feat: add ESLint and Prettier with pre-commit hook

- Install ESLint 9 with TypeScript and React support
- Install Prettier with custom configuration (no semicolons)
- Add husky and lint-staged for pre-commit hooks
- Configure lint-staged to auto-fix and format on commit
- Relax ESLint rules to avoid large-scale code changes
- Format all existing code with Prettier (no semicolons)

Co-Authored-By: tinkle-community <tinklefund@gmail.com>

web/src/lib/config.ts

@@ -1,28 +1,26 @@
 export interface SystemConfig {
-  admin_mode: boolean;
-  beta_mode: boolean;
+  admin_mode: boolean
+  beta_mode: boolean
 }
 
-let configPromise: Promise<SystemConfig> | null = null;
-let cachedConfig: SystemConfig | null = null;
+let configPromise: Promise<SystemConfig> | null = null
+let cachedConfig: SystemConfig | null = null
 
 export function getSystemConfig(): Promise<SystemConfig> {
   if (cachedConfig) {
-    return Promise.resolve(cachedConfig);
+    return Promise.resolve(cachedConfig)
   }
   if (configPromise) {
-    return configPromise;
+    return configPromise
   }
   configPromise = fetch('/api/config')
     .then((res) => res.json())
     .then((data: SystemConfig) => {
-      cachedConfig = data;
-      return data;
+      cachedConfig = data
+      return data
     })
     .finally(() => {
       // Keep cachedConfig for reuse; allow re-fetch via explicit invalidation if added later
-    });
-  return configPromise;
+    })
+  return configPromise
 }
-
-