Use @z_ai/coding-helper wizard for easier GLM setup

MAJOR IMPROVEMENT to GLM setup workflow:

Before: Manual configuration with multiple steps
- Create settings.json manually
- Copy/paste complex JSON
- Edit files manually
- Easy to make mistakes

After: Interactive wizard ( MUCH simpler!)
- npm install -g @z_ai/coding-helper
- npx @z_ai/coding-helper init
- Wizard asks for API key
- Everything configured automatically
- Verified working

Benefits:
- ✅ Fewer steps (3 vs 6+)
- ✅ Less error-prone
- ✅ Interactive and guided
- ✅ Official Z.AI tool
- ✅ Automatic verification

Updates:
- MASTER-PROMPT.md: Promote wizard method as "EASIEST"
- README.md: Add wizard at top as primary method
- Blog post: Update warning with wizard commands
- Keep manual method as alternative

This makes GLM setup as simple as:
  npm install -g @z_ai/coding-helper
  npx @z_ai/coding-helper init
  claude

README.md

@@ -33,9 +33,24 @@ Choose the installation method that works best for you:
 
 **If using the GLM Coding Plan (90% cheaper), you MUST configure GLM FIRST before using Claude Code!**
 
-The Master Prompt file includes complete GLM setup instructions at the top. Read the "BEFORE YOU BEGIN" section first.
+**🎯 EASIEST METHOD - Use Z.AI Coding Helper Wizard:**
 
-**Quick GLM Setup:**
+```bash
+# Install coding helper and run setup wizard
+npm install -g @z_ai/coding-helper
+npx @z_ai/coding-helper init
+
+# The wizard will:
+# ✅ Ask for your Z.AI API key
+# ✅ Configure Claude Code for GLM automatically
+# ✅ Set up model mappings (glm-4.5-air, glm-4.7)
+# ✅ Verify everything works
+
+# Start Claude Code with GLM
+claude
+```
+
+**Manual Configuration (if you prefer):**
 ```bash
 # Get API key: https://z.ai/
 mkdir -p ~/.claude
@@ -52,7 +67,7 @@ cat > ~/.claude/settings.json << 'EOF'
 }
 EOF
 npm install -g @anthropic-ai/claude-code
-claude  # Start Claude Code with GLM
+claude
 ```
 
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