Harden API, data layer, and autosave; add validation, pagination, migrations

- Enforce task ownership on PATCH/DELETE /api/tasks (was: any signed-in
  user could edit or delete anyone's tasks)
- Validate all API request bodies with zod; escape user content and
  restrict links to http(s) in the Drive export; block reverting a
  SUBMITTED report
- Add @@unique([userId, date]) on Report with upsert to eliminate the
  duplicate-daily-report race; switch startup from
  `prisma db push --accept-data-loss` to `prisma migrate deploy` with
  automatic baselining of existing databases (dedup migration merges
  any pre-existing duplicates)
- Autosave: re-queue and retry failed task saves with a visible
  saving/error indicator instead of silently dropping edits
- Paginate and filter GET /api/reports (?date, ?mine, ?q, ?take,
  ?cursor); report form fetches only today's report, admin dashboard
  uses server-side search + Load more
- Type the frontend and lib layer (DTOs in src/types/api.ts); zero
  eslint errors
- Update README and Unraid guide for migrations, upgrade path, and API

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

prisma/migrations/0_init/migration.sql

@@ -0,0 +1,94 @@
+-- CreateTable
+CREATE TABLE "Account" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "userId" TEXT NOT NULL,
+    "type" TEXT NOT NULL,
+    "provider" TEXT NOT NULL,
+    "providerAccountId" TEXT NOT NULL,
+    "refresh_token" TEXT,
+    "access_token" TEXT,
+    "expires_at" INTEGER,
+    "token_type" TEXT,
+    "scope" TEXT,
+    "id_token" TEXT,
+    "session_state" TEXT,
+    CONSTRAINT "Account_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User" ("id") ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+-- CreateTable
+CREATE TABLE "Session" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "sessionToken" TEXT NOT NULL,
+    "userId" TEXT NOT NULL,
+    "expires" DATETIME NOT NULL,
+    CONSTRAINT "Session_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User" ("id") ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+-- CreateTable
+CREATE TABLE "User" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "name" TEXT,
+    "email" TEXT,
+    "emailVerified" DATETIME,
+    "image" TEXT,
+    "role" TEXT NOT NULL DEFAULT 'EMPLOYEE'
+);
+
+-- CreateTable
+CREATE TABLE "VerificationToken" (
+    "identifier" TEXT NOT NULL,
+    "token" TEXT NOT NULL,
+    "expires" DATETIME NOT NULL
+);
+
+-- CreateTable
+CREATE TABLE "Report" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "date" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "managerName" TEXT NOT NULL,
+    "status" TEXT NOT NULL DEFAULT 'IN_PROGRESS',
+    "driveFileId" TEXT,
+    "userId" TEXT NOT NULL,
+    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" DATETIME NOT NULL,
+    CONSTRAINT "Report_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User" ("id") ON DELETE RESTRICT ON UPDATE CASCADE
+);
+
+-- CreateTable
+CREATE TABLE "Task" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "type" TEXT NOT NULL,
+    "description" TEXT NOT NULL,
+    "timeEstimate" TEXT,
+    "notes" TEXT,
+    "status" TEXT DEFAULT 'PENDING',
+    "link" TEXT,
+    "reportId" TEXT NOT NULL,
+    CONSTRAINT "Task_reportId_fkey" FOREIGN KEY ("reportId") REFERENCES "Report" ("id") ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+-- CreateTable
+CREATE TABLE "Setting" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "key" TEXT NOT NULL,
+    "value" TEXT NOT NULL
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "Account_provider_providerAccountId_key" ON "Account"("provider", "providerAccountId");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "Session_sessionToken_key" ON "Session"("sessionToken");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "User_email_key" ON "User"("email");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "VerificationToken_token_key" ON "VerificationToken"("token");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "VerificationToken_identifier_token_key" ON "VerificationToken"("identifier", "token");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "Setting_key_key" ON "Setting"("key");
+

prisma/migrations/20260701000000_report_unique_user_date/migration.sql

@@ -0,0 +1,30 @@
+-- Deduplicate reports before adding the unique constraint:
+-- keep the earliest report per (userId, date), move tasks from the
+-- duplicates onto it, then delete the duplicates.
+
+UPDATE "Task"
+SET "reportId" = (
+    SELECT keep."id"
+    FROM "Report" keep
+    JOIN "Report" cur ON cur."id" = "Task"."reportId"
+    WHERE keep."userId" = cur."userId"
+      AND keep."date" = cur."date"
+    ORDER BY keep."createdAt" ASC, keep."id" ASC
+    LIMIT 1
+);
+
+DELETE FROM "Report"
+WHERE "id" IN (
+    SELECT "id" FROM (
+        SELECT "id",
+               ROW_NUMBER() OVER (
+                   PARTITION BY "userId", "date"
+                   ORDER BY "createdAt" ASC, "id" ASC
+               ) AS rn
+        FROM "Report"
+    )
+    WHERE rn > 1
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "Report_userId_date_key" ON "Report"("userId", "date");

prisma/migrations/migration_lock.toml

@@ -0,0 +1,3 @@
+# Please do not edit this file manually
+# It should be added in your version-control system (e.g., Git)
+provider = "sqlite"

prisma/schema.prisma

@@ -72,6 +72,8 @@ model Report {
   tasks        Task[]
   createdAt    DateTime @default(now())
   updatedAt    DateTime @updatedAt
+
+  @@unique([userId, date])
 }
 
 enum ReportStatus {