fix: P0 工程修复（eslint 9 / .env.example / 联系表单后端）

- eslint 迁移至 v9 flat config + eslint-config-next 16，lint 脚本改为 eslint .（next lint 在 Next 16 已移除），新增 typecheck 脚本
- React Compiler 严格规则对存量代码降为警告，修复邮件模板未转义字符
- .env.example 补齐 RESEND_VERIFIED_DOMAIN / RESEND_FROM_NAME / NEXT_PUBLIC_APP_NAME / CONTACT_RECEIVER_EMAIL
- email.ts 发件地址改为发送时求值，避免冷启动缓存错误值
- 联系表单接入 server action：留言落库 contact_message，并邮件通知管理员（HTML 转义防注入）

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

.env.example

@@ -36,12 +36,20 @@ RESEND_API_KEY="re_your_api_key"
 
 # Email Configuration - Choose one of the following options:
 #
-# Set a complete from email address (recommended, highest priority)
+# Option A (recommended, highest priority): set a complete from email address
 RESEND_FROM_EMAIL="Your App <noreply@yourdomain.com>"
 
+# Option B: set a verified domain (production requires A or B),
+# from address becomes "{RESEND_FROM_NAME} <noreply@{RESEND_VERIFIED_DOMAIN}>"
+RESEND_VERIFIED_DOMAIN=""
+RESEND_FROM_NAME=""
+
 # Optional: Resend Audience ID for newsletter/marketing
 RESEND_AUDIENCE_ID="your-resend-audience-id"
 
+# Optional: where contact form notifications are sent (admin inbox)
+CONTACT_RECEIVER_EMAIL=""
+
 # ====================================
 # Analytics & Monitoring (Optional)
 # ====================================
@@ -75,6 +83,9 @@ STORAGE_PUBLIC_URL=""
 # Public app URL (update in production)
 NEXT_PUBLIC_APP_URL="http://localhost:3000"
 
+# App name used in email sender and titles (optional)
+NEXT_PUBLIC_APP_NAME="Toolso.AI"
+
 # Node environment
 NODE_ENV="development"
 

.eslintrc.json

@@ -1,3 +0,0 @@
-{
-  "extends": "next/core-web-vitals"
-}

eslint.config.mjs

@@ -0,0 +1,20 @@
+import { defineConfig, globalIgnores } from "eslint/config";
+import coreWebVitals from "eslint-config-next/core-web-vitals";
+
+export default defineConfig([
+  ...coreWebVitals,
+  globalIgnores([
+    ".next/**",
+    "node_modules/**",
+    "src/drizzle/**",
+    "src/lib/blog-manifest.generated.ts",
+  ]),
+  {
+    rules: {
+      // eslint-config-next 16 引入的 React Compiler 严格规则，
+      // 存量代码待逐步重构，先降为警告避免阻塞 CI
+      "react-hooks/set-state-in-effect": "warn",
+      "react-hooks/purity": "warn",
+    },
+  },
+]);

package.json

@@ -31,14 +31,15 @@
     "dev": "node scripts/run-dev.mjs",
     "build": "npm run generate:blog-manifest && next build",
     "start": "next start",
-    "lint": "next lint",
+    "lint": "eslint .",
     "db:generate": "drizzle-kit generate",
     "db:migrate": "drizzle-kit migrate",
     "db:push": "drizzle-kit push",
     "db:studio": "drizzle-kit studio",
     "admin:setup": "tsx scripts/setup-admin.ts",
     "seed:tools": "tsx scripts/seed-tools.ts",
-    "generate:blog-manifest": "node scripts/generate-blog-manifest.mjs"
+    "generate:blog-manifest": "node scripts/generate-blog-manifest.mjs",
+    "typecheck": "tsc --noEmit"
   },
   "dependencies": {
     "@aws-sdk/client-s3": "^3.958.0",
@@ -96,8 +97,8 @@
     "@types/react": "^19.2.7",
     "@types/react-dom": "^19.2.3",
     "dotenv": "^17.2.2",
-    "eslint": "^8",
+    "eslint": "^9.39.5",
-    "eslint-config-next": "14.2.3",
+    "eslint-config-next": "16.1.1",
     "pg": "^8.16.3",
     "playwright": "^1.57.0",
     "png-to-ico": "^3.0.1",

src/emails/reset-password-email.tsx

@@ -53,8 +53,8 @@ export const ResetPasswordEmail = ({
           </Text>
 
           <Text style={footer}>
-            If you didn't request a password reset, you can safely ignore this email.
+            If you didn&apos;t request a password reset, you can safely ignore this email.
-            Your password won't be changed.
+            Your password won&apos;t be changed.
           </Text>
         </Container>
       </Body>

src/emails/verification-email.tsx

@@ -48,7 +48,7 @@ export const VerificationEmail = ({
           </Link>
 
           <Text style={footer}>
-            If you didn't sign up for Toolso.AI, you can safely ignore this email.
+            If you didn&apos;t sign up for Toolso.AI, you can safely ignore this email.
           </Text>
         </Container>
       </Body>

src/features/marketing/actions/contact-actions.ts

@@ -0,0 +1,60 @@
+"use server";
+
+import { nanoid } from "nanoid";
+import { db } from "@/lib/db";
+import { contactMessage } from "@/lib/db/schema";
+import { sendEmail } from "@/lib/email";
+import { contactSchema, type ContactInput } from "@/features/marketing/schemas";
+
+export async function submitContactMessage(input: ContactInput) {
+  const parsed = contactSchema.safeParse(input);
+  if (!parsed.success) {
+    return { success: false as const, error: "INVALID_INPUT" };
+  }
+
+  const { name, email, company, message } = parsed.data;
+
+  try {
+    await db.insert(contactMessage).values({
+      id: nanoid(),
+      name,
+      email,
+      company,
+      message,
+    });
+  } catch (error) {
+    console.error("Failed to save contact message:", error);
+    return { success: false as const, error: "SAVE_FAILED" };
+  }
+
+  // 邮件通知站点管理员；发信失败不影响留言已落库的结果
+  const receiver = process.env.CONTACT_RECEIVER_EMAIL;
+  if (receiver) {
+    await sendEmail({
+      to: receiver,
+      subject: `New contact message from ${name} - Toolso.AI`,
+      replyTo: email,
+      html: `
+        <div style="font-family: sans-serif; max-width: 600px; margin: 0 auto;">
+          <h2 style="color: #333;">New Contact Message</h2>
+          <p><strong>Name:</strong> ${escapeHtml(name)}</p>
+          <p><strong>Email:</strong> ${escapeHtml(email)}</p>
+          <p><strong>Company:</strong> ${escapeHtml(company)}</p>
+          <p><strong>Message:</strong></p>
+          <p style="white-space: pre-wrap; background: #f5f5f5; padding: 12px; border-radius: 6px;">${escapeHtml(message)}</p>
+        </div>
+      `,
+    });
+  }
+
+  return { success: true as const };
+}
+
+function escapeHtml(value: string): string {
+  return value
+    .replace(/&/g, "&amp;")
+    .replace(/</g, "&lt;")
+    .replace(/>/g, "&gt;")
+    .replace(/"/g, "&quot;")
+    .replace(/'/g, "&#39;");
+}

src/features/marketing/components/contact-form.tsx

@@ -10,7 +10,10 @@ import {
   FormTextareaField,
   FormTextField,
 } from "@/features/forms/components/form-text-field";
+import { toast } from "sonner";
+
 import { ContactInput, contactSchema } from "@/features/marketing/schemas";
+import { submitContactMessage } from "@/features/marketing/actions/contact-actions";
 import {
   IconBrandGithub,
   IconBrandLinkedin,
@@ -54,8 +57,13 @@ export function ContactForm() {
   });
 
   async function onSubmit(values: ContactInput) {
-    // TODO: wire up to backend when available
+    const result = await submitContactMessage(values);
-    console.log("submitted form", values);
+    if (result.success) {
+      toast.success(t("form.submitSuccess"));
+      form.reset();
+    } else {
+      toast.error(t("form.submitError"));
+    }
   }
 
   return (

src/lib/email.ts

@@ -29,8 +29,6 @@ const getDefaultFromEmail = () => {
   return `${fromName} <noreply@${process.env.RESEND_VERIFIED_DOMAIN}>`;
 };
 
-const DEFAULT_FROM_EMAIL = getDefaultFromEmail();
-
 export interface SendEmailOptions {
   to: string | string[];
   subject: string;
@@ -47,7 +45,8 @@ export async function sendEmail({
   react,
   html,
   text,
-  from = DEFAULT_FROM_EMAIL,
+  // 每次发送时求值，避免 serverless 冷启动时 env 未就绪被永久缓存
+  from = getDefaultFromEmail(),
   replyTo,
 }: SendEmailOptions) {
   try {