new finctions and fixes

static/js/markdown.js

@@ -28,6 +28,25 @@ function safeUrl(value) {
 }
 
 const emoji = EMOJI_SHORTCODES;
+let markdownFiles = new Map();
+
+export function setMarkdownFiles(files) {
+  markdownFiles = new Map((Array.isArray(files) ? files : [])
+    .filter(file => file && file.filename && file.url)
+    .map(file => [String(file.filename), {
+      url: String(file.url),
+      mimeType: String(file.mime_type || ""),
+    }]));
+}
+
+export function unresolvedMarkdownFileAliases(value) {
+  const missing = new Set();
+  const source = String(value || "").replace(/`[^`]*`/g, "");
+  for (const match of source.matchAll(/\[(?:file|image|img)=([^,\]\s]+)(?:,[^\]]*)?\]/gi)) {
+    if (!markdownFiles.has(match[1])) missing.add(match[1]);
+  }
+  return [...missing];
+}
 
 function inline(value) {
   const tokens = [];
@@ -39,6 +58,16 @@ function inline(value) {
   let html = escapeHtml(value);
 
   html = html.replace(/`([^`]+)`/g, (_, code) => stash(`<code>${code}</code>`));
+  html = html.replace(/\[(file|image|img)=([^,\]\s]+)(?:,([^\]]*))?\]/gi, (match, kind, filename, label) => {
+    const file = markdownFiles.get(filename);
+    if (!file) return match;
+    const text = String(label || filename).trim() || filename;
+    if (kind.toLowerCase() === "file") {
+      return stash(`<a href="${safeUrl(file.url)}" target="_blank" rel="noopener noreferrer" referrerpolicy="no-referrer" data-file-alias="file" data-file-name="${filename}">${text}</a>`);
+    }
+    if (!file.mimeType.startsWith("image/")) return match;
+    return stash(`<img src="${safeUrl(file.url)}" alt="${text}" loading="lazy" decoding="async" referrerpolicy="no-referrer" draggable="false" contenteditable="false" data-file-alias="image" data-file-name="${filename}">`);
+  });
   html = html.replace(/!\[([^\]]*)\]\(([^\s)]+)(?:\s+["']([^"']*)["'])?\)/g, (_, alt, url, title) => {
     const titleAttr = title ? ` title="${escapeHtml(title)}"` : "";
     return stash(`<img src="${safeUrl(url)}" alt="${alt}" loading="lazy" decoding="async" referrerpolicy="no-referrer" draggable="false" contenteditable="false"${titleAttr}>`);