Reapply "Add missing admin action files and navigation links"

This reverts commit 4d515bc400.

src/actions/save-favicon.ts

@@ -10,16 +10,23 @@ const FAVICON_DIR = "public/assets/images/media/favicon";
 const MAX_SIZE = 2 * 1024 * 1024; // 2MB
 const ALLOWED = ["image/png", "image/jpeg", "image/gif", "image/webp", "image/x-icon", "image/svg+xml"];
 
-export async function saveFavicon(formData: FormData): Promise<{ success: boolean; url?: string; error?: string }> {
+export async function saveFavicon(
+  formData: FormData,
+): Promise<{ success: boolean; url?: string; error?: string }> {
   try {
     const file = formData.get("file") as File | null;
     if (!file || file.size === 0) return { success: false, error: "No file provided" };
     if (file.size > MAX_SIZE) return { success: false, error: "File too large (max 2MB)" };
-    if (!ALLOWED.includes(file.type)) return { success: false, error: "Invalid file type. Allowed: PNG, JPEG, GIF, WebP, ICO, SVG" };
+    if (!ALLOWED.includes(file.type))
+      return { success: false, error: "Invalid file type. Allowed: PNG, JPEG, GIF, WebP, ICO, SVG" };
 
     const mimeExt: Record<string, string> = {
-      "image/png": "png", "image/jpeg": "jpg", "image/gif": "gif",
-      "image/webp": "webp", "image/x-icon": "ico", "image/svg+xml": "svg",
+      "image/png": "png",
+      "image/jpeg": "jpg",
+      "image/gif": "gif",
+      "image/webp": "webp",
+      "image/x-icon": "ico",
+      "image/svg+xml": "svg",
     };
     const ext = mimeExt[file.type] ?? "png";
     const filename = `favicon-${Date.now()}.${ext}`;
@@ -47,7 +54,9 @@ export async function saveFavicon(formData: FormData): Promise<{ success: boolea
           try {
             // eslint-disable-next-line security/detect-non-literal-fs-filename
             await unlink(oldPath);
-          } catch { /* ignore if file doesn't exist */ }
+          } catch {
+            /* ignore if file doesn't exist */
+          }
         }
       }
     }
@@ -80,7 +89,9 @@ export async function deleteFavicon(): Promise<{ success: boolean; error?: strin
           try {
             // eslint-disable-next-line security/detect-non-literal-fs-filename
             await unlink(oldPath);
-          } catch { /* ignore */ }
+          } catch {
+            /* ignore */
+          }
         }
       }
     }