Fix ESLint errors and warnings in main codebase

- Fix TypeScript error: Replace 'any' type with specific union type in teams API
- Remove unused variable assignment in obsClient.js
- Remove unused error binding in apiHelpers.ts catch block
- Disable exhaustive-deps rule for custom hook with dynamic dependencies

All blocking linter errors resolved. Remaining warnings are in test files only.

🤖 Generated with [Claude Code](https://claude.ai/code)

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

lib/performance.ts

@@ -193,5 +193,6 @@ export function useSmartPolling(
         intervalRef.current = null;
       }
     };
+  // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [interval, isVisible, ...dependencies]);
 }