Fix org-hugo link export to render proper Markdown links

- Handle http/https/ftp links explicitly using :raw-link for full URL
- Resolve org-id links via org-id-find to use filename slug instead of raw UUID
- Replace unused path alias with raw-link property

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

config.el

@@ -647,15 +647,23 @@
   "Render org links as vanilla Markdown links instead of Hugo relref."
   (let* ((type (org-element-property :type link))
          (raw-path (org-element-property :path link))
-         (path raw-path))
+         (raw-link (org-element-property :raw-link link)))
     (cond
-     ;; File links - convert to plain markdown
+     ;; External links - plain markdown
+     ((member type '("http" "https" "ftp"))
+      (format "[%s](%s)" (or desc raw-link) raw-link))
+     ;; ID links - resolve org-id to file slug
      ((string= type "id")
-      (format "[%s](%s)" (or desc path) path))
+      (let* ((id-location (org-id-find raw-path))
+             (file (when id-location (car id-location)))
+             (slug (if file
+                       (file-name-sans-extension (file-name-nondirectory file))
+                     raw-path)))
+        (format "[%s](%s)" (or desc slug) slug)))
      ;; Fuzzy/internal links - convert to anchor links
      ((string= type "fuzzy")
-      (format "[%s](#%s)" (or desc path) 
-              (org-hugo-slug path)))
+      (format "[%s](#%s)" (or desc raw-path)
+              (org-hugo-slug raw-path)))
      ;; Default: use original behavior for other link types
      (t nil))))