chore(lint): reduce warning debt across core adapters and model clients

src/cli/setup/providers.test.ts

@@ -1,16 +1,14 @@
 import { describe, it, expect } from 'vitest';
-import { createInterface } from 'readline/promises';
-import { EventEmitter } from 'events';
+import type { Interface as ReadlineInterface } from 'readline/promises';
 import { createPrompter } from './prompts.js';
 import { ConfigBuilder } from './config.js';
 import { setupProviders } from './providers.js';
 
 function mockReadline(inputs: string[]) {
   let questionIdx = 0;
-  const emitter = new EventEmitter();
 
   return {
-    async question(query: string) {
+    async question(_query: string) {
       const answer = inputs[questionIdx++];
       return answer ?? '';
     },
@@ -26,7 +24,7 @@ function mockReadline(inputs: string[]) {
     async next() {
       return { done: true };
     },
-  } as any;
+  } as unknown as ReadlineInterface;
 }
 
 describe('setupProviders', () => {