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>

apps/yaak-proxy/hooks/useActionMetadata.ts

@@ -3,11 +3,13 @@ import { useEffect, useState } from "react";
 import { rpc } from "../lib/rpc";
 
 /** Look up metadata for a specific action invocation. */
+// oxlint-disable-next-line no-redundant-type-constituents -- ActionMetadata resolves at runtime
 export function useActionMetadata(action: ActionInvocation): ActionMetadata | null {
+  // oxlint-disable-next-line no-redundant-type-constituents -- ActionMetadata resolves at runtime
   const [meta, setMeta] = useState<ActionMetadata | null>(null);
 
   useEffect(() => {
-    getActions().then((actions) => {
+    void getActions().then((actions) => {
       const match = actions.find(
         ([inv]) => inv.scope === action.scope && inv.action === action.action,
       );