Align lint fixes with main and resolve merge conflicts

- Convert biome-ignore to oxlint-disable-next-line across client app
- Fix no-base-to-string with type narrowing instead of suppressions
- Fix no-floating-promises with fireAndForget() in proxy app
- Fix restrict-template-expressions with String() wrapping
- Resolve leftover merge conflict markers in manager.rs
- Remove duplicate cmd_plugin_init_errors from lib.rs
- Add graphql as explicit dependency in yaak-client

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

crates-tauri/yaak-license/index.ts

@@ -29,7 +29,7 @@ export function useLicense() {
       await queryClient.invalidateQueries({ queryKey: CHECK_QUERY_KEY });
     });
     return () => {
-      unlisten.then((fn) => fn());
+      void unlisten.then((fn) => fn());
     };
   }, []);