feat(knowledge): 可跳转 wikilink + 真实相关 note + 一对话多页

- [[wikilink]] 解析器：note id / vault_path / 标题 / vault 元页 / missing
- 前端 MarkdownRenderer 把非数字 [[...]] 渲染成可点链接，元页弹窗查看，缺失置灰
- vault 脚手架补建项目 hub 页，三个结构性链接（index/taxonomy/hub）始终可跳
- capture 时按标题+摘要+区分性标签检索同主题 note，注入真实 [[标题]] 到 Related + 记 related 图谱边
- LLM 提取支持 notes[] 数组，一次对话拆 1~4 页并按标题互链（multi_note_enabled 开关）
- 新增接口 POST /resolve、GET /notes/{id}/wikilinks、GET /vault-page
- 新增配置 related_notes_enabled / related_notes_limit / multi_note_enabled

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

frontend-web/src/core/knowledge/api.ts

@@ -10,6 +10,8 @@ import type {
   KnowledgeListResponse,
   KnowledgeNote,
   KnowledgeSearchItem,
+  VaultPage,
+  WikilinkResolutionMap,
 } from "./types";
 
 const baseUrl = () => `${getBackendBaseURL()}/api/knowledge`;
@@ -125,6 +127,35 @@ export async function ingestThreadsBatch(payload: BatchIngestPayload = {}) {
   );
 }
 
+/** Resolve `[[wikilink]]` targets to note ids / vault pages. */
+export async function resolveWikilinks(targets: string[]) {
+  const res = await parseResponse<{ resolved: WikilinkResolutionMap }>(
+    await apiFetch(`${baseUrl()}/resolve`, {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify({ targets }),
+    }),
+  );
+  return res.resolved;
+}
+
+/** Resolve every `[[wikilink]]` inside a note's body in one call. */
+export async function resolveNoteWikilinks(noteId: string) {
+  const res = await parseResponse<{ resolved: WikilinkResolutionMap }>(
+    await apiFetch(
+      `${baseUrl()}/notes/${encodeURIComponent(noteId)}/wikilinks`,
+    ),
+  );
+  return res.resolved;
+}
+
+/** Fetch a raw vault meta/hub Markdown page (no DB note) by its path. */
+export async function fetchVaultPage(path: string) {
+  return parseResponse<VaultPage>(
+    await apiFetch(`${baseUrl()}/vault-page?path=${encodeURIComponent(path)}`),
+  );
+}
+
 export async function exportKnowledgeGraph() {
   return parseResponse<GraphExportResult>(
     await apiFetch(`${baseUrl()}/export/graph`, { method: "POST" }),

frontend-web/src/core/knowledge/hooks.ts

@@ -9,12 +9,14 @@ import {
   createKnowledgeNote,
   deleteKnowledgeNote,
   exportKnowledgeGraph,
+  fetchVaultPage,
   getKnowledgeNote,
   ingestThread,
   ingestThreadsBatch,
   listDuplicates,
   listKnowledgeNotes,
   mergeKnowledgeNotes,
+  resolveNoteWikilinks,
   searchKnowledge,
   updateKnowledgeNote,
 } from "./api";
@@ -40,6 +42,24 @@ export function useKnowledgeNote(noteId: string | undefined) {
   });
 }
 
+export function useNoteWikilinks(noteId: string | undefined) {
+  return useQuery({
+    queryKey: [...ROOT_KEY, "wikilinks", noteId],
+    queryFn: () => resolveNoteWikilinks(noteId as string),
+    enabled: !!noteId,
+    refetchOnWindowFocus: false,
+  });
+}
+
+export function useVaultPage(path: string | undefined) {
+  return useQuery({
+    queryKey: [...ROOT_KEY, "vault-page", path],
+    queryFn: () => fetchVaultPage(path as string),
+    enabled: !!path,
+    refetchOnWindowFocus: false,
+  });
+}
+
 export function useKnowledgeSearch(query: string, enabled: boolean) {
   return useQuery({
     queryKey: [...ROOT_KEY, "search", query],

frontend-web/src/core/knowledge/types.ts

@@ -52,6 +52,27 @@ export interface KnowledgeListParams {
   offset?: number;
 }
 
+export type WikilinkKind = "note" | "vault" | "missing";
+
+export interface WikilinkResolution {
+  target: string;
+  normalized?: string;
+  kind: WikilinkKind;
+  exists: boolean;
+  note_id?: string;
+  vault_path?: string;
+  title?: string;
+}
+
+/** Map of original `[[target]]` string → its resolution. */
+export type WikilinkResolutionMap = Record<string, WikilinkResolution>;
+
+export interface VaultPage {
+  path: string;
+  title: string;
+  content_md: string;
+}
+
 export interface KnowledgeSearchItem {
   note_id: string;
   chunk_id?: string | null;