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/yaak-models/guest-js/store.ts

@@ -86,6 +86,7 @@ export function getModel<M extends AnyModel["model"], T extends ExtractModel<Any
 export function getAnyModel(id: string): AnyModel | null {
   let data = mustStore().get(modelStoreDataAtom);
   for (const t of Object.keys(data)) {
+    // oxlint-disable-next-line no-explicit-any -- dynamic key access
     let v = (data as any)[t]?.[id];
     if (v?.model === t) return v;
   }