feat: 新增 account 和 plan 目录

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

account/admin/skills/theme-factory/themes/sunset-boulevard.md

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+# Sunset Boulevard
+
+A warm and vibrant theme inspired by golden hour sunsets, perfect for energetic and creative presentations.
+
+## Color Palette
+
+- **Burnt Orange**: `#e76f51` - Primary accent color
+- **Coral**: `#f4a261` - Secondary warm accent
+- **Warm Sand**: `#e9c46a` - Highlighting and backgrounds
+- **Deep Purple**: `#264653` - Dark contrast and text
+
+## Typography
+
+- **Headers**: DejaVu Serif Bold
+- **Body Text**: DejaVu Sans
+
+## Best Used For
+
+Creative pitches, marketing presentations, lifestyle brands, event promotions, inspirational content.