fix: silence unused prop TS error in ProjectList

onSelectSession is part of the public ProjectListProps interface but
not used inside the component body, breaking pnpm build. Prefix with _
to keep the type stable.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: MarkShawn2020

src/views/Chat/ProjectList.tsx

@@ -103,7 +103,7 @@ const composerPtyHeightAtom = atomWithStorage<number>(
   PTY_HEIGHT_DEFAULT,
 );
 
-export function ProjectList({ onSelectProject, onSelectSession }: ProjectListProps) {
+export function ProjectList({ onSelectProject, onSelectSession: _onSelectSession }: ProjectListProps) {
   const toReadable = useReadableText();
   const queryClient = useQueryClient();