diff --git a/mateclaw-server/src/main/java/vip/mate/doc/DocController.java b/mateclaw-server/src/main/java/vip/mate/doc/DocController.java
new file mode 100644
index 00000000..2acf2d79
--- /dev/null
+++ b/mateclaw-server/src/main/java/vip/mate/doc/DocController.java
@@ -0,0 +1,73 @@
+package vip.mate.doc;
+
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+import vip.mate.common.result.R;
+import vip.mate.tool.builtin.MateClawDocService;
+
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * 内置帮助文档的只读接口，供前端文档查看器消费。
+ *
+ * <p>文档本体打包在 classpath:docs/{zh,en}/ 下，与给智能体用的
+ * {@link MateClawDocService} 共享同一套扫描/校验逻辑。
+ */
+@Slf4j
+@Tag(name = "Docs")
+@RestController
+@RequestMapping("/api/v1/docs")
+@RequiredArgsConstructor
+public class DocController {
+
+    private final MateClawDocService docService;
+
+    @Operation(summary = "列出某语言下的全部帮助文档（slug + 标题）")
+    @GetMapping
+    public R<List<MateClawDocService.DocMeta>> list(
+            @RequestParam(defaultValue = "zh") String lang) {
+        return R.ok(docService.list(normalizeLang(lang)));
+    }
+
+    @Operation(summary = "读取单篇帮助文档正文（已剥离 frontmatter）")
+    @GetMapping("/content")
+    public R<Map<String, Object>> content(
+            @RequestParam(defaultValue = "zh") String lang,
+            @RequestParam String slug) {
+        String normLang = normalizeLang(lang);
+        String body = docService.read(normLang, slug);
+        if (body == null) {
+            return R.fail(404, "Document not found");
+        }
+        String title = docService.list(normLang).stream()
+                .filter(d -> d.slug().equals(slug))
+                .map(MateClawDocService.DocMeta::title)
+                .findFirst()
+                .orElse(slug);
+        Map<String, Object> payload = new LinkedHashMap<>();
+        payload.put("slug", slug);
+        payload.put("title", title);
+        payload.put("content", body);
+        return R.ok(payload);
+    }
+
+    private String normalizeLang(String lang) {
+        if (lang == null) {
+            return "zh";
+        }
+        String l = lang.toLowerCase();
+        // 前端 locale 形如 zh-CN / en-US，取主语言段。
+        if (l.startsWith("en")) {
+            return "en";
+        }
+        return "zh";
+    }
+}
diff --git a/mateclaw-server/src/main/java/vip/mate/tool/builtin/MateClawDocService.java b/mateclaw-server/src/main/java/vip/mate/tool/builtin/MateClawDocService.java
new file mode 100644
index 00000000..50cb474a
--- /dev/null
+++ b/mateclaw-server/src/main/java/vip/mate/tool/builtin/MateClawDocService.java
@@ -0,0 +1,161 @@
+package vip.mate.tool.builtin;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.core.io.ClassPathResource;
+import org.springframework.core.io.Resource;
+import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
+import org.springframework.stereotype.Component;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * 内置项目文档（classpath:docs/{zh,en}/*.md）的读取服务。
+ *
+ * <p>同时服务两类消费方：给智能体运行时用的 {@link MateClawDocTool}，以及给前端
+ * 文档查看器用的 REST 接口。把 classpath 扫描、路径白名单校验、frontmatter 剥离
+ * 等逻辑收敛在这里，避免两处重复。
+ */
+@Slf4j
+@Component
+public class MateClawDocService {
+
+    /** 合法语言目录。 */
+    private static final Pattern VALID_LANG = Pattern.compile("^(zh|en)$");
+    /** 合法 slug —— 仅小写字母、数字、连字符、下划线，禁止路径穿越。 */
+    private static final Pattern VALID_SLUG = Pattern.compile("^[a-z0-9_-]+$");
+    /** 兼容 MateClawDocTool 的旧式 "lang/slug.md" 路径。 */
+    private static final Pattern VALID_PATH = Pattern.compile("^(zh|en)/[a-z0-9_-]+\\.md$");
+    private static final String DOCS_BASE = "docs/";
+    /** VitePress 首页，无正文，从用户可见列表中排除。 */
+    private static final String INDEX_SLUG = "index";
+
+    /** 开头的 YAML frontmatter 块：`---\n ... \n---`。 */
+    private static final Pattern FRONTMATTER = Pattern.compile("^---\\s*\\n.*?\\n---\\s*\\n", Pattern.DOTALL);
+    /** frontmatter 里的 `title:` 字段。 */
+    private static final Pattern TITLE_FIELD = Pattern.compile("(?m)^title:\\s*(.+?)\\s*$");
+    /** 正文里的首个 ATX 一级标题 `# xxx`。 */
+    private static final Pattern H1 = Pattern.compile("(?m)^#\\s+(.+?)\\s*$");
+
+    public record DocMeta(String slug, String title) {}
+
+    /**
+     * 列出某语言下的全部文档（排除 index.md），按 slug 排序，
+     * 每篇带一个用于展示的标题。
+     */
+    public List<DocMeta> list(String lang) {
+        if (lang == null || !VALID_LANG.matcher(lang).matches()) {
+            return List.of();
+        }
+        List<DocMeta> docs = new ArrayList<>();
+        try {
+            PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
+            Resource[] resources = resolver.getResources("classpath:docs/" + lang + "/*.md");
+            for (Resource r : resources) {
+                String filename = r.getFilename();
+                if (filename == null || !filename.endsWith(".md")) {
+                    continue;
+                }
+                String slug = filename.substring(0, filename.length() - ".md".length());
+                if (INDEX_SLUG.equals(slug)) {
+                    continue;
+                }
+                docs.add(new DocMeta(slug, resolveTitle(r, slug)));
+            }
+        } catch (IOException e) {
+            log.debug("No {} docs found: {}", lang, e.getMessage());
+        }
+        docs.sort((a, b) -> a.slug().compareTo(b.slug()));
+        return docs;
+    }
+
+    /**
+     * 读取 (lang, slug) 对应文档的正文，剥离开头的 YAML frontmatter。
+     *
+     * @return 正文内容；找不到或参数非法时返回 {@code null}。
+     */
+    public String read(String lang, String slug) {
+        if (lang == null || !VALID_LANG.matcher(lang).matches()) {
+            return null;
+        }
+        if (slug == null || !VALID_SLUG.matcher(slug).matches()) {
+            return null;
+        }
+        String raw = readRaw(lang + "/" + slug + ".md");
+        return raw == null ? null : stripFrontmatter(raw);
+    }
+
+    /**
+     * 按 "lang/slug.md" 形式读取原始文件内容（含 frontmatter），用于
+     * {@link MateClawDocTool} 的 read action。返回错误字符串以保持其旧契约。
+     */
+    String readRawForTool(String path) {
+        if (path == null || path.isBlank()) {
+            return "Error: 'path' is required when action='read'. Example: 'zh/config.md'";
+        }
+        if (!VALID_PATH.matcher(path).matches()) {
+            return "Error: Invalid path format. Expected pattern: (zh|en)/<topic>.md, e.g. 'zh/config.md'";
+        }
+        String raw = readRaw(path);
+        return raw == null ? "Error: Document not found: " + path : raw;
+    }
+
+    private String readRaw(String path) {
+        try {
+            ClassPathResource resource = new ClassPathResource(DOCS_BASE + path);
+            if (!resource.exists()) {
+                return null;
+            }
+            try (InputStream is = resource.getInputStream()) {
+                String content = new String(is.readAllBytes(), StandardCharsets.UTF_8);
+                log.info("Read doc {}: {} bytes", path, content.length());
+                return content;
+            }
+        } catch (IOException e) {
+            log.error("Failed to read doc {}: {}", path, e.getMessage());
+            return null;
+        }
+    }
+
+    private String resolveTitle(Resource resource, String slug) {
+        String raw = null;
+        try (InputStream is = resource.getInputStream()) {
+            raw = new String(is.readAllBytes(), StandardCharsets.UTF_8);
+        } catch (IOException e) {
+            log.debug("Failed to read doc for title {}: {}", slug, e.getMessage());
+        }
+        if (raw == null) {
+            return slug;
+        }
+        Matcher fm = FRONTMATTER.matcher(raw);
+        if (fm.find()) {
+            Matcher title = TITLE_FIELD.matcher(fm.group());
+            if (title.find()) {
+                return unquote(title.group(1));
+            }
+        }
+        Matcher h1 = H1.matcher(stripFrontmatter(raw));
+        if (h1.find()) {
+            return h1.group(1).trim();
+        }
+        return slug;
+    }
+
+    private static String stripFrontmatter(String raw) {
+        Matcher m = FRONTMATTER.matcher(raw);
+        return m.find() ? raw.substring(m.end()) : raw;
+    }
+
+    private static String unquote(String s) {
+        String t = s.trim();
+        if (t.length() >= 2 && ((t.startsWith("\"") && t.endsWith("\"")) || (t.startsWith("'") && t.endsWith("'")))) {
+            return t.substring(1, t.length() - 1).trim();
+        }
+        return t;
+    }
+}
diff --git a/mateclaw-server/src/main/java/vip/mate/tool/builtin/MateClawDocTool.java b/mateclaw-server/src/main/java/vip/mate/tool/builtin/MateClawDocTool.java
index 5dea619b..4619be43 100644
--- a/mateclaw-server/src/main/java/vip/mate/tool/builtin/MateClawDocTool.java
+++ b/mateclaw-server/src/main/java/vip/mate/tool/builtin/MateClawDocTool.java
@@ -2,19 +2,12 @@ package vip.mate.tool.builtin;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyDescription;
+import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.ai.tool.annotation.Tool;
-import org.springframework.core.io.ClassPathResource;
-import org.springframework.core.io.Resource;
-import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
 import org.springframework.stereotype.Component;
 
-import java.io.IOException;
-import java.io.InputStream;
-import java.nio.charset.StandardCharsets;
-import java.util.ArrayList;
 import java.util.List;
-import java.util.regex.Pattern;
 
 /**
  * MateClaw 项目文档读取工具
@@ -22,10 +15,10 @@ import java.util.regex.Pattern;
  */
 @Slf4j
 @Component
+@RequiredArgsConstructor
 public class MateClawDocTool {
 
-    private static final Pattern VALID_PATH = Pattern.compile("^(zh|en)/[a-z0-9_-]+\\.md$");
-    private static final String DOCS_BASE = "docs/";
+    private final MateClawDocService docService;
 
     @Tool(description = """
         Read MateClaw project documentation.
@@ -50,100 +43,34 @@ public class MateClawDocTool {
         if ("list".equalsIgnoreCase(action)) {
             return listDocs();
         } else if ("read".equalsIgnoreCase(action)) {
-            return readDoc(path);
+            return docService.readRawForTool(path);
         } else {
             return "Error: Unknown action '" + action + "'. Use 'list' or 'read'.";
         }
     }
 
     private String listDocs() {
-        try {
-            PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
-            List<String> zhDocs = new ArrayList<>();
-            List<String> enDocs = new ArrayList<>();
+        StringBuilder sb = new StringBuilder();
+        sb.append("MateClaw Documentation\n\n");
 
-            // Scan zh/ docs
-            try {
-                Resource[] zhResources = resolver.getResources("classpath:docs/zh/*.md");
-                for (Resource r : zhResources) {
-                    String filename = r.getFilename();
-                    if (filename != null) {
-                        zhDocs.add(filename);
-                    }
-                }
-            } catch (IOException e) {
-                log.debug("No zh docs found: {}", e.getMessage());
-            }
+        sb.append("## 中文文档 (zh/)\n");
+        appendGroup(sb, "zh");
 
-            // Scan en/ docs
-            try {
-                Resource[] enResources = resolver.getResources("classpath:docs/en/*.md");
-                for (Resource r : enResources) {
-                    String filename = r.getFilename();
-                    if (filename != null) {
-                        enDocs.add(filename);
-                    }
-                }
-            } catch (IOException e) {
-                log.debug("No en docs found: {}", e.getMessage());
-            }
+        sb.append("\n## English Docs (en/)\n");
+        appendGroup(sb, "en");
 
-            StringBuilder sb = new StringBuilder();
-            sb.append("MateClaw Documentation\n\n");
-
-            sb.append("## 中文文档 (zh/)\n");
-            if (zhDocs.isEmpty()) {
-                sb.append("  (none)\n");
-            } else {
-                zhDocs.sort(String::compareTo);
-                for (String doc : zhDocs) {
-                    sb.append("  - zh/").append(doc).append("\n");
-                }
-            }
-
-            sb.append("\n## English Docs (en/)\n");
-            if (enDocs.isEmpty()) {
-                sb.append("  (none)\n");
-            } else {
-                enDocs.sort(String::compareTo);
-                for (String doc : enDocs) {
-                    sb.append("  - en/").append(doc).append("\n");
-                }
-            }
-
-            sb.append("\nUse readMateClawDoc(action=\"read\", path=\"zh/config.md\") to read a specific doc.");
-            return sb.toString();
-
-        } catch (Exception e) {
-            log.error("Failed to list docs: {}", e.getMessage());
-            return "Error: Failed to list documentation files: " + e.getMessage();
-        }
+        sb.append("\nUse readMateClawDoc(action=\"read\", path=\"zh/config.md\") to read a specific doc.");
+        return sb.toString();
     }
 
-    private String readDoc(String path) {
-        if (path == null || path.isBlank()) {
-            return "Error: 'path' is required when action='read'. Example: 'zh/config.md'";
+    private void appendGroup(StringBuilder sb, String lang) {
+        List<MateClawDocService.DocMeta> docs = docService.list(lang);
+        if (docs.isEmpty()) {
+            sb.append("  (none)\n");
+            return;
         }
-
-        // Security: validate path format
-        if (!VALID_PATH.matcher(path).matches()) {
-            return "Error: Invalid path format. Expected pattern: (zh|en)/<topic>.md, e.g. 'zh/config.md'";
-        }
-
-        try {
-            ClassPathResource resource = new ClassPathResource(DOCS_BASE + path);
-            if (!resource.exists()) {
-                return "Error: Document not found: " + path;
-            }
-
-            try (InputStream is = resource.getInputStream()) {
-                String content = new String(is.readAllBytes(), StandardCharsets.UTF_8);
-                log.info("Read doc {}: {} bytes", path, content.length());
-                return content;
-            }
-        } catch (IOException e) {
-            log.error("Failed to read doc {}: {}", path, e.getMessage());
-            return "Error: Failed to read document: " + e.getMessage();
+        for (MateClawDocService.DocMeta doc : docs) {
+            sb.append("  - ").append(lang).append('/').append(doc.slug()).append(".md\n");
         }
     }
 }
diff --git a/mateclaw-server/src/test/java/vip/mate/tool/builtin/MateClawDocServiceTest.java b/mateclaw-server/src/test/java/vip/mate/tool/builtin/MateClawDocServiceTest.java
new file mode 100644
index 00000000..e7089df7
--- /dev/null
+++ b/mateclaw-server/src/test/java/vip/mate/tool/builtin/MateClawDocServiceTest.java
@@ -0,0 +1,69 @@
+package vip.mate.tool.builtin;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import java.util.List;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * 针对内置文档服务的单元测试。直接读 classpath 上打包的真实文档
+ * （src/main/resources/docs/{zh,en}/），不需要额外测试资源。
+ */
+class MateClawDocServiceTest {
+
+    private final MateClawDocService service = new MateClawDocService();
+
+    @Test
+    @DisplayName("list(zh) 返回文档且排除 VitePress 首页 index.md")
+    void listExcludesIndex() {
+        List<MateClawDocService.DocMeta> docs = service.list("zh");
+
+        assertThat(docs).isNotEmpty();
+        assertThat(docs).noneMatch(d -> d.slug().equals("index"));
+        // config.md 一定存在，且标题取的是中文 H1 而非文件名。
+        assertThat(docs)
+                .filteredOn(d -> d.slug().equals("config"))
+                .singleElement()
+                .satisfies(d -> assertThat(d.title()).isNotBlank().isNotEqualTo("config"));
+    }
+
+    @Test
+    @DisplayName("list 对非法语言返回空")
+    void listRejectsInvalidLang() {
+        assertThat(service.list("fr")).isEmpty();
+        assertThat(service.list("../zh")).isEmpty();
+        assertThat(service.list(null)).isEmpty();
+    }
+
+    @Test
+    @DisplayName("read 剥离开头的 YAML frontmatter")
+    void readStripsFrontmatter() {
+        // wiki.md 带 frontmatter（title/description/head）。
+        String body = service.read("zh", "wiki");
+
+        assertThat(body).isNotNull();
+        assertThat(body.stripLeading()).doesNotStartWith("---");
+        // `name: keywords` 只出现在 frontmatter 的 head meta 里，剥离后不应残留。
+        assertThat(body).doesNotContain("name: keywords");
+    }
+
+    @Test
+    @DisplayName("read 拒绝非法 slug / 路径穿越")
+    void readRejectsInvalidSlug() {
+        assertThat(service.read("zh", "../application")).isNull();
+        assertThat(service.read("zh", "config.md")).isNull();
+        assertThat(service.read("zh", "a/b")).isNull();
+        assertThat(service.read("fr", "config")).isNull();
+        assertThat(service.read("zh", "does-not-exist-xyz")).isNull();
+    }
+
+    @Test
+    @DisplayName("readRawForTool 保留 frontmatter 并对非法路径返回错误串")
+    void readRawForToolContract() {
+        assertThat(service.readRawForTool("zh/config.md")).doesNotStartWith("Error:");
+        assertThat(service.readRawForTool("../etc/passwd")).startsWith("Error:");
+        assertThat(service.readRawForTool(null)).startsWith("Error:");
+    }
+}
diff --git a/mateclaw-ui/src/api/index.ts b/mateclaw-ui/src/api/index.ts
index fe56f934..49a5c439 100644
--- a/mateclaw-ui/src/api/index.ts
+++ b/mateclaw-ui/src/api/index.ts
@@ -1426,3 +1426,26 @@ export const approvalApi = {
     limit?: number
   }) => http.get<ResolutionLog[]>('/approval/resolutions', { params }),
 }
+
+// ==================== 内置帮助文档 ====================
+
+export interface DocMeta {
+  slug: string
+  title: string
+}
+
+export interface DocContent {
+  slug: string
+  title: string
+  content: string
+}
+
+export const docsApi = {
+  /** 列出某语言下的全部帮助文档（slug + 标题）。 */
+  list: (lang: string) =>
+    http.get<DocMeta[]>('/docs', { params: { lang } }),
+
+  /** 读取单篇文档正文（已剥离 frontmatter）。 */
+  content: (lang: string, slug: string) =>
+    http.get<DocContent>('/docs/content', { params: { lang, slug } }),
+}
diff --git a/mateclaw-ui/src/i18n/locales/en-US.ts b/mateclaw-ui/src/i18n/locales/en-US.ts
index e180df62..bcc38be5 100644
--- a/mateclaw-ui/src/i18n/locales/en-US.ts
+++ b/mateclaw-ui/src/i18n/locales/en-US.ts
@@ -413,6 +413,9 @@ export default {
     timeMinutesAgo: '{n}m ago',
     timeHoursAgo: '{n}h ago',
   },
+  docs: {
+    title: 'Docs',
+  },
   nav: {
     dashboard: 'Dashboard',
     chat: 'Chat',
@@ -439,6 +442,7 @@ export default {
     settingsGroup: 'Settings',
     agents: 'Employees',
     security: 'Security',
+    docs: 'Docs',
     tokenUsage: 'Token Usage',
     cronJobs: 'Cron Jobs',
     scheduler: 'Scheduler',
diff --git a/mateclaw-ui/src/i18n/locales/zh-CN.ts b/mateclaw-ui/src/i18n/locales/zh-CN.ts
index 9536ecce..ab12d221 100644
--- a/mateclaw-ui/src/i18n/locales/zh-CN.ts
+++ b/mateclaw-ui/src/i18n/locales/zh-CN.ts
@@ -413,6 +413,9 @@ export default {
     timeMinutesAgo: '{n} 分钟前',
     timeHoursAgo: '{n} 小时前',
   },
+  docs: {
+    title: '帮助文档',
+  },
   nav: {
     dashboard: '仪表盘',
     chat: '对话',
@@ -439,6 +442,7 @@ export default {
     settingsGroup: '设置',
     agents: '员工',
     security: '安全',
+    docs: '帮助文档',
     tokenUsage: 'Token 统计',
     cronJobs: '定时任务',
     scheduler: '调度中心',
diff --git a/mateclaw-ui/src/router/index.ts b/mateclaw-ui/src/router/index.ts
index 0be63caa..5b6e92c8 100644
--- a/mateclaw-ui/src/router/index.ts
+++ b/mateclaw-ui/src/router/index.ts
@@ -66,6 +66,14 @@ const router = createRouter({
           component: () => import('@/views/Memory/index.vue'),
           meta: { title: 'Memory', requiredCapability: 'view:memory' },
         },
+        {
+          // 内置帮助文档查看器。:slug? 让刷新 / 收藏能恢复当前文档。
+          // 不加 requiredCapability —— 所有登录用户可见。
+          path: 'docs/:slug?',
+          name: 'Docs',
+          component: () => import('@/views/Docs/index.vue'),
+          meta: { title: 'Docs' },
+        },
         // ==================== Connect ====================
         {
           path: 'channels',
diff --git a/mateclaw-ui/src/views/Docs/index.vue b/mateclaw-ui/src/views/Docs/index.vue
new file mode 100644
index 00000000..16c602a0
--- /dev/null
+++ b/mateclaw-ui/src/views/Docs/index.vue
@@ -0,0 +1,207 @@
+<template>
+  <div class="docs-page">
+    <aside class="docs-sidebar">
+      <div class="docs-sidebar__title">{{ t('docs.title') }}</div>
+      <nav class="docs-nav">
+        <button
+          v-for="doc in docs"
+          :key="doc.slug"
+          class="docs-nav__item"
+          :class="{ 'docs-nav__item--active': doc.slug === activeSlug }"
+          @click="selectDoc(doc.slug)"
+        >
+          {{ doc.title }}
+        </button>
+      </nav>
+    </aside>
+
+    <main class="docs-content">
+      <div v-if="loading" class="docs-state">{{ t('common.loading') }}</div>
+      <div v-else-if="error" class="docs-state docs-state--error">{{ error }}</div>
+      <article
+        v-else
+        ref="contentEl"
+        class="markdown-body docs-article"
+        v-html="rendered"
+        @click="onContentClick"
+      />
+    </main>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { computed, onMounted, ref, watch } from 'vue'
+import { useI18n } from 'vue-i18n'
+import { useRoute, useRouter } from 'vue-router'
+import { docsApi, type DocMeta } from '@/api'
+import { useMarkdownRenderer } from '@/composables/useMarkdownRenderer'
+
+const { t, locale } = useI18n()
+const route = useRoute()
+const router = useRouter()
+const { renderMarkdown } = useMarkdownRenderer()
+
+const docs = ref<DocMeta[]>([])
+const activeSlug = ref<string>('')
+const content = ref<string>('')
+const loading = ref(false)
+const error = ref<string>('')
+const contentEl = ref<HTMLElement | null>(null)
+
+// 后端文档目录只分 zh / en，取 app locale 的主语言段。
+const lang = computed(() => (locale.value.startsWith('en') ? 'en' : 'zh'))
+
+// Wikilink 替换是 chat 专用语义，文档里不需要；关掉避免误伤 [[...]] 文本。
+const rendered = computed(() => renderMarkdown(content.value, { wikilink: 'none' }))
+
+async function loadList() {
+  try {
+    const res: any = await docsApi.list(lang.value)
+    docs.value = res.data || []
+  } catch (e) {
+    docs.value = []
+    error.value = e instanceof Error ? e.message : String(e)
+  }
+}
+
+async function loadContent(slug: string) {
+  if (!slug) return
+  loading.value = true
+  error.value = ''
+  try {
+    const res: any = await docsApi.content(lang.value, slug)
+    content.value = res.data?.content || ''
+    activeSlug.value = slug
+    contentEl.value?.scrollTo({ top: 0 })
+  } catch (e) {
+    content.value = ''
+    error.value = e instanceof Error ? e.message : String(e)
+  } finally {
+    loading.value = false
+  }
+}
+
+function selectDoc(slug: string) {
+  if (slug === activeSlug.value) return
+  router.push({ name: 'Docs', params: { slug } })
+}
+
+// 拦截文档间的相对链接（如 ./security、models），转成 SPA 内导航，避免整页刷新。
+// 外链（target=_blank，由 renderer 标注）保持默认行为。
+function onContentClick(e: MouseEvent) {
+  const anchor = (e.target as HTMLElement)?.closest('a')
+  if (!anchor) return
+  if (anchor.target === '_blank') return
+  const href = anchor.getAttribute('href') || ''
+  if (!href || href.startsWith('#')) return
+  const m = /^(?:\.\/|\.\.\/)?([a-z0-9_-]+)(?:\.md)?(?:[#?].*)?$/i.exec(href)
+  if (!m) return
+  const slug = m[1].toLowerCase()
+  if (!docs.value.some((d) => d.slug === slug)) return
+  e.preventDefault()
+  selectDoc(slug)
+}
+
+// 路由 slug 变化 → 加载对应文档；无 slug 时回退到第一篇。
+watch(
+  () => route.params.slug,
+  (slug) => {
+    const target = (slug as string) || docs.value[0]?.slug
+    if (target && target !== activeSlug.value) {
+      loadContent(target)
+    }
+  },
+)
+
+// 切换 app 语言 → 重新拉目录并重载当前文档。
+watch(lang, async () => {
+  await loadList()
+  const target = activeSlug.value || docs.value[0]?.slug
+  if (target) await loadContent(target)
+})
+
+onMounted(async () => {
+  await loadList()
+  const slug = route.params.slug as string
+  if (slug) {
+    await loadContent(slug)
+  } else if (docs.value[0]) {
+    // 落到第一篇：改写 URL，由 slug watcher 负责加载（避免重复请求）。
+    router.replace({ name: 'Docs', params: { slug: docs.value[0].slug } })
+  }
+})
+</script>
+
+<style scoped>
+.docs-page {
+  display: flex;
+  height: 100%;
+  overflow: hidden;
+}
+
+.docs-sidebar {
+  width: 240px;
+  flex-shrink: 0;
+  border-right: 1px solid var(--border-color, #e5e7eb);
+  overflow-y: auto;
+  padding: 16px 8px;
+}
+
+.docs-sidebar__title {
+  font-size: 13px;
+  font-weight: 600;
+  color: var(--text-secondary, #6b7280);
+  padding: 0 12px 8px;
+  text-transform: uppercase;
+  letter-spacing: 0.05em;
+}
+
+.docs-nav {
+  display: flex;
+  flex-direction: column;
+  gap: 2px;
+}
+
+.docs-nav__item {
+  text-align: left;
+  border: none;
+  background: transparent;
+  color: var(--text-primary, #111827);
+  padding: 7px 12px;
+  border-radius: 6px;
+  font-size: 14px;
+  cursor: pointer;
+  transition: background 0.12s;
+}
+
+.docs-nav__item:hover {
+  background: var(--hover-bg, #f3f4f6);
+}
+
+.docs-nav__item--active {
+  background: var(--active-bg, #eef2ff);
+  color: var(--primary-color, #4f46e5);
+  font-weight: 600;
+}
+
+.docs-content {
+  flex: 1;
+  overflow-y: auto;
+  padding: 28px 40px;
+}
+
+.docs-article {
+  max-width: 860px;
+  margin: 0 auto;
+}
+
+.docs-state {
+  color: var(--text-secondary, #6b7280);
+  padding: 40px;
+  text-align: center;
+}
+
+.docs-state--error {
+  color: var(--danger-color, #dc2626);
+}
+</style>
diff --git a/mateclaw-ui/src/views/layout/MainLayout.vue b/mateclaw-ui/src/views/layout/MainLayout.vue
index aa0e38b0..81d7157a 100644
--- a/mateclaw-ui/src/views/layout/MainLayout.vue
+++ b/mateclaw-ui/src/views/layout/MainLayout.vue
@@ -534,6 +534,11 @@ const navGroups = computed(() => [
         icon: `<svg width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z"/></svg>`,
         requiredCapability: 'manage:security',
       },
+      {
+        path: '/docs',
+        label: t('nav.docs'),
+        icon: `<svg width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M2 3h6a4 4 0 0 1 4 4v14a3 3 0 0 0-3-3H2z"/><path d="M22 3h-6a4 4 0 0 0-4 4v14a3 3 0 0 1 3-3h7z"/></svg>`,
+      },
     ] as NavItem[]),
   },
 ].filter((group) => group.items.length > 0))
@@ -554,6 +559,9 @@ function isNavItemActive(item: { path: string; label: string }) {
   if (item.path === '/security') {
     return route.path.startsWith('/security')
   }
+  if (item.path === '/docs') {
+    return route.path.startsWith('/docs')
+  }
   return route.path === item.path
 }