fix(ui): always strip @ for SHIFT+ENTER paths regardless of file attachment

packages/ui/src/lib/prompt-placeholders.ts

@@ -22,18 +22,13 @@ export function resolvePastedPlaceholders(prompt: string, attachments: Attachmen
 
   let result = prompt
 
-  // For each path attachment, find and replace @path with path in the prompt
-  // This is more precise than regex and won't affect regular @mentions
+  // For each path attachment (SHIFT+ENTER), find and replace @path with path in the prompt
+  // We ALWAYS strip @ for SHIFT+ENTER paths, even if there's also a file attachment
   for (const path of pathAttachments) {
     // Try both with and without trailing slash
     const variants = [path, path + "/"]
 
     for (const variant of variants) {
-      // Skip if this path is also a file attachment (should keep @)
-      if (fileAttachments.has(variant) || fileAttachments.has(variant.replace(/\/$/, ""))) {
-        continue
-      }
-
       // Replace @path with path (exact match)
       const searchPattern = "@" + variant
       result = result.split(searchPattern).join(variant)