UX: Update Setup, Settings, and Help pages with user-friendly text

- Setup: Changed 'Add Keywords' to 'Find Keywords'
- Account Settings: Updated description to be more user-friendly
- AI Settings: Updated description to explain AI models and preferences
- General Settings: Changed to 'App Preferences' with clearer description
- Help: Changed 'Help & Documentation' to 'Help Center' with friendlier description

frontend/src/pages/Settings/AI.tsx

@@ -30,7 +30,7 @@ export default function AISettings() {
       <PageMeta title="AI Settings" />
       <div className="mb-6">
         <h1 className="text-2xl font-bold text-gray-900 dark:text-white">AI Settings</h1>
-        <p className="text-gray-600 dark:text-gray-400 mt-1">AI-specific configuration</p>
+        <p className="text-gray-600 dark:text-gray-400 mt-1">Configure AI models and writing preferences</p>
       </div>
 
       {loading ? (

frontend/src/pages/Settings/Account.tsx

@@ -30,7 +30,7 @@ export default function AccountSettings() {
       <PageMeta title="Account Settings" />
       <div className="mb-6">
         <h1 className="text-2xl font-bold text-gray-900 dark:text-white">Account Settings</h1>
-        <p className="text-gray-600 dark:text-gray-400 mt-1">Account-level configuration</p>
+        <p className="text-gray-600 dark:text-gray-400 mt-1">Manage your account preferences and profile</p>
       </div>
 
       {loading ? (

frontend/src/pages/Settings/General.tsx

@@ -38,9 +38,9 @@ export default function GeneralSettings() {
   
   return (
     <>
-      <PageMeta title="General Settings - IGNY8" description="Plugin configuration" />
+      <PageMeta title="App Preferences - IGNY8" description="Customize your IGNY8 experience" />
       
-      <ComponentCard title="General Settings" desc="Configure plugin settings, automation, and table preferences">
+      <ComponentCard title="App Preferences" desc="Customize table views, automation settings, and interface preferences">
         <div className="space-y-6">
           {/* Table Settings */}
           <div className="space-y-4">