fix: resolve all linting and TypeScript issues

- Set up comprehensive ESLint configuration with TypeScript support
- Fix React import issues by adding explicit React imports
- Replace 'any' types with proper TypeScript types (unknown, specific interfaces)
- Add proper type definitions for addressLoader function signature
- Make relays parameter optional in addressLoader interface
- Fix TypeScript strict null checks and function call signatures
- Ensure all code passes ESLint with zero warnings
- Verify TypeScript compilation with no errors
- Maintain strict linting rules without reducing code quality

All linting and type checking now passes successfully.

src/components/Bookmarks.tsx

@@ -1,4 +1,4 @@
-import { useState, useEffect } from 'react'
+import React, { useState, useEffect } from 'react'
 import { Hooks } from 'applesauce-react'
 import { NostrEvent } from 'nostr-tools'
 
@@ -12,7 +12,13 @@ interface Bookmark {
 }
 
 interface BookmarksProps {
-  addressLoader: any
+  addressLoader: ((params: { kind: number; pubkey: string; relays?: string[] }) => {
+    subscribe: (observer: {
+      next: (event: NostrEvent) => void;
+      error: (error: unknown) => void;
+      complete: () => void;
+    }) => { unsubscribe: () => void };
+  }) | null
   onLogout: () => void
 }
 
@@ -49,7 +55,7 @@ const Bookmarks: React.FC<BookmarksProps> = ({ addressLoader, onLogout }) => {
             bookmarkList.push(bookmarkData)
           }
         },
-        error: (error: any) => {
+            error: (error: unknown) => {
           console.error('Error fetching bookmarks:', error)
           setLoading(false)
         },

src/components/Login.tsx

@@ -1,4 +1,4 @@
-import { useState } from 'react'
+import React, { useState } from 'react'
 import { Hooks } from 'applesauce-react'
 import { Accounts } from 'applesauce-accounts'