feat: 新增标签分类体系与固定类型筛选优化

src/app/[locale]/projects/ProjectsPageClient.tsx

@@ -1,6 +1,6 @@
 'use client'
 
-import { useState, useEffect } from 'react'
+import { useState, useEffect, useCallback } from 'react'
 import { useSearchParams } from 'next/navigation'
 import { AISearchBar } from '@/components/search/AISearchBar'
 import { AISearchResults } from '@/components/search/AISearchResults'
@@ -14,6 +14,8 @@ interface AISearchResult {
 
 interface ProjectsPageClientProps {
   locale: string
+  selectedTags: string[]
+  projectType?: string
   children: React.ReactNode
   searchPlaceholder: string
   searchLabel: string
@@ -32,6 +34,8 @@ interface ProjectsPageClientProps {
 
 export function ProjectsPageClient({
   locale,
+  selectedTags,
+  projectType,
   children,
   searchPlaceholder,
   searchLabel,
@@ -49,18 +53,7 @@ export function ProjectsPageClient({
   const [error, setError] = useState<string | null>(null)
   const [initialAIHandled, setInitialAIHandled] = useState(false)
 
-  // 检查 URL 参数，如果有 ai=1 且有搜索词，则自动触发 AI 搜索
-  useEffect(() => {
-    const aiParam = searchParams.get('ai')
-    const searchParam = searchParams.get('search')
-
-    if (aiParam === '1' && searchParam && !initialAIHandled) {
-      setInitialAIHandled(true)
-      performAISearch(searchParam)
-    }
-  }, [searchParams, initialAIHandled])
-
-  const performAISearch = async (query: string) => {
+  const performAISearch = useCallback(async (query: string) => {
     setLoading(true)
     setError(null)
     setIsAIResult(true)
@@ -72,6 +65,7 @@ export function ProjectsPageClient({
         body: JSON.stringify({
           search: query,
           locale: locale,
+          tags: selectedTags,
           limit: 20
         })
       })
@@ -85,7 +79,6 @@ export function ProjectsPageClient({
       // 转换 API 返回格式为组件期望格式
       // API 返回: { projects: [{ ...project, similarity }], pagination }
       // 组件期望: [{ project, similarity }]
-      const { similarity, ...projectData } = data.projects || []
       const results = (data.projects || []).map((p: any) => ({
         project: {
           id: p.id,
@@ -112,13 +105,26 @@ export function ProjectsPageClient({
     } finally {
       setLoading(false)
     }
-  }
+  }, [locale, selectedTags])
+
+  // 检查 URL 参数，如果有 ai=1 且有搜索词，则自动触发 AI 搜索
+  useEffect(() => {
+    const aiParam = searchParams.get('ai')
+    const searchParam = searchParams.get('search')
+
+    if (aiParam === '1' && searchParam && !initialAIHandled) {
+      setInitialAIHandled(true)
+      performAISearch(searchParam)
+    }
+  }, [searchParams, initialAIHandled, performAISearch])
 
   const handleAISearch = async (query: string, isAI: boolean) => {
     if (!isAI) {
       // 传统搜索：刷新页面到 URL 参数
       const params = new URLSearchParams()
       if (query) params.set('search', query)
+      if (projectType) params.set('projectType', projectType)
+      if (selectedTags.length > 0) params.set('tags', selectedTags.join(','))
       window.location.href = `/${locale}/projects?${params.toString()}`
       return
     }

src/app/[locale]/projects/page.tsx

@@ -1,13 +1,46 @@
 import { Suspense } from 'react'
 import { getTranslations } from 'next-intl/server'
-import { getProjects, getAllTags, getTopTags } from '@/hooks/useProjects'
+import {
+  getFixedProjectTypeFilters,
+  getProjects,
+  getTagCategoryGroups,
+} from '@/hooks/useProjects'
 import { ProjectList } from '@/components/project/ProjectList'
-import { TagCloud } from '@/components/project/TagCloud'
+import { TagFilterPanel } from '@/components/project/TagFilterPanel'
 import { ProjectsPageClient } from './ProjectsPageClient'
+import { isFixedProjectTypeSlug } from '@/lib/tag-taxonomy'
 
 interface ProjectsPageProps {
   params: Promise<{ locale: string }>
-  searchParams: Promise<{ search?: string; tag?: string; page?: string }>
+  searchParams: Promise<{
+    search?: string
+    tag?: string
+    tags?: string
+    projectType?: string
+    page?: string
+  }>
+}
+
+function buildProjectsQueryString(options: {
+  search: string
+  projectType: string
+  selectedTags: string[]
+  page: number
+}): string {
+  const query = new URLSearchParams()
+
+  if (options.search) {
+    query.set('search', options.search)
+  }
+  if (options.projectType) {
+    query.set('projectType', options.projectType)
+  }
+  if (options.selectedTags.length > 0) {
+    query.set('tags', options.selectedTags.join(','))
+  }
+  query.set('page', String(options.page))
+
+  return query.toString()
 }
 
 export default async function ProjectsPage({
@@ -21,14 +54,30 @@ export default async function ProjectsPage({
   const [resolvedParams, resolvedSearchParams] = await Promise.all([params, searchParams])
   const { locale } = resolvedParams
   const search = resolvedSearchParams.search || ''
-  const tag = resolvedSearchParams.tag || ''
+  const selectedTags = Array.from(
+    new Set(
+      [resolvedSearchParams.tag || '', ...(resolvedSearchParams.tags || '').split(',')]
+        .map((item) => item.trim())
+        .filter((item) => item.length > 0)
+    )
+  )
+  const projectTypeParam = resolvedSearchParams.projectType || ''
+  const activeProjectType = isFixedProjectTypeSlug(projectTypeParam)
+    ? projectTypeParam
+    : ''
   const page = Number(resolvedSearchParams.page) || 1
 
-  const [projectsData, topTags, allTags] = await Promise.all([
-    getProjects({ search, tag, page }),
-    getTopTags(10), // 获取前10个标签
-    getAllTags(),   // 获取所有标签（用于展开）
+  const [projectsData, projectTypeOptions, tagCategoryGroups] = await Promise.all([
+    getProjects({
+      search,
+      tags: selectedTags,
+      projectType: activeProjectType,
+      page,
+    }),
+    getFixedProjectTypeFilters(),
+    getTagCategoryGroups(),
   ])
+  const activeProjectTypeMeta = projectTypeOptions.find((type) => type.slug === activeProjectType)
 
   // 准备翻译文本传递给客户端组件
   const translations = {
@@ -45,6 +94,8 @@ export default async function ProjectsPage({
         <Suspense fallback={<div className="h-20"></div>}>
           <ProjectsPageClient
             locale={locale}
+            selectedTags={selectedTags}
+            projectType={activeProjectType}
             searchPlaceholder={t('searchPlaceholder')}
             searchLabel={tCommon('search')}
             aiPlaceholder={t('aiSearchPlaceholder')}
@@ -54,16 +105,28 @@ export default async function ProjectsPage({
             searching={tCommon('searching')}
             translations={translations}
           >
-            {/* Tag Cloud - rendered inside client component for non-AI mode */}
+            {/* Filters - rendered inside client component for non-AI mode */}
             <div className="border-t-2 border-gray-100 dark:border-gray-800 pt-6 mt-8">
               <h3 className="font-display font-bold uppercase text-sm mb-4 border-b-2 border-black inline-block dark:border-primary pb-1">
-                Browse by Tags
+                {tProject('browseByFilters')}
               </h3>
-              <TagCloud
-                tags={topTags}      // 默认显示前10个
-                allTags={allTags}   // 用于展开和搜索
+              <TagFilterPanel
                 locale={locale}
-                activeTag={tag}
+                search={search}
+                activeProjectType={activeProjectType}
+                selectedTags={selectedTags}
+                projectTypeOptions={projectTypeOptions}
+                tagCategoryGroups={tagCategoryGroups}
+                translations={{
+                  fixedProjectType: tProject('fixedProjectType'),
+                  allTypes: tProject('allTypes'),
+                  filterByTagCategory: tProject('filterByTagCategory'),
+                  searchTagsPlaceholder: tProject('searchTagsPlaceholder'),
+                  clearTagFilters: tProject('clearTagFilters'),
+                  showMoreTags: tProject('showMoreTags'),
+                  showLessTags: tProject('showLessTags'),
+                  noMatchingTags: tProject('noMatchingTags'),
+                }}
               />
             </div>
           </ProjectsPageClient>
@@ -73,7 +136,11 @@ export default async function ProjectsPage({
       {/* Projects Section */}
       <div className="flex justify-between items-end mb-8 border-b border-black dark:border-white/20 pb-4">
         <h2 className="font-display font-bold text-3xl uppercase tracking-tight">
-          {tag ? `Tag: ${tag}` : 'All Projects'}
+          {activeProjectType
+            ? locale === 'en'
+              ? activeProjectTypeMeta?.nameEn || activeProjectType
+              : activeProjectTypeMeta?.name || activeProjectType
+            : tProject('allProjects')}
         </h2>
         <span className="font-display text-xs font-bold uppercase text-gray-500">
           {projectsData.pagination.total} projects
@@ -88,7 +155,12 @@ export default async function ProjectsPage({
           <div className="flex border-2 border-black dark:border-white/20 bg-white dark:bg-surface-dark shadow-neo dark:shadow-none">
             {page > 1 && (
               <a
-                href={`?search=${search}&tag=${tag}&page=${page - 1}`}
+                href={`?${buildProjectsQueryString({
+                  search,
+                  projectType: activeProjectType,
+                  selectedTags,
+                  page: page - 1,
+                })}`}
                 className="px-4 py-2 border-r border-black dark:border-white/20 hover:bg-gray-100 dark:hover:bg-white/10 transition-colors"
               >
                 ←
@@ -100,7 +172,12 @@ export default async function ProjectsPage({
               return (
                 <a
                   key={pageNum}
-                  href={`?search=${search}&tag=${tag}&page=${pageNum}`}
+                  href={`?${buildProjectsQueryString({
+                    search,
+                    projectType: activeProjectType,
+                    selectedTags,
+                    page: pageNum,
+                  })}`}
                   className={`px-4 py-2 font-display font-bold text-sm border-r border-black dark:border-white/20 ${
                     pageNum === page
                       ? 'bg-primary text-black'
@@ -113,7 +190,12 @@ export default async function ProjectsPage({
             })}
             {page < projectsData.pagination.totalPages && (
               <a
-                href={`?search=${search}&tag=${tag}&page=${page + 1}`}
+                href={`?${buildProjectsQueryString({
+                  search,
+                  projectType: activeProjectType,
+                  selectedTags,
+                  page: page + 1,
+                })}`}
                 className="px-4 py-2 hover:bg-gray-100 dark:hover:bg-white/10 transition-colors"
               >
                 →

src/app/api/discovery/lib/discovery-service.ts

@@ -2,6 +2,12 @@ import { prisma } from '@/lib/prisma'
 import type { ProjectInput } from '@/lib/validations'
 import { generateSlug } from '@/lib/slug'
 import type { Prisma } from '@prisma/client'
+import {
+  FIXED_PROJECT_TYPE_TAGS,
+  inferProjectTypeSlug,
+  inferTagCategory,
+  type FixedProjectTypeSlug,
+} from '@/lib/tag-taxonomy'
 
 const PLURAL_NORMALIZATION_MAP = new Map([
   ['agents', 'agent'],
@@ -141,16 +147,23 @@ function chooseBestTag(candidates: TagWithProjectCount[]): TagWithProjectCount {
 
 async function getFallbackTag(): Promise<TagWithProjectCount> {
   const fallbackSlug = generateSlug(TAG_FALLBACK.name, TAG_FALLBACK.nameEn)
+  const fallbackCategory = inferTagCategory({
+    slug: fallbackSlug,
+    name: TAG_FALLBACK.name,
+    nameEn: TAG_FALLBACK.nameEn,
+  })
   const fallbackTag = await prisma.tag.upsert({
     where: { slug: fallbackSlug },
     update: {
       name: TAG_FALLBACK.name,
       nameEn: TAG_FALLBACK.nameEn,
+      category: fallbackCategory,
     },
     create: {
       name: TAG_FALLBACK.name,
       nameEn: TAG_FALLBACK.nameEn,
       slug: fallbackSlug,
+      category: fallbackCategory,
     },
     include: {
       _count: {
@@ -162,6 +175,57 @@ async function getFallbackTag(): Promise<TagWithProjectCount> {
   return fallbackTag
 }
 
+const FIXED_PROJECT_TYPE_MAP = new Map(
+  FIXED_PROJECT_TYPE_TAGS.map((tag) => [tag.slug, tag] as const)
+)
+
+export async function ensureFixedProjectTypeTag(
+  slug: FixedProjectTypeSlug
+): Promise<TagWithProjectCount> {
+  const fixedTag = FIXED_PROJECT_TYPE_MAP.get(slug)
+  if (!fixedTag) {
+    throw new Error(`Unsupported fixed project type slug: ${slug}`)
+  }
+
+  return prisma.tag.upsert({
+    where: { slug: fixedTag.slug },
+    update: {
+      name: fixedTag.name,
+      nameEn: fixedTag.nameEn,
+      category: 'FIXED_PROJECT_TYPE',
+    },
+    create: {
+      name: fixedTag.name,
+      nameEn: fixedTag.nameEn,
+      slug: fixedTag.slug,
+      category: 'FIXED_PROJECT_TYPE',
+    },
+    include: {
+      _count: {
+        select: { projects: true },
+      },
+    },
+  })
+}
+
+export async function resolveFixedProjectTypeTag(
+  projectData: Pick<ProjectInput, 'name' | 'nameEn' | 'description' | 'descriptionEn' | 'tags'>
+): Promise<TagWithProjectCount> {
+  const projectTypeSlug = inferProjectTypeSlug({
+    name: projectData.name,
+    nameEn: projectData.nameEn,
+    description: projectData.description,
+    descriptionEn: projectData.descriptionEn,
+    tags: projectData.tags.map((tag) => ({
+      name: tag.name,
+      nameEn: tag.nameEn,
+      slug: generateSlug(tag.name, tag.nameEn || null),
+    })),
+  })
+
+  return ensureFixedProjectTypeTag(projectTypeSlug)
+}
+
 /**
  * 多级去重策略：查找已存在的项目
  *
@@ -334,27 +398,48 @@ export async function upsertTags(tags: ProjectInput['tags']) {
     }
 
     if (matchedTag) {
-      if (incomingTag.nameEn && !matchedTag.nameEn) {
-        await prisma.tag.update({
+      const inferredCategory = inferTagCategory({
+        slug: incomingTag.slug,
+        name: incomingTag.name,
+        nameEn: incomingTag.nameEn,
+      })
+      const shouldUpdateNameEn = incomingTag.nameEn && !matchedTag.nameEn
+      const shouldUpdateCategory =
+        matchedTag.category === 'FREE_TAG' && inferredCategory !== 'FREE_TAG'
+
+      if (shouldUpdateNameEn || shouldUpdateCategory) {
+        const updatedTag = await prisma.tag.update({
           where: { id: matchedTag.id },
-          data: { nameEn: incomingTag.nameEn },
+          data: {
+            ...(shouldUpdateNameEn ? { nameEn: incomingTag.nameEn } : {}),
+            ...(shouldUpdateCategory ? { category: inferredCategory } : {}),
+          },
+          include: {
+            _count: {
+              select: { projects: true },
+            },
+          },
         })
-        matchedTag = {
-          ...matchedTag,
-          nameEn: incomingTag.nameEn,
-        }
+        matchedTag = updatedTag
       }
 
       resolvedTags.push(matchedTag)
       continue
     }
 
+    const inferredCategory = inferTagCategory({
+      slug: incomingTag.slug,
+      name: incomingTag.name,
+      nameEn: incomingTag.nameEn,
+    })
+
     try {
       const createdTag = await prisma.tag.create({
         data: {
           name: incomingTag.name,
           nameEn: incomingTag.nameEn,
           slug: incomingTag.slug,
+          category: inferredCategory,
         },
         include: {
           _count: {

src/app/api/discovery/tasks/[id]/complete/route.ts

@@ -6,7 +6,11 @@ import {
   ProjectInputSchema,
   type ProjectInput,
 } from '@/lib/validations'
-import { findExistingProject, upsertTags } from '../../../lib/discovery-service'
+import {
+  findExistingProject,
+  resolveFixedProjectTypeTag,
+  upsertTags,
+} from '../../../lib/discovery-service'
 
 /**
  * POST /api/discovery/tasks/:id/complete
@@ -58,8 +62,16 @@ export async function POST(
     // 查找已存在的项目（复用webhook的多级去重逻辑）
     const existingProject = await findExistingProject(projectData)
 
-    // Upsert tags（复用服务层函数）
-    const tagConnections = await upsertTags(projectData.tags)
+    // Upsert tags（复用服务层函数）+ 固定项目分类标签
+    const [dynamicTagConnections, fixedProjectTypeTag] = await Promise.all([
+      upsertTags(projectData.tags),
+      resolveFixedProjectTypeTag(projectData),
+    ])
+    const tagConnections = Array.from(
+      new Map(
+        [...dynamicTagConnections, fixedProjectTypeTag].map((tag) => [tag.id, tag])
+      ).values()
+    )
 
     // 生成slug
     const slug = generateSlug(projectData.name, projectData.nameEn)

src/app/api/webhook/projects/route.ts

@@ -8,7 +8,11 @@ import {
   type WebhookPayload,
   type ProjectInput,
 } from '@/lib/validations'
-import { findExistingProject, upsertTags } from '../../discovery/lib/discovery-service'
+import {
+  findExistingProject,
+  resolveFixedProjectTypeTag,
+  upsertTags,
+} from '../../discovery/lib/discovery-service'
 import { generateSlug } from '@/lib/slug'
 
 export async function POST(request: NextRequest) {
@@ -91,7 +95,15 @@ export async function POST(request: NextRequest) {
         const existingProject = await findExistingProject(validProject)
 
         // 标签规范化与自动复用（防止同义标签持续膨胀）
-        const tagConnections = await upsertTags(validProject.tags)
+        const [dynamicTagConnections, fixedProjectTypeTag] = await Promise.all([
+          upsertTags(validProject.tags),
+          resolveFixedProjectTypeTag(validProject),
+        ])
+        const tagConnections = Array.from(
+          new Map(
+            [...dynamicTagConnections, fixedProjectTypeTag].map((tag) => [tag.id, tag])
+          ).values()
+        )
 
         // Generate slug for project
         const slug = generateSlug(validProject.name, validProject.nameEn)

src/components/project/ProjectDetail.tsx

@@ -4,6 +4,7 @@ import { MarkdownContent } from './MarkdownContent'
 import { ShareButtons } from './ShareButtons'
 import { GitHubBadges } from './GitHubBadges'
 import { getGitHubBadgesFromLinks } from '@/lib/github/badges'
+import { isFixedProjectTypeSlug } from '@/lib/tag-taxonomy'
 
 interface ProjectDetailProps {
   project: {
@@ -59,9 +60,10 @@ export async function ProjectDetail({ project, locale }: ProjectDetailProps) {
   // Generate GitHub badge URLs
   const badges = getGitHubBadgesFromLinks(project.links as any)
 
-  // Get category from first tag
-  const category = project.tags[0]?.name || 'AI Agent'
-  const categoryEn = project.tags[0]?.nameEn || project.tags[0]?.name || 'AI Agent'
+  const fixedTypeTag = project.tags.find((tag) => isFixedProjectTypeSlug(tag.slug))
+  const category = fixedTypeTag?.name || project.tags[0]?.name || 'AI Agent'
+  const categoryEn =
+    fixedTypeTag?.nameEn || fixedTypeTag?.name || project.tags[0]?.nameEn || project.tags[0]?.name || 'AI Agent'
   const displayCategory = locale === 'en' ? categoryEn : category
 
   return (

src/components/project/TagFilterPanel.tsx

@@ -0,0 +1,397 @@
+'use client'
+
+import { useMemo, useState } from 'react'
+import Link from 'next/link'
+import type { FilterTagCategoryGroup, FixedProjectTypeFilter } from '@/hooks/useProjects'
+
+interface TagFilterPanelProps {
+  locale: string
+  search: string
+  activeProjectType?: string
+  selectedTags: string[]
+  projectTypeOptions: FixedProjectTypeFilter[]
+  tagCategoryGroups: FilterTagCategoryGroup[]
+  translations: {
+    fixedProjectType: string
+    allTypes: string
+    filterByTagCategory: string
+    searchTagsPlaceholder: string
+    clearTagFilters: string
+    showMoreTags: string
+    showLessTags: string
+    noMatchingTags: string
+  }
+}
+
+function buildProjectsUrl(params: {
+  locale: string
+  search: string
+  projectType?: string
+  selectedTags: string[]
+}): string {
+  const query = new URLSearchParams()
+
+  if (params.search) {
+    query.set('search', params.search)
+  }
+
+  if (params.projectType) {
+    query.set('projectType', params.projectType)
+  }
+
+  if (params.selectedTags.length > 0) {
+    query.set('tags', params.selectedTags.join(','))
+  }
+
+  const queryString = query.toString()
+  return queryString
+    ? `/${params.locale}/projects?${queryString}`
+    : `/${params.locale}/projects`
+}
+
+export function TagFilterPanel({
+  locale,
+  search,
+  activeProjectType,
+  selectedTags,
+  projectTypeOptions,
+  tagCategoryGroups,
+  translations,
+}: TagFilterPanelProps) {
+  const DEFAULT_VISIBLE_TAGS = 12
+  const [tagQuery, setTagQuery] = useState('')
+  const [isTagPanelExpanded, setIsTagPanelExpanded] = useState(false)
+  const [expandedGroups, setExpandedGroups] = useState<Record<string, boolean>>({})
+  const [showAllTagsByGroup, setShowAllTagsByGroup] = useState<Record<string, boolean>>({})
+
+  const selectedTagSet = useMemo(() => new Set(selectedTags), [selectedTags])
+  const tagBySlug = useMemo(
+    () =>
+      new Map(
+        tagCategoryGroups.flatMap((group) =>
+          group.tags.map((tag) => [tag.slug, tag] as const)
+        )
+      ),
+    [tagCategoryGroups]
+  )
+  const normalizedQuery = tagQuery.trim().toLowerCase()
+  const totalTagCount = useMemo(
+    () => tagCategoryGroups.reduce((total, group) => total + group.tags.length, 0),
+    [tagCategoryGroups]
+  )
+
+  const filteredGroups = useMemo(() => {
+    if (!normalizedQuery) {
+      return tagCategoryGroups
+    }
+
+    return tagCategoryGroups
+      .map((group) => ({
+        ...group,
+        tags: group.tags.filter((tag) => {
+          const name = tag.name.toLowerCase()
+          const nameEn = (tag.nameEn || '').toLowerCase()
+          return name.includes(normalizedQuery) || nameEn.includes(normalizedQuery)
+        }),
+      }))
+      .filter((group) => group.tags.length > 0)
+  }, [tagCategoryGroups, normalizedQuery])
+  const filteredTagCount = useMemo(
+    () => filteredGroups.reduce((total, group) => total + group.tags.length, 0),
+    [filteredGroups]
+  )
+
+  const allTypesHref = buildProjectsUrl({
+    locale,
+    search,
+    selectedTags,
+  })
+
+  const allTagsClearedHref = buildProjectsUrl({
+    locale,
+    search,
+    projectType: activeProjectType,
+    selectedTags: [],
+  })
+
+  const toggleTag = (slug: string) => {
+    if (selectedTagSet.has(slug)) {
+      return selectedTags.filter((item) => item !== slug)
+    }
+
+    return [...selectedTags, slug]
+  }
+
+  const hasSelectedTags = selectedTags.length > 0
+  const isSearching = normalizedQuery.length > 0
+  const shouldShowTagPanelBody = isTagPanelExpanded || hasSelectedTags || isSearching
+
+  const toggleGroupExpanded = (category: string) => {
+    setExpandedGroups((prev) => ({
+      ...prev,
+      [category]: !prev[category],
+    }))
+  }
+
+  const toggleGroupShowAll = (category: string) => {
+    setShowAllTagsByGroup((prev) => ({
+      ...prev,
+      [category]: !prev[category],
+    }))
+  }
+
+  return (
+    <div className="space-y-6">
+      <section>
+        <div className="flex flex-wrap gap-2">
+          <Link
+            href={allTypesHref}
+            className={`px-3 py-1 border-2 font-display text-xs font-bold uppercase transition-all shadow-neo-sm hover:shadow-none hover:translate-x-[2px] hover:translate-y-[2px] ${
+              !activeProjectType
+                ? 'bg-black text-white border-black'
+                : 'bg-white dark:bg-surface-dark border-black dark:border-gray-500 hover:bg-black hover:text-white dark:hover:bg-primary dark:hover:text-black'
+            }`}
+          >
+            {translations.allTypes}
+          </Link>
+          {projectTypeOptions.map((typeOption) => {
+            const isActive = activeProjectType === typeOption.slug
+            const href = buildProjectsUrl({
+              locale,
+              search,
+              projectType: isActive ? undefined : typeOption.slug,
+              selectedTags,
+            })
+            const displayName =
+              locale === 'en' && typeOption.nameEn ? typeOption.nameEn : typeOption.name
+
+            return (
+              <Link
+                key={typeOption.slug}
+                href={href}
+                className={`px-3 py-1 border-2 font-display text-xs font-bold uppercase transition-all shadow-neo-sm hover:shadow-none hover:translate-x-[2px] hover:translate-y-[2px] flex items-center gap-2 ${
+                  isActive
+                    ? 'bg-black text-white border-black'
+                    : 'bg-white dark:bg-surface-dark border-black dark:border-gray-500 hover:bg-black hover:text-white dark:hover:bg-primary dark:hover:text-black'
+                }`}
+              >
+                {displayName}
+                <span
+                  className={`text-[10px] px-1.5 py-0.5 ${
+                    isActive
+                      ? 'bg-gray-700 text-white'
+                      : 'bg-gray-200 dark:bg-gray-800 text-gray-600 dark:text-gray-300'
+                  }`}
+                >
+                  {typeOption.projectCount}
+                </span>
+              </Link>
+            )
+          })}
+        </div>
+      </section>
+
+      <section>
+        <button
+          type="button"
+          onClick={() => setIsTagPanelExpanded((value) => !value)}
+          className="w-full flex items-center justify-between gap-3 border-2 border-black dark:border-gray-500 px-4 py-2 bg-white dark:bg-surface-dark text-left shadow-neo-sm hover:shadow-none hover:translate-x-[2px] hover:translate-y-[2px] transition-all"
+          aria-expanded={shouldShowTagPanelBody}
+        >
+          <span className="font-display font-bold uppercase text-xs text-gray-700 dark:text-gray-200">
+            {translations.filterByTagCategory}
+          </span>
+          <div className="flex items-center gap-2">
+            <span className="text-[10px] font-display font-bold uppercase text-gray-500">
+              {isSearching ? filteredTagCount : totalTagCount}
+            </span>
+            <svg
+              className={`w-4 h-4 text-gray-600 dark:text-gray-300 transition-transform ${
+                shouldShowTagPanelBody ? 'rotate-180' : ''
+              }`}
+              fill="none"
+              stroke="currentColor"
+              viewBox="0 0 24 24"
+              aria-hidden="true"
+            >
+              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M19 9l-7 7-7-7" />
+            </svg>
+          </div>
+        </button>
+
+        {shouldShowTagPanelBody && (
+          <div className="mt-4">
+            <div className="relative mb-4">
+              <input
+                type="text"
+                value={tagQuery}
+                onChange={(event) => setTagQuery(event.target.value)}
+                placeholder={translations.searchTagsPlaceholder}
+                className="w-full px-4 py-2 pl-10 bg-white dark:bg-surface-dark border-2 border-gray-300 dark:border-gray-600 focus:border-primary text-sm font-display focus:outline-none transition-colors"
+              />
+              <svg
+                className="absolute left-3 top-1/2 -translate-y-1/2 w-4 h-4 text-gray-400"
+                fill="none"
+                stroke="currentColor"
+                viewBox="0 0 24 24"
+                aria-hidden="true"
+              >
+                <path
+                  strokeLinecap="round"
+                  strokeLinejoin="round"
+                  strokeWidth={2}
+                  d="M21 21l-6-6m2-5a7 7 0 11-14 0 7 7 0 0114 0z"
+                />
+              </svg>
+            </div>
+
+            {selectedTags.length > 0 && (
+              <div className="mb-4 flex items-center justify-between gap-3">
+                <div className="flex flex-wrap gap-2">
+                  {selectedTags.map((tagSlug) => {
+                    const matchedTag = tagBySlug.get(tagSlug)
+                    const displayName =
+                      matchedTag && locale === 'en' && matchedTag.nameEn
+                        ? matchedTag.nameEn
+                        : matchedTag?.name || tagSlug
+                    const href = buildProjectsUrl({
+                      locale,
+                      search,
+                      projectType: activeProjectType,
+                      selectedTags: selectedTags.filter((item) => item !== tagSlug),
+                    })
+
+                    return (
+                      <Link
+                        key={tagSlug}
+                        href={href}
+                        className="px-2 py-1 bg-black text-white border border-black text-[10px] font-display uppercase"
+                      >
+                        {displayName} ×
+                      </Link>
+                    )
+                  })}
+                </div>
+                <Link
+                  href={allTagsClearedHref}
+                  className="text-[10px] font-display font-bold uppercase text-gray-500 hover:text-black dark:hover:text-white"
+                >
+                  {translations.clearTagFilters}
+                </Link>
+              </div>
+            )}
+
+            <div className="space-y-3">
+              {filteredGroups.map((group) => {
+                const groupName = locale === 'en' && group.nameEn ? group.nameEn : group.name
+                const groupHasSelectedTag = group.tags.some((tag) => selectedTagSet.has(tag.slug))
+                const isGroupExpanded =
+                  isSearching || groupHasSelectedTag || expandedGroups[group.category] === true
+                const isGroupShowAll = isSearching || showAllTagsByGroup[group.category] === true
+                const visibleTags = isGroupShowAll
+                  ? group.tags
+                  : group.tags.slice(0, DEFAULT_VISIBLE_TAGS)
+
+                return (
+                  <div key={group.category} className="border-2 border-gray-200 dark:border-gray-700">
+                    <button
+                      type="button"
+                      onClick={() => toggleGroupExpanded(group.category)}
+                      className="w-full flex items-center justify-between gap-3 px-3 py-2 bg-gray-50 dark:bg-gray-900/40 border-b-2 border-gray-200 dark:border-gray-700"
+                      aria-expanded={isGroupExpanded}
+                    >
+                      <span className="font-display font-bold uppercase text-[11px] text-gray-600 dark:text-gray-300">
+                        {groupName}
+                      </span>
+                      <div className="flex items-center gap-2">
+                        <span className="text-[10px] font-display font-bold uppercase text-gray-500">
+                          {group.tags.length}
+                        </span>
+                        <svg
+                          className={`w-3.5 h-3.5 text-gray-500 transition-transform ${
+                            isGroupExpanded ? 'rotate-180' : ''
+                          }`}
+                          fill="none"
+                          stroke="currentColor"
+                          viewBox="0 0 24 24"
+                          aria-hidden="true"
+                        >
+                          <path
+                            strokeLinecap="round"
+                            strokeLinejoin="round"
+                            strokeWidth={2}
+                            d="M19 9l-7 7-7-7"
+                          />
+                        </svg>
+                      </div>
+                    </button>
+
+                    {isGroupExpanded && (
+                      <div className="p-3">
+                        <div className="flex flex-wrap gap-2">
+                          {visibleTags.map((tag) => {
+                            const isActive = selectedTagSet.has(tag.slug)
+                            const href = buildProjectsUrl({
+                              locale,
+                              search,
+                              projectType: activeProjectType,
+                              selectedTags: toggleTag(tag.slug),
+                            })
+                            const displayName = locale === 'en' && tag.nameEn ? tag.nameEn : tag.name
+
+                            return (
+                              <Link
+                                key={tag.id}
+                                href={href}
+                                className={`px-3 py-1 border-2 font-display text-xs font-bold uppercase transition-all shadow-neo-sm hover:shadow-none hover:translate-x-[2px] hover:translate-y-[2px] flex items-center gap-2 ${
+                                  isActive
+                                    ? 'bg-black text-white border-black'
+                                    : 'bg-white dark:bg-surface-dark border-black dark:border-gray-500 hover:bg-black hover:text-white dark:hover:bg-primary dark:hover:text-black'
+                                }`}
+                              >
+                                {displayName}
+                                <span
+                                  className={`text-[10px] px-1.5 py-0.5 ${
+                                    isActive
+                                      ? 'bg-gray-700 text-white'
+                                      : 'bg-gray-200 dark:bg-gray-800 text-gray-600 dark:text-gray-300'
+                                  }`}
+                                >
+                                  {tag._count.projects}
+                                </span>
+                              </Link>
+                            )
+                          })}
+                        </div>
+
+                        {!isSearching && group.tags.length > DEFAULT_VISIBLE_TAGS && (
+                          <button
+                            type="button"
+                            onClick={() => toggleGroupShowAll(group.category)}
+                            className="mt-3 text-[10px] font-display font-bold uppercase text-gray-500 hover:text-black dark:hover:text-white"
+                          >
+                            {isGroupShowAll
+                              ? translations.showLessTags
+                              : `${translations.showMoreTags} (+${
+                                  group.tags.length - DEFAULT_VISIBLE_TAGS
+                                })`}
+                          </button>
+                        )}
+                      </div>
+                    )}
+                  </div>
+                )
+              })}
+
+              {filteredGroups.length === 0 && (
+                <div className="text-center py-4 text-gray-500 text-sm">
+                  {translations.noMatchingTags}
+                </div>
+              )}
+            </div>
+          </div>
+        )}
+      </section>
+    </div>
+  )
+}

src/hooks/useProjects.ts

@@ -1,5 +1,60 @@
 import { prisma } from '@/lib/prisma'
-import type { Prisma } from '@prisma/client'
+import { Prisma, type TagCategory } from '@prisma/client'
+import {
+  FIXED_PROJECT_TYPE_TAGS,
+  TAG_CATEGORY_META,
+  getTagCategoryOrder,
+  isFixedProjectTypeSlug,
+  type FixedProjectTypeSlug,
+} from '@/lib/tag-taxonomy'
+
+const DB_RETRY_DELAYS_MS = [300, 900] as const
+
+function sleep(ms: number): Promise<void> {
+  return new Promise((resolve) => {
+    setTimeout(resolve, ms)
+  })
+}
+
+function isTransientDbError(error: unknown): boolean {
+  if (error instanceof Prisma.PrismaClientInitializationError) {
+    return true
+  }
+  if (error instanceof Prisma.PrismaClientRustPanicError) {
+    return true
+  }
+
+  const message = error instanceof Error ? error.message.toLowerCase() : String(error).toLowerCase()
+  return (
+    message.includes("can't reach database server") ||
+    message.includes('p1001') ||
+    message.includes('connection terminated') ||
+    message.includes('timeout') ||
+    message.includes('econnreset')
+  )
+}
+
+async function withDbRetry<T>(operationName: string, task: () => Promise<T>): Promise<T> {
+  let lastError: unknown
+
+  for (let attempt = 0; attempt <= DB_RETRY_DELAYS_MS.length; attempt += 1) {
+    try {
+      return await task()
+    } catch (error) {
+      lastError = error
+      if (!isTransientDbError(error) || attempt === DB_RETRY_DELAYS_MS.length) {
+        break
+      }
+      await sleep(DB_RETRY_DELAYS_MS[attempt] ?? 0)
+    }
+  }
+
+  throw new Error(
+    `[db] ${operationName} failed: ${
+      lastError instanceof Error ? lastError.message : String(lastError)
+    }`
+  )
+}
 
 // 定义带有标签和链接的项目类型
 export type ProjectWithTagsAndLinks = Prisma.ProjectGetPayload<{
@@ -21,9 +76,25 @@ export type TagWithProjectCount = Prisma.TagGetPayload<{
   }
 }>
 
+export type FilterTagCategoryGroup = {
+  category: Exclude<TagCategory, 'FIXED_PROJECT_TYPE'>
+  name: string
+  nameEn: string
+  tags: TagWithProjectCount[]
+}
+
+export type FixedProjectTypeFilter = {
+  slug: FixedProjectTypeSlug
+  name: string
+  nameEn: string
+  projectCount: number
+}
+
 export async function getProjects(options?: {
   search?: string
   tag?: string
+  tags?: string[]
+  projectType?: string
   status?: 'ACTIVE' | 'ARCHIVED'
   page?: number
   limit?: number
@@ -39,6 +110,8 @@ export async function getProjects(options?: {
   const {
     search,
     tag,
+    tags = [],
+    projectType,
     status = 'ACTIVE',
     page = 1,
     limit = 20,
@@ -58,35 +131,74 @@ export async function getProjects(options?: {
     ]
   }
 
-  if (tag) {
-    where.tags = {
-      some: {
-        tag: {
-          slug: tag,
-        },
-      },
-    }
-  }
+  const andFilters: Prisma.ProjectWhereInput[] = []
+  const normalizedTagSlugs = Array.from(
+    new Set(
+      [tag, ...tags]
+        .map((value) => (value || '').trim())
+        .filter((value) => value.length > 0)
+    )
+  )
 
-  const [projects, total] = await Promise.all([
-    prisma.project.findMany({
-      where,
-      include: {
-        tags: {
-          include: {
-            tag: true,
+  for (const tagSlug of normalizedTagSlugs) {
+    andFilters.push({
+      tags: {
+        some: {
+          tag: {
+            slug: tagSlug,
           },
         },
-        links: true,
       },
-      orderBy: {
-        createdAt: 'desc',
+    })
+  }
+
+  if (projectType && isFixedProjectTypeSlug(projectType)) {
+    andFilters.push({
+      tags: {
+        some: {
+          tag: {
+            slug: projectType,
+          },
+        },
       },
-      skip: (page - 1) * limit,
-      take: limit,
-    }),
-    prisma.project.count({ where }),
-  ])
+    })
+  }
+
+  if (andFilters.length > 0) {
+    where.AND = andFilters
+  }
+
+  let projects: ProjectWithTagsAndLinks[] = []
+  let total = 0
+
+  try {
+    ;[projects, total] = await withDbRetry('getProjects', () =>
+      Promise.all([
+        prisma.project.findMany({
+          where,
+          include: {
+            tags: {
+              include: {
+                tag: true,
+              },
+            },
+            links: true,
+          },
+          orderBy: {
+            createdAt: 'desc',
+          },
+          skip: (page - 1) * limit,
+          take: limit,
+        }),
+        prisma.project.count({ where }),
+      ])
+    )
+  } catch (error) {
+    console.error(
+      '[db] getProjects degraded to empty result:',
+      error instanceof Error ? error.message : String(error)
+    )
+  }
 
   // Transform tags to flatten the structure
   const transformedProjects = projects.map((project) => ({
@@ -106,17 +218,19 @@ export async function getProjects(options?: {
 }
 
 export async function getProjectBySlug(slug: string): Promise<ProjectWithFlatTags | null> {
-  const project = await prisma.project.findUnique({
-    where: { slug },
-    include: {
-      tags: {
-        include: {
-          tag: true,
+  const project = await withDbRetry('getProjectBySlug', () =>
+    prisma.project.findUnique({
+      where: { slug },
+      include: {
+        tags: {
+          include: {
+            tag: true,
+          },
         },
+        links: true,
       },
-      links: true,
-    },
-  })
+    })
+  )
 
   if (!project) {
     return null
@@ -130,46 +244,65 @@ export async function getProjectBySlug(slug: string): Promise<ProjectWithFlatTag
 }
 
 export async function getAllTags(): Promise<TagWithProjectCount[]> {
-  return prisma.tag.findMany({
-    include: {
-      _count: {
-        select: { projects: true },
+  return withDbRetry('getAllTags', () =>
+    prisma.tag.findMany({
+      where: {
+        category: {
+          not: 'FIXED_PROJECT_TYPE',
+        },
       },
-    },
-    orderBy: {
-      name: 'asc',
-    },
-  })
+      include: {
+        _count: {
+          select: { projects: true },
+        },
+      },
+      orderBy: {
+        name: 'asc',
+      },
+    })
+  )
 }
 
 export async function getTagsWithProjectCounts(): Promise<TagWithProjectCount[]> {
-  const tags = await prisma.tag.findMany({
-    include: {
-      _count: {
-        select: { projects: true },
+  const tags = await withDbRetry('getTagsWithProjectCounts', () =>
+    prisma.tag.findMany({
+      where: {
+        category: {
+          not: 'FIXED_PROJECT_TYPE',
+        },
       },
-    },
-    orderBy: {
-      name: 'asc',
-    },
-  })
+      include: {
+        _count: {
+          select: { projects: true },
+        },
+      },
+      orderBy: {
+        name: 'asc',
+      },
+    })
+  )
 
   return tags.filter(tag => tag._count.projects > 0)
 }
 
 export async function getTopTags(limit: number = 10): Promise<TagWithProjectCount[]> {
-  const tags = await prisma.tag.findMany({
-    include: {
-      _count: {
-        select: { projects: true }
-      }
-    },
-    where: {
-      projects: {
-        some: {} // 只返回有项目的标签
-      }
-    }
-  })
+  const tags = await withDbRetry('getTopTags', () =>
+    prisma.tag.findMany({
+      include: {
+        _count: {
+          select: { projects: true },
+        },
+      },
+      where: {
+        category: {
+          not: 'FIXED_PROJECT_TYPE',
+        },
+        projects: {
+          some: {}, // 只返回有项目的标签
+        },
+      },
+    })
+  )
 
   // 按项目数量降序、名称升序排序
   return tags
@@ -182,6 +315,112 @@ export async function getTopTags(limit: number = 10): Promise<TagWithProjectCoun
     .slice(0, limit)
 }
 
+export async function getFixedProjectTypeFilters(
+  status: 'ACTIVE' | 'ARCHIVED' = 'ACTIVE'
+): Promise<FixedProjectTypeFilter[]> {
+  let counts: number[] = []
+
+  try {
+    counts = await withDbRetry('getFixedProjectTypeFilters', () =>
+      Promise.all(
+        FIXED_PROJECT_TYPE_TAGS.map((type) =>
+          prisma.project.count({
+            where: {
+              status,
+              tags: {
+                some: {
+                  tag: {
+                    slug: type.slug,
+                  },
+                },
+              },
+            },
+          })
+        )
+      )
+    )
+  } catch (error) {
+    console.error(
+      '[db] getFixedProjectTypeFilters degraded to zero counts:',
+      error instanceof Error ? error.message : String(error)
+    )
+  }
+
+  return FIXED_PROJECT_TYPE_TAGS.map((type, index) => ({
+    slug: type.slug,
+    name: type.name,
+    nameEn: type.nameEn,
+    projectCount: counts[index] ?? 0,
+  }))
+}
+
+export async function getTagCategoryGroups(): Promise<FilterTagCategoryGroup[]> {
+  let tags: TagWithProjectCount[] = []
+
+  try {
+    tags = await withDbRetry('getTagCategoryGroups', () =>
+      prisma.tag.findMany({
+        where: {
+          category: {
+            not: 'FIXED_PROJECT_TYPE',
+          },
+          projects: {
+            some: {},
+          },
+        },
+        include: {
+          _count: {
+            select: { projects: true },
+          },
+        },
+        orderBy: {
+          name: 'asc',
+        },
+      })
+    )
+  } catch (error) {
+    console.error(
+      '[db] getTagCategoryGroups degraded to empty groups:',
+      error instanceof Error ? error.message : String(error)
+    )
+  }
+
+  const groups = new Map<Exclude<TagCategory, 'FIXED_PROJECT_TYPE'>, TagWithProjectCount[]>()
+  for (const category of getTagCategoryOrder()) {
+    if (category === 'FIXED_PROJECT_TYPE') {
+      continue
+    }
+    groups.set(category, [])
+  }
+
+  for (const tag of tags) {
+    if (tag.category === 'FIXED_PROJECT_TYPE') {
+      continue
+    }
+    const current = groups.get(tag.category)
+    if (!current) {
+      groups.set(tag.category, [tag])
+      continue
+    }
+    current.push(tag)
+  }
+
+  return Array.from(groups.entries())
+    .map(([category, categoryTags]) => ({
+      category,
+      name: TAG_CATEGORY_META[category].name,
+      nameEn: TAG_CATEGORY_META[category].nameEn,
+      tags: categoryTags.sort((a, b) => {
+        const countDiff = b._count.projects - a._count.projects
+        if (countDiff !== 0) {
+          return countDiff
+        }
+        return a.name.localeCompare(b.name, 'zh')
+      }),
+    }))
+    .filter((group) => group.tags.length > 0)
+}
+
 // 定义 AI 搜索结果类型
 export type AISearchResultItem = ProjectWithFlatTags & {
   similarity: number
@@ -203,21 +442,23 @@ export async function getProjectsByIds(ids: string[]): Promise<ProjectWithFlatTa
     return []
   }
 
-  const projects = await prisma.project.findMany({
-    where: {
-      id: {
-        in: ids,
-      },
-    },
-    include: {
-      tags: {
-        include: {
-          tag: true,
+  const projects = await withDbRetry('getProjectsByIds', () =>
+    prisma.project.findMany({
+      where: {
+        id: {
+          in: ids,
         },
       },
-      links: true,
-    },
-  })
+      include: {
+        tags: {
+          include: {
+            tag: true,
+          },
+        },
+        links: true,
+      },
+    })
+  )
 
   // Transform tags to flatten the structure
   return projects.map((project) => ({

src/hooks/useSearch.ts

@@ -3,9 +3,16 @@ import { useSearchParams } from 'next/navigation'
 export function useSearch() {
   const searchParams = useSearchParams()
   
+  const tags = (searchParams.get('tags') || '')
+    .split(',')
+    .map((tag) => tag.trim())
+    .filter((tag) => tag.length > 0)
+
   return {
     search: searchParams.get('search') || '',
     tag: searchParams.get('tag') || '',
+    tags,
+    projectType: searchParams.get('projectType') || '',
     page: Number(searchParams.get('page')) || 1,
   }
 }

src/lib/tag-taxonomy.ts

@@ -0,0 +1,460 @@
+import type { TagCategory } from '@prisma/client'
+
+export const FIXED_PROJECT_TYPE_TAGS = [
+  {
+    slug: 'agent-tooling',
+    name: '智能体与应用工具',
+    nameEn: 'Agent & Tooling',
+  },
+  {
+    slug: 'inference-model',
+    name: '模型与推理框架',
+    nameEn: 'Model & Inference Framework',
+  },
+  {
+    slug: 'docs-tutorial',
+    name: '文档教程与资源',
+    nameEn: 'Docs, Tutorials & Resources',
+  },
+  {
+    slug: 'other-mixed',
+    name: '其他',
+    nameEn: 'Other',
+  },
+] as const
+
+export type FixedProjectTypeSlug = (typeof FIXED_PROJECT_TYPE_TAGS)[number]['slug']
+
+export const FIXED_PROJECT_TYPE_SLUGS = new Set<FixedProjectTypeSlug>(
+  FIXED_PROJECT_TYPE_TAGS.map((item) => item.slug)
+)
+
+export const TAG_CATEGORY_META: Record<TagCategory, { name: string; nameEn: string }> = {
+  FIXED_PROJECT_TYPE: {
+    name: '固定项目分类',
+    nameEn: 'Fixed Project Type',
+  },
+  TECH_STACK: {
+    name: '技术栈',
+    nameEn: 'Tech Stack',
+  },
+  AI_PARADIGM: {
+    name: 'AI 技术范式',
+    nameEn: 'AI Paradigm',
+  },
+  PROTOCOL_INTERFACE: {
+    name: '协议与接口',
+    nameEn: 'Protocol & Interface',
+  },
+  PRODUCT_FORM: {
+    name: '产品形态',
+    nameEn: 'Product Form',
+  },
+  DOMAIN_SCENARIO: {
+    name: '应用场景',
+    nameEn: 'Domain Scenario',
+  },
+  RESOURCE_TYPE: {
+    name: '资源类型',
+    nameEn: 'Resource Type',
+  },
+  FREE_TAG: {
+    name: '自由标签',
+    nameEn: 'Free Tag',
+  },
+}
+
+const TAG_CATEGORY_ORDER: TagCategory[] = [
+  'FIXED_PROJECT_TYPE',
+  'TECH_STACK',
+  'AI_PARADIGM',
+  'PROTOCOL_INTERFACE',
+  'PRODUCT_FORM',
+  'DOMAIN_SCENARIO',
+  'RESOURCE_TYPE',
+  'FREE_TAG',
+]
+
+export function getTagCategoryOrder(): TagCategory[] {
+  return [...TAG_CATEGORY_ORDER]
+}
+
+function normalize(value: string): string {
+  return value
+    .toLowerCase()
+    .replace(/[\-_]+/g, ' ')
+    .replace(/\s+/g, ' ')
+    .trim()
+}
+
+function includesAny(text: string, keywords: string[]): boolean {
+  return keywords.some((keyword) => text.includes(keyword))
+}
+
+function createNormalizedSlugSet(slugs: string[]): Set<string> {
+  return new Set(slugs.map((slug) => normalize(slug)))
+}
+
+const TECH_STACK_SLUGS = new Set([
+  'python',
+  'typescript',
+  'javascript',
+  'java',
+  'go',
+  'rust',
+  'nodejs',
+  'react',
+  'nextjs',
+  'nestjs',
+  'fastapi',
+  'spring-boot',
+  'flask',
+  'docker',
+  'postgresql',
+  'mysql',
+  'redis',
+  'electron',
+  'bun',
+  'langchain',
+  'langgraph',
+])
+
+const AI_PARADIGM_SLUGS = new Set([
+  'llm',
+  '大语言模型',
+  'rag',
+  'transformers',
+  'pytorch',
+  'machine-learning',
+  'deep-learning',
+  'reinforcement-learning',
+  'multimodal',
+  'multimodal-ai',
+  'multi-agent-system',
+  'multi-agent',
+  'autonomous-agents',
+  'vllm',
+  'llamaindex',
+  'agent-framework',
+  'ai-agent-framework',
+  'ai-agents',
+])
+
+const PROTOCOL_INTERFACE_SLUGS = new Set([
+  'model-context-protocol',
+  'mcp-protocol',
+  'openai-api',
+  'sdk',
+  'api-gateway',
+])
+
+const PRODUCT_FORM_SLUGS = new Set([
+  'cli',
+  'web-application',
+  '桌面应用',
+  'vs-code-extension',
+  'workflow-automation',
+  'automation',
+])
+
+const DOMAIN_SCENARIO_SLUGS = new Set([
+  'data-analytics',
+  '数据分析',
+  'knowledge-management',
+  '知识管理',
+  'ai-security',
+  'natural-language-processing',
+  'nlp',
+  'computer-vision',
+])
+
+const RESOURCE_TYPE_SLUGS = new Set([
+  'knowledge-base',
+  'markdown',
+  'ai-research',
+  'guide',
+  'tutorial',
+  'paper',
+])
+
+const TECH_STACK_KEYWORDS = [
+  'python',
+  'typescript',
+  'javascript',
+  'java',
+  'rust',
+  'node',
+  'react',
+  'next',
+  'fastapi',
+  'spring',
+  'docker',
+  'postgres',
+  'mysql',
+  'c#',
+  'c++',
+]
+
+const AI_PARADIGM_KEYWORDS = [
+  'llm',
+  'rag',
+  '模型',
+  'model',
+  '推理',
+  'inference',
+  'transformer',
+  '强化学习',
+  'machine learning',
+  'deep learning',
+  '多模态',
+  'multi agent',
+  '智能体',
+  'agent',
+]
+
+const PROTOCOL_INTERFACE_KEYWORDS = [
+  'mcp',
+  'protocol',
+  'api',
+  'sdk',
+  '接口',
+  '协议',
+]
+
+const PRODUCT_FORM_KEYWORDS = [
+  'cli',
+  'desktop',
+  'web app',
+  'extension',
+  'workflow',
+  'automation',
+  '命令行',
+  '桌面',
+  '插件',
+  '自动化',
+]
+
+const DOMAIN_SCENARIO_KEYWORDS = [
+  'security',
+  'analysis',
+  'knowledge',
+  'nlp',
+  'vision',
+  'speech',
+  'robot',
+  'finance',
+  '安全',
+  '分析',
+  '知识',
+  '语音',
+  '视觉',
+]
+
+const RESOURCE_TYPE_KEYWORDS = [
+  'guide',
+  'tutorial',
+  'paper',
+  'list',
+  'awesome',
+  'docs',
+  'documentation',
+  'resource',
+  '指南',
+  '教程',
+  '论文',
+  '合集',
+  '文档',
+  '资源',
+  '课程',
+]
+
+const PROJECT_DOC_KEYWORDS = [
+  ...RESOURCE_TYPE_KEYWORDS,
+  'survey',
+  '入门',
+  '学习',
+]
+
+const PROJECT_MODEL_KEYWORDS = [
+  '模型',
+  'model',
+  '推理',
+  'inference',
+  '训练',
+  'training',
+  '微调',
+  'finetune',
+  'llm',
+  'transformer',
+]
+
+const PROJECT_MODEL_TAG_SLUGS = new Set([
+  'llm',
+  '大语言模型',
+  'transformers',
+  'pytorch',
+  'machine-learning',
+  'deep-learning',
+  'reinforcement-learning',
+  'vllm',
+])
+
+const PROJECT_DOC_TAG_SLUGS = new Set([
+  'knowledge-base',
+  'markdown',
+  'ai-research',
+])
+
+const PROJECT_TOOL_TAG_SLUGS = new Set([
+  'ai-development-tool',
+  'agent-framework',
+  'ai-agent-framework',
+  'ai-agents',
+  'mcp',
+  'model-context-protocol',
+  'mcp-protocol',
+  'cli',
+  'workflow-automation',
+  'automation',
+  'openai-api',
+  'sdk',
+  'web-application',
+  '桌面应用',
+  'vs-code-extension',
+])
+
+const PROJECT_TOOL_KEYWORDS = [
+  'agent',
+  '智能体',
+  'assistant',
+  '助手',
+  'tool',
+  '工具',
+  'framework',
+  '框架',
+  'platform',
+  '平台',
+  'sdk',
+  'server',
+  'cli',
+  'mcp',
+  'workflow',
+  'automation',
+  '应用',
+  'app',
+]
+
+const PROJECT_MODEL_TAG_KEYS = createNormalizedSlugSet(Array.from(PROJECT_MODEL_TAG_SLUGS))
+const PROJECT_DOC_TAG_KEYS = createNormalizedSlugSet(Array.from(PROJECT_DOC_TAG_SLUGS))
+const PROJECT_TOOL_TAG_KEYS = createNormalizedSlugSet(Array.from(PROJECT_TOOL_TAG_SLUGS))
+
+export function isFixedProjectTypeSlug(value: string): value is FixedProjectTypeSlug {
+  return FIXED_PROJECT_TYPE_SLUGS.has(value as FixedProjectTypeSlug)
+}
+
+export function inferTagCategory(input: {
+  slug: string
+  name: string
+  nameEn?: string | null
+}): TagCategory {
+  const rawSlug = input.slug.trim().toLowerCase()
+  if (isFixedProjectTypeSlug(rawSlug)) {
+    return 'FIXED_PROJECT_TYPE'
+  }
+  const normalizedSlug = normalize(rawSlug)
+
+  if (TECH_STACK_SLUGS.has(input.slug)) {
+    return 'TECH_STACK'
+  }
+  if (AI_PARADIGM_SLUGS.has(input.slug)) {
+    return 'AI_PARADIGM'
+  }
+  if (PROTOCOL_INTERFACE_SLUGS.has(input.slug)) {
+    return 'PROTOCOL_INTERFACE'
+  }
+  if (PRODUCT_FORM_SLUGS.has(input.slug)) {
+    return 'PRODUCT_FORM'
+  }
+  if (DOMAIN_SCENARIO_SLUGS.has(input.slug)) {
+    return 'DOMAIN_SCENARIO'
+  }
+  if (RESOURCE_TYPE_SLUGS.has(input.slug)) {
+    return 'RESOURCE_TYPE'
+  }
+
+  const normalizedName = normalize(input.name)
+  const normalizedNameEn = normalize(input.nameEn || '')
+  const mergedText = `${normalizedSlug} ${normalizedName} ${normalizedNameEn}`
+
+  if (includesAny(mergedText, RESOURCE_TYPE_KEYWORDS)) {
+    return 'RESOURCE_TYPE'
+  }
+  if (includesAny(mergedText, TECH_STACK_KEYWORDS)) {
+    return 'TECH_STACK'
+  }
+  if (includesAny(mergedText, AI_PARADIGM_KEYWORDS)) {
+    return 'AI_PARADIGM'
+  }
+  if (includesAny(mergedText, PROTOCOL_INTERFACE_KEYWORDS)) {
+    return 'PROTOCOL_INTERFACE'
+  }
+  if (includesAny(mergedText, PRODUCT_FORM_KEYWORDS)) {
+    return 'PRODUCT_FORM'
+  }
+  if (includesAny(mergedText, DOMAIN_SCENARIO_KEYWORDS)) {
+    return 'DOMAIN_SCENARIO'
+  }
+
+  return 'FREE_TAG'
+}
+
+export function inferProjectTypeSlug(input: {
+  name: string
+  nameEn?: string | null
+  description: string
+  descriptionEn?: string | null
+  tags?: Array<{ slug?: string; name?: string; nameEn?: string | null }>
+}): FixedProjectTypeSlug {
+  const text = normalize(
+    [
+      input.name,
+      input.nameEn || '',
+      input.description,
+      input.descriptionEn || '',
+    ].join(' ')
+  )
+
+  const normalizedTagSlugs = (input.tags || [])
+    .map((tag) => (tag.slug ? normalize(tag.slug) : ''))
+    .filter((slug) => slug.length > 0)
+
+  const docSignal =
+    includesAny(text, PROJECT_DOC_KEYWORDS) ||
+    normalizedTagSlugs.some((slug) => PROJECT_DOC_TAG_KEYS.has(slug))
+  const modelSignal =
+    includesAny(text, PROJECT_MODEL_KEYWORDS) ||
+    normalizedTagSlugs.some((slug) => PROJECT_MODEL_TAG_KEYS.has(slug))
+  const toolSignal =
+    includesAny(text, PROJECT_TOOL_KEYWORDS) ||
+    normalizedTagSlugs.some((slug) => PROJECT_TOOL_TAG_KEYS.has(slug))
+
+  const activeSignalCount = [docSignal, modelSignal, toolSignal].filter(Boolean).length
+  if (activeSignalCount === 0 || activeSignalCount === 3) {
+    return 'other-mixed'
+  }
+
+  if (docSignal) {
+    return 'docs-tutorial'
+  }
+  if (modelSignal) {
+    return 'inference-model'
+  }
+  if (toolSignal) {
+    return 'agent-tooling'
+  }
+  return 'other-mixed'
+}
+
+export function getProjectTypeBySlug(slug: FixedProjectTypeSlug) {
+  return FIXED_PROJECT_TYPE_TAGS.find((item) => item.slug === slug)
+}

src/messages/en.json

@@ -69,7 +69,17 @@
     "onThisPage": "On this page",
     "overview": "Overview",
     "keyFeatures": "Key Features",
-    "useCases": "Use Cases"
+    "useCases": "Use Cases",
+    "browseByFilters": "Browse by Filters",
+    "fixedProjectType": "Project Type",
+    "allTypes": "All Types",
+    "filterByTagCategory": "Filter by Tag Category",
+    "searchTagsPlaceholder": "Search tags...",
+    "clearTagFilters": "Clear Tag Filters",
+    "showMoreTags": "Show more tags",
+    "showLessTags": "Show fewer tags",
+    "noMatchingTags": "No matching tags",
+    "allProjects": "All Projects"
   },
   "navigation": {
     "home": "Home",

src/messages/zh.json

@@ -69,7 +69,17 @@
     "onThisPage": "本页内容",
     "overview": "概述",
     "keyFeatures": "核心功能",
-    "useCases": "使用场景"
+    "useCases": "使用场景",
+    "browseByFilters": "按分类筛选",
+    "fixedProjectType": "固定项目分类",
+    "allTypes": "全部类型",
+    "filterByTagCategory": "按标签分类筛选",
+    "searchTagsPlaceholder": "搜索标签...",
+    "clearTagFilters": "清空标签筛选",
+    "showMoreTags": "查看更多标签",
+    "showLessTags": "收起标签",
+    "noMatchingTags": "未找到匹配标签",
+    "allProjects": "全部项目"
   },
   "navigation": {
     "home": "首页",