Feat/settings page redesign (#104)

* include credentials on login fetch requests, allows set header response

* Add theme composable and utility improvements

- Create useTheme composable for centralized theme management
- Update main.ts to use useTheme for initialization
- Generalize getCookie utility in user module
- Add utility functions for data formatting

* Add Plex integration composables and icons

- Create usePlexAuth composable for Plex OAuth flow
- Create usePlexApi composable for Plex API interactions
- Create useRandomWords composable for password generation
- Add Plex-related icons (IconPlex, IconServer, IconSync)
- Add Plex helper utilities
- Update API with Plex-related endpoints

* Add storage management components for data & privacy section

- Create StorageManager component for browser storage overview
- Create StorageSectionBrowser for localStorage/sessionStorage/cookies
- Create StorageSectionServer for server-side data (mock)
- Create ExportSection for data export functionality
- Refactor DataExport component with modular sections
- Add storage icons (IconCookie, IconDatabase, IconTimer)
- Implement collapsible sections with visual indicators
- Add colored borders per storage type
- Display item counts and total size in headers

* Add theme, password, and security settings components

- Create ThemePreferences with visual theme selector
- Create PasswordGenerator with passphrase and random modes
- Create SecuritySettings wrapper for password management
- Update ChangePassword to work with new layout
- Implement improved slider UX with visual feedback
- Add theme preview cards with gradients
- Standardize component styling and typography

* Add Plex settings and authentication components

- Create PlexSettings component for Plex account management
- Create PlexAuthButton with improved OAuth flow
- Create PlexServerInfo for server details display
- Use icon components instead of inline SVGs
- Add sync and unlink functionality
- Implement user-friendly authentication flow

* Redesign settings page with two-column layout and ProfileHero

- Create ProfileHero component with avatar and user info
- Create RequestHistory component for Plex requests (placeholder)
- Redesign SettingsPage with modern two-column grid layout
- Add shared-settings.scss for consistent styling
- Organize sections: Appearance, Security, Integrations, Data & Privacy
- Implement responsive mobile layout
- Standardize typography (h2: 1.5rem, 700 weight)
- Add compact modifier for tighter sections

src/components/settings/DangerZoneAction.vue

@@ -0,0 +1,72 @@
+<template>
+  <div class="danger-zone">
+    <h3 class="danger-zone__title">{{ title }}</h3>
+    <p class="danger-zone__description">
+      {{ description }}
+    </p>
+    <button class="danger-zone__button" @click="$emit('action')">
+      {{ buttonText }}
+    </button>
+  </div>
+</template>
+
+<script setup lang="ts">
+  interface Props {
+    title: string;
+    description: string;
+    buttonText: string;
+  }
+
+  interface Emit {
+    (e: "action"): void;
+  }
+
+  defineProps<Props>();
+  defineEmits<Emit>();
+</script>
+
+<style lang="scss" scoped>
+  @import "scss/variables";
+  @import "scss/media-queries";
+
+  .danger-zone {
+    padding: 1.25rem;
+    background: rgba(220, 48, 35, 0.1);
+    border: 1px solid var(--color-error-highlight);
+    border-radius: 0.5rem;
+
+    @include mobile-only {
+      padding: 1rem;
+    }
+
+    &__title {
+      margin: 0 0 0.5rem 0;
+      font-size: 1.1rem;
+      font-weight: 600;
+      color: var(--color-error-highlight);
+    }
+
+    &__description {
+      margin: 0 0 1rem 0;
+      font-size: 0.875rem;
+      color: var(--text-color-70);
+      line-height: 1.5;
+    }
+
+    &__button {
+      padding: 0.625rem 1.25rem;
+      background: var(--color-error);
+      color: white;
+      border: 1px solid var(--color-error-highlight);
+      border-radius: 0.375rem;
+      font-size: 0.875rem;
+      font-weight: 600;
+      cursor: pointer;
+      transition: all 0.2s ease;
+
+      &:hover {
+        background: var(--color-error-highlight);
+      }
+    }
+  }
+</style>