fix: word the cases-folder refusal for Clone Repo too (release review)

Clone Repo's picker now offers New folder, and with the field empty Browse
opens in the cases folder, so the first press there lands on this refusal.
It pointed at Add Case > Create New, which cannot clone. The sentence has to
read right from every picker that offers the button, so it names both tabs.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/web/routes/file-routes.ts

@@ -1567,8 +1567,9 @@ export function registerFileRoutes(app: FastifyInstance, ctx: SessionPort & Even
     // The cases directories (shared, and the caller's own in multi-user mode) are what GET /api/cases lists as
     // local cases: a folder made there is a case with no scaffold, which Link then refuses by name and which
     // deleting would take the linked folder with. A case there is made through Add Case > Create New with no
-    // custom folder. The refusal has to read right from both pickers that offer New folder: a Create New user
-    // is already on that tab, with the custom folder ticked.
+    // custom folder. The refusal has to read right from every picker that offers New folder: a Create New or
+    // Clone Repo user is already on that tab, with the custom folder ticked, and this is where Browse opens
+    // while the field is empty.
     const casesDirs = await Promise.all(
       [...new Set([CASES_DIR, resolveCasesDir(getAuthUser(req))])].map((dir) =>
         fs.realpath(dir).catch(() => resolve(dir))
@@ -1578,7 +1579,7 @@ export function registerFileRoutes(app: FastifyInstance, ctx: SessionPort & Even
       reply.code(400);
       return createErrorResponse(
         ApiErrorCode.INVALID_INPUT,
-        'This is a cases folder: every folder in it is a case. Pick a folder outside it, or make the case with Add Case > Create New (no custom folder).'
+        'This is a cases folder: every folder in it is a case. Pick a folder outside it, or make the case with Add Case > Create New or Clone Repo (no custom folder).'
       );
     }
     // Like browse, a file is not a place to create in.