fix: restore embedded wiki images and optimize vector sync

frontend-web/src/core/llmwiki/wiki-page-markdown.ts

@@ -37,6 +37,34 @@ const WIKI_INDEX_TYPE_LABELS: Record<string, string> = {
 
 const WIKI_INDEX_TYPE_ORDER = ["summary", "entity", "concept"];
 
+export const WIKI_PROTECTED_IMAGE_MARKER = "/__llmwiki-protected-image__";
+
+const PROTECTED_WIKI_IMAGE_SOURCE =
+  /(?:storage:\/\/[0-9A-Za-z_-]+\/)?(?:resource|local|minio|cos|tos|s3|oss|ks3|obs):\/\/[^\s"'<>\])]+/gi;
+
+/**
+ * Browsers cannot load WeKnora's protected resource:// and object-storage
+ * schemes directly. Replace them with a safe marker before Markdown
+ * sanitization; the image component resolves that marker through DeerFlow.
+ */
+export function rewriteProtectedWikiImageSources(markdown: string): string {
+  return markdown.replace(
+    PROTECTED_WIKI_IMAGE_SOURCE,
+    (filePath) => `${WIKI_PROTECTED_IMAGE_MARKER}?file_path=${encodeURIComponent(filePath)}`,
+  );
+}
+
+export function parseProtectedWikiImageSource(source: string | undefined): string | null {
+  if (!source) return null;
+  try {
+    const url = new URL(source, window.location.origin);
+    if (url.pathname !== WIKI_PROTECTED_IMAGE_MARKER) return null;
+    return url.searchParams.get("file_path")?.trim() || null;
+  } catch {
+    return null;
+  }
+}
+
 export function stripWikiFrontmatter(value: string) {
   return value.replace(/^\s*---\s*\n[\s\S]*?\n---\s*(?:\n|$)/, "").trim();
 }