feat: Import 35+ skills, merge duplicates, add openclaw installer

Major updates:
- Added 35+ new skills from awesome-opencode-skills and antigravity repos
- Merged SEO skills into seo-master
- Merged architecture skills into architecture
- Merged security skills into security-auditor and security-coder
- Merged testing skills into testing-master and testing-patterns
- Merged pentesting skills into pentesting
- Renamed website-creator to thai-frontend-dev
- Replaced skill-creator with github version
- Removed Chutes references (use MiniMax API instead)
- Added install-openclaw-skills.sh for cross-platform installation
- Updated .env.example with MiniMax API credentials

.env.example

@@ -11,11 +11,12 @@
 # ===========================================
 
 # ===========================================
-# 🎨 IMAGE GENERATION & EDITING
-# Required for: Image features (Tests 4.1, 4.3)
-# Get token from: https://chutes.ai/
+# 🎙️ MINIMAX API - For frontend-dev skill
+# Required for: TTS, Music, Video generation
+# Get token from: https://www.minimax.io/
 # ===========================================
-CHUTES_API_TOKEN=
+MINIMAX_API_KEY=
+MINIMAX_API_BASE=https://api.minimax.io/v1
 
 # ===========================================
 # 📊 GOOGLE ANALYTICS 4 (GA4) - Optional
@@ -107,7 +108,7 @@ SHODH_USER_ID=default
 # ✅ Context management (Group 3)
 #
 # REQUIRED FOR FULL FEATURES:
-# 🎨 Images: CHUTES_API_TOKEN
+# 🎙️ MiniMax: MINIMAX_API_KEY (for TTS, Music, Video, Image)
 # 📈 Umami: UMAMI_URL, UMAMI_USERNAME, UMAMI_PASSWORD
 # 🚀 Git: GIT_* (only if using git push)
 #
@@ -116,7 +117,7 @@ SHODH_USER_ID=default
 #
 # TESTING WORKFLOW:
 # 1. Start with core features (no credentials)
-# 2. Add CHUTES_API_TOKEN for image tests
+# 2. Add MINIMAX_API_KEY for TTS/Music/Video/Image
 # 3. Add UMAMI_* for auto-tracking setup
 # 4. Add GIT_* for git push (if using Gitea)
 #