Remove visible input placeholders

AgentCompany-New/src/renderer/src/pages/ApprovalsPage.tsx

@@ -159,7 +159,7 @@ function ApprovalDetailDialog({
         </div>
         <textarea
           className="input"
-          placeholder="Decision notes"
+          aria-label="Decision notes"
           value={notes}
           onChange={(e) => setNotes(e.target.value)}
           rows={2}

AgentCompany-New/src/renderer/src/pages/RunsPage.tsx

@@ -52,7 +52,7 @@ export function RunsPage({ snapshot }: PageProps) {
           </div>
           <input
             className="input"
-            placeholder="Search runs"
+            aria-label="Search runs"
             value={search}
             onChange={(e) => setSearch(e.target.value)}
             style={{ marginBottom: 8 }}