Initial commit: 风影 OA 全栈源码（API/Web/Flutter/IM）

含 Phase 1.1 IM seq 排序、断线重连、多端已读同步与微信式语音转文字 UI。
排除 node_modules、构建产物、安装包与 .env 密钥。

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/api/prisma/migrations/20260830170000_labor_contracts/migration.sql

@@ -0,0 +1,27 @@
+-- CreateTable
+CREATE TABLE "LaborContract" (
+    "id" TEXT NOT NULL,
+    "tenantId" TEXT NOT NULL DEFAULT '1',
+    "employeeId" TEXT NOT NULL,
+    "contractNo" TEXT,
+    "startAt" TIMESTAMP(3),
+    "endAt" TIMESTAMP(3),
+    "remark" TEXT,
+    "createdById" TEXT,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "LaborContract_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE INDEX "LaborContract_employeeId_idx" ON "LaborContract"("employeeId");
+
+-- CreateIndex
+CREATE INDEX "LaborContract_tenantId_createdAt_idx" ON "LaborContract"("tenantId", "createdAt");
+
+-- AddForeignKey
+ALTER TABLE "LaborContract" ADD CONSTRAINT "LaborContract_employeeId_fkey" FOREIGN KEY ("employeeId") REFERENCES "Employee"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "LaborContract" ADD CONSTRAINT "LaborContract_createdById_fkey" FOREIGN KEY ("createdById") REFERENCES "User"("id") ON DELETE SET NULL ON UPDATE CASCADE;