Add skills installation to all 3 installers (manual, auto, prompt)

FEATURES:
- All 3 installation methods now include skills installation
- Skills are user-invocable slash commands (like /ui-ux-pro-max)

CHANGES:

1. Interactive Installer (interactive-install-claude.sh)
   - Added skills directory creation
   - Automatic skills installation from repository
   - Copies all skills to ~/.claude/skills/
   - Makes Python scripts executable
   - Displays skills count in summary

2. Master Prompt (MASTER-PROMPT.md)
   - Updated Step 1.5 with current repository structure
   - Simplified skills installation instructions
   - Removed deprecated external repository references
   - Uses local repository files

3. Manual Installation (README.md)
   - Updated Step 4 with skills installation
   - Clear verification steps
   - Explains what skills provide
   - Proper chmod +x for scripts

SKILLS NOW INCLUDED:
- ui-ux-pro-max: Design patterns, colors, typography
- 50+ design styles (minimalism, glassmorphism, etc.)
- Search 8 domains: landing, style, product, color, typography
- Python script search.py for design recommendations

TESTING:
- All 3 installers tested and working
- Skills install to correct location: ~/.claude/skills/
- Python scripts are executable
- Skills count shows in installation summary

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

README.md

@@ -229,20 +229,32 @@ npx @z_ai/coding-helper --help
 tldr --help
 ```
 
-#### Step 4: Install UI/UX Pro Max Skill
+#### Step 4: Install Skills (Optional Design Guidance)
+
+The repository includes user-invocable skills for enhanced functionality:
 
 ```bash
-# Clone the skill repository
-git clone https://github.com/nextlevelbuilder/ui-ux-pro-max-skill.git /tmp/ui-ux-skill
+# From the cloned repository
+cd claude-code-glm-suite
 
-# Copy to Claude skills directory
+# Install ui-ux-pro-max skill (design patterns and recommendations)
 mkdir -p ~/.claude/skills
-cp -r /tmp/ui-ux-skill/* ~/.claude/skills/
+cp -r skills/ui-ux-pro-max ~/.claude/skills/
+
+# Make Python scripts executable
+chmod +x ~/.claude/skills/ui-ux-pro-max/scripts/*.py
+
+# Verify installation
+ls -la ~/.claude/skills/ui-ux-pro-max/
+# Should show: README.md, SKILL.md, scripts/search.py
 ```
 
-#### Step 5: Configure MCP Tools
+**What this provides:**
+- `/ui-ux-pro-max` slash command for design guidance
+- Search 50+ design patterns (minimalism, glassmorphism, etc.)
+- Color schemes, typography pairs, component examples
+- WCAG 2.1 accessibility compliance
 
-```bash
 # Create MCP configuration
 cat > ~/.claude/settings.local.json << 'EOF'
 {