, "oldValue" TEXT, "newValue" TEXT,
    "changedBy" VARCHAR(100), "createdAt" DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
    INDEX "ConfigChangeLog_entityType_entityId_idx"("entityType", "entityId"),
    INDEX "ConfigChangeLog_createdAt_idx"("createdAt"), PRIMARY KEY ("id")
) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;