fix: P0 SEO 修复（sitemap 动态化 / canonical / OG 图 / JSON-LD）

- sitemap 加入全部 published 工具详情页、分类页、博客文章（双语），每小时 revalidate
- metadata.ts 新增 absoluteUrl 助手：canonical/hreflang 与 localePrefix 'as-needed' 对齐，英文页不再指向 301；x-default 修正为默认语言 en
- 生成缺失的 public/og-image.png、icon-192.png、icon-512.png
- 工具详情页、工具列表页、博客文章页补完整 metadata（canonical/hreflang/OG）
- JSON-LD 从 next/script afterInteractive 改为原生 script 标签，进入初始 HTML

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

src/app/[locale]/(marketing)/blog/[slug]/page.tsx

@@ -3,6 +3,7 @@ import { notFound } from "next/navigation";
 
 import { getAllBlogs, getBlogModule } from "@/lib/blog";
 import { locales, type Locale } from "@/i18n.config";
+import { generatePageMetadata } from "@/lib/metadata";
 
 interface PageProps {
   params: Promise<{
@@ -32,18 +33,15 @@ export async function generateMetadata({ params }: PageProps): Promise<Metadata>
   }
 
   const { blog } = blogModule;
-  const metadata: Metadata = {
+
+  return generatePageMetadata({
+    locale,
+    path: `/blog/${slug}`,
     title: blog.title,
     description: blog.description,
-  };
-
-  if (blog.image) {
-    metadata.openGraph = {
-      images: [blog.image],
-    };
-  }
-
-  return metadata;
+    ogImage: blog.image,
+    ogType: "article",
+  });
 }
 
 export default async function BlogPostPage({ params }: PageProps) {

src/app/[locale]/(marketing)/tools/[slug]/page.tsx

@@ -5,6 +5,7 @@ import { getLocale, getTranslations } from "next-intl/server";
 import { ExternalLink, ArrowLeft, Tag } from "lucide-react";
 import { Button } from "@/components/button";
 import { SoftwareApplicationJsonLd } from "@/components/json-ld";
+import { generatePageMetadata } from "@/lib/metadata";
 
 interface ToolDetailPageProps {
   params: Promise<{
@@ -30,10 +31,13 @@ export async function generateMetadata({ params }: ToolDetailPageProps) {
       ? tool.descriptionZh
       : tool.descriptionEn;
 
-  return {
+  return generatePageMetadata({
+    locale,
+    path: `/tools/${slug}`,
     title: `${name} - ${t("title")}`,
     description: description || `${t("subtitle")} - ${name}`,
-  };
+    ogImage: tool.coverImageUrl || tool.logoUrl || undefined,
+  });
 }
 
 export default async function ToolDetailPage({ params }: ToolDetailPageProps) {

src/app/[locale]/(marketing)/tools/page.tsx

@@ -2,13 +2,21 @@ import { getPublishedTools, getCategoriesWithCount } from "@/features/tools/acti
 import { ToolsList } from "@/features/tools/components/tools-list";
 import { CollectionPageJsonLd } from "@/components/json-ld";
 import { getLocale, getTranslations } from "next-intl/server";
+import { generatePageMetadata } from "@/lib/metadata";
 
-export async function generateMetadata() {
-  const t = await getTranslations("seo.tools");
-  return {
+export async function generateMetadata({
+  params,
+}: {
+  params: Promise<{ locale: string }>;
+}) {
+  const { locale } = await params;
+  const t = await getTranslations({ locale, namespace: "seo.tools" });
+  return generatePageMetadata({
+    locale,
+    path: "/tools",
     title: t("title"),
     description: t("description"),
-  };
+  });
 }
 
 interface ToolsPageProps {

src/app/sitemap.ts

@@ -1,12 +1,19 @@
 import { MetadataRoute } from 'next'
+import { eq } from 'drizzle-orm'
 
-export default function sitemap(): MetadataRoute.Sitemap {
-  const baseUrl = process.env.NEXT_PUBLIC_APP_URL || 'https://toolso.ai'
+// 每小时重新生成，保证新收录的工具能进入 sitemap
+export const revalidate = 3600
+import { db } from '@/lib/db'
+import { tool, category } from '@/lib/db/schema'
+import { getAllBlogs } from '@/lib/blog'
+import { locales } from '@/i18n.config'
+import { absoluteUrl } from '@/lib/metadata'
 
+export default async function sitemap(): Promise<MetadataRoute.Sitemap> {
   // Static routes with SEO priority for AI tools directory
   const staticRoutes = [
     { path: '', changeFreq: 'daily' as const, priority: 1.0 },
-    { path: '/tools', changeFreq: 'daily' as const, priority: 0.95 },  // AI tools directory - high priority
+    { path: '/tools', changeFreq: 'daily' as const, priority: 0.95 },
     { path: '/blog', changeFreq: 'weekly' as const, priority: 0.8 },
     { path: '/contact', changeFreq: 'monthly' as const, priority: 0.5 },
     { path: '/privacy', changeFreq: 'monthly' as const, priority: 0.3 },
@@ -14,26 +21,53 @@ export default function sitemap(): MetadataRoute.Sitemap {
     { path: '/cookies', changeFreq: 'monthly' as const, priority: 0.3 },
   ]
 
-  // Generate sitemap entries for both languages
-  const locales = ['zh', 'en']
-  const sitemapEntries: MetadataRoute.Sitemap = []
+  const [tools, categories, blogs] = await Promise.all([
+    db
+      .select({ slug: tool.slug, updatedAt: tool.updatedAt })
+      .from(tool)
+      .where(eq(tool.status, 'published')),
+    db.select({ slug: category.slug, updatedAt: category.updatedAt }).from(category),
+    getAllBlogs(),
+  ])
 
-  locales.forEach((locale) => {
-    staticRoutes.forEach((route) => {
-      sitemapEntries.push({
-        url: `${baseUrl}/${locale}${route.path}`,
-        lastModified: new Date(),
-        changeFrequency: route.changeFreq,
-        priority: route.priority,
-        alternates: {
-          languages: {
-            zh: `${baseUrl}/zh${route.path}`,
-            en: `${baseUrl}/en${route.path}`,
-          },
+  const dynamicRoutes = [
+    ...tools.map((t) => ({
+      path: `/tools/${t.slug}`,
+      changeFreq: 'weekly' as const,
+      priority: 0.9,
+      lastModified: t.updatedAt,
+    })),
+    ...categories.map((c) => ({
+      path: `/category/${c.slug}`,
+      changeFreq: 'daily' as const,
+      priority: 0.85,
+      lastModified: c.updatedAt,
+    })),
+    ...blogs.map((b) => ({
+      path: `/blog/${b.slug}`,
+      changeFreq: 'monthly' as const,
+      priority: 0.7,
+      lastModified: b.date ? new Date(b.date) : undefined,
+    })),
+  ]
+
+  const allRoutes = [
+    ...staticRoutes.map((r) => ({ ...r, lastModified: undefined as Date | undefined })),
+    ...dynamicRoutes,
+  ]
+
+  return locales.flatMap((locale) =>
+    allRoutes.map((route) => ({
+      url: absoluteUrl(locale, route.path),
+      lastModified: route.lastModified ?? new Date(),
+      changeFrequency: route.changeFreq,
+      priority: route.priority,
+      alternates: {
+        languages: {
+          en: absoluteUrl('en', route.path),
+          zh: absoluteUrl('zh', route.path),
         },
-      })
-    })
-  })
-
-  return sitemapEntries
+      },
+    }))
+  )
 }

src/components/json-ld.tsx

@@ -1,4 +1,3 @@
-import Script from 'next/script'
 
 interface WebSiteJsonLdProps {
   name: string
@@ -30,10 +29,8 @@ export function WebSiteJsonLd({ name, description, url, locale }: WebSiteJsonLdP
   }
 
   return (
-    <Script
-      id="website-jsonld"
+    <script
       type="application/ld+json"
-      strategy="afterInteractive"
       dangerouslySetInnerHTML={{ __html: JSON.stringify(jsonLd) }}
     />
   )
@@ -60,10 +57,8 @@ export function OrganizationJsonLd({ name, url, logo, sameAs = [] }: Organizatio
   }
 
   return (
-    <Script
-      id="organization-jsonld"
+    <script
       type="application/ld+json"
-      strategy="afterInteractive"
       dangerouslySetInnerHTML={{ __html: JSON.stringify(jsonLd) }}
     />
   )
@@ -103,10 +98,8 @@ export function SoftwareApplicationJsonLd({
   }
 
   return (
-    <Script
-      id="software-jsonld"
+    <script
       type="application/ld+json"
-      strategy="afterInteractive"
       dangerouslySetInnerHTML={{ __html: JSON.stringify(jsonLd) }}
     />
   )
@@ -143,10 +136,8 @@ export function CollectionPageJsonLd({
   }
 
   return (
-    <Script
-      id="collection-jsonld"
+    <script
       type="application/ld+json"
-      strategy="afterInteractive"
       dangerouslySetInnerHTML={{ __html: JSON.stringify(jsonLd) }}
     />
   )

src/lib/metadata.ts

@@ -1,13 +1,33 @@
 import { Metadata } from 'next'
+import { defaultLocale } from '@/i18n.config'
 
 const baseUrl = process.env.NEXT_PUBLIC_APP_URL || 'http://localhost:3000'
 
+/**
+ * 构建与 localePrefix: 'as-needed' 一致的绝对 URL：
+ * 默认语言 (en) 不带前缀，其他语言带 /{locale} 前缀。
+ * canonical / hreflang / sitemap 必须统一走这里，避免指向 301 重定向。
+ */
+export function absoluteUrl(locale: string, path: string): string {
+  const prefix = locale === defaultLocale ? '' : `/${locale}`
+  return `${baseUrl}${prefix}${path}` || baseUrl
+}
+
+export function languageAlternates(path: string) {
+  return {
+    'en-US': absoluteUrl('en', path),
+    'zh-CN': absoluteUrl('zh', path),
+    'x-default': absoluteUrl(defaultLocale, path),
+  }
+}
+
 interface GenerateMetadataProps {
   locale: string
   path: string
   title: string
   description: string
   ogImage?: string
+  ogType?: 'website' | 'article'
 }
 
 export function generatePageMetadata({
@@ -16,23 +36,17 @@ export function generatePageMetadata({
   title,
   description,
   ogImage = `${baseUrl}/og-image.png`,
+  ogType = 'website',
 }: GenerateMetadataProps): Metadata {
-  const canonicalUrl = `${baseUrl}/${locale}${path}`
-
-  // Generate alternate language URLs
-  const alternates = {
-    canonical: canonicalUrl,
-    languages: {
-      'zh-CN': `${baseUrl}/zh${path}`,
-      'en-US': `${baseUrl}/en${path}`,
-      'x-default': `${baseUrl}/zh${path}`, // Default to Chinese
-    },
-  }
+  const canonicalUrl = absoluteUrl(locale, path)
 
   return {
     title,
     description,
-    alternates,
+    alternates: {
+      canonical: canonicalUrl,
+      languages: languageAlternates(path),
+    },
     openGraph: {
       title,
       description,
@@ -47,7 +61,7 @@ export function generatePageMetadata({
         },
       ],
       locale: locale === 'zh' ? 'zh_CN' : 'en_US',
-      type: 'website',
+      type: ogType,
     },
     twitter: {
       card: 'summary_large_image',