build(db): 初始化本地依赖与 Prisma 基线

提供 PG18/Redis7.4/S3 本地 compose、环境变量样例与 Prisma 首版迁移；建立 outbox_events、idempotency_keys、system_configs 三张平台骨架表及幂等种子。MinIO 镜像不可得，本地以 S3Mock 替代。

prisma/migrations/20261102083445_init_platform_baseline/migration.sql

@@ -0,0 +1,60 @@
+-- CreateTable
+CREATE TABLE "outbox_events" (
+    "id" CHAR(26) NOT NULL,
+    "aggregate_type" VARCHAR(64) NOT NULL,
+    "aggregate_id" CHAR(26) NOT NULL,
+    "event_type" VARCHAR(128) NOT NULL,
+    "payload_json" JSONB NOT NULL,
+    "trace_id" VARCHAR(64),
+    "occurred_at" TIMESTAMPTZ(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "published_at" TIMESTAMPTZ(3),
+    "attempts" INTEGER NOT NULL DEFAULT 0,
+    "last_error" TEXT,
+
+    CONSTRAINT "outbox_events_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "idempotency_keys" (
+    "id" CHAR(26) NOT NULL,
+    "scope" VARCHAR(64) NOT NULL,
+    "key" VARCHAR(128) NOT NULL,
+    "request_hash" VARCHAR(64) NOT NULL,
+    "response_status" INTEGER,
+    "response_body" JSONB,
+    "created_at" TIMESTAMPTZ(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "expires_at" TIMESTAMPTZ(3) NOT NULL,
+
+    CONSTRAINT "idempotency_keys_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "system_configs" (
+    "id" CHAR(26) NOT NULL,
+    "config_key" VARCHAR(128) NOT NULL,
+    "config_value" JSONB NOT NULL,
+    "value_type" VARCHAR(16) NOT NULL,
+    "description" VARCHAR(255) NOT NULL DEFAULT '',
+    "version" INTEGER NOT NULL DEFAULT 1,
+    "is_editable" BOOLEAN NOT NULL DEFAULT true,
+    "created_at" TIMESTAMPTZ(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updated_at" TIMESTAMPTZ(3) NOT NULL,
+    "updated_by" CHAR(26),
+
+    CONSTRAINT "system_configs_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE INDEX "outbox_events_published_at_occurred_at_idx" ON "outbox_events"("published_at", "occurred_at");
+
+-- CreateIndex
+CREATE INDEX "outbox_events_aggregate_type_aggregate_id_idx" ON "outbox_events"("aggregate_type", "aggregate_id");
+
+-- CreateIndex
+CREATE INDEX "idempotency_keys_expires_at_idx" ON "idempotency_keys"("expires_at");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "idempotency_keys_scope_key_key" ON "idempotency_keys"("scope", "key");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "system_configs_config_key_key" ON "system_configs"("config_key");

prisma/migrations/migration_lock.toml

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+# Please do not edit this file manually
+# It should be added in your version-control system (e.g., Git)
+provider = "postgresql"