fix(web): show the full path in file link tooltips (#7741)

Co-authored-by: John William Creighton (s243a) <s243a@users.noreply.github.com>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>

Author: s243a

apps/web/src/components/ChatMarkdown.tsx

@@ -1323,8 +1323,10 @@ const MarkdownFileLink = memo(function MarkdownFileLink({
         side="top"
         className="max-w-[min(40rem,calc(100vw-2rem))] font-mono text-[11px] leading-tight"
       >
+        {/* The full path: the chip already shows the shortened form, and a link
+            to the workspace root collapses to a bare label that repeats it. */}
         <div className="overflow-x-auto whitespace-nowrap [scrollbar-color:color-mix(in_srgb,var(--border)_78%,transparent)_transparent] [scrollbar-width:thin] [&::-webkit-scrollbar]:h-1.5 [&::-webkit-scrollbar-thumb]:rounded-full [&::-webkit-scrollbar-thumb]:bg-[color-mix(in_srgb,var(--border)_78%,transparent)] [&::-webkit-scrollbar-track]:bg-transparent">
-          {displayPath}
+          {targetPath}
         </div>
       </TooltipPopup>
     </Tooltip>