v2.0.3: Emphasize global installation in docs

INSTALL.md

@@ -6,26 +6,32 @@
 
 ## ⚡ Quick Start (5 Minutes)
 
-### Step 1: Install QwenClaw
+### Step 1: Install QwenClaw Globally
 
 ```bash
-# Option A: Install globally (recommended)
+# Recommended: Install globally with npm
 npm install -g qwenclaw
 
-# Option B: Use from source
+# Or use bun
-git clone https://github.rommark.dev/admin/QwenClaw-with-Auth.git
+bun install -g qwenclaw
-cd QwenClaw-with-Auth
-npm install
-npm link
 ```
 
-### Step 2: Run Setup
+### Step 2: Verify Installation
+
+```bash
+# Check version
+qwenclaw --version
+
+# Should show: qwenclaw v2.0.2
+```
+
+### Step 3: Run Setup
 
 ```bash
 qwenclaw setup
 ```
 
-### Step 3: Start Using
+### Step 4: Start Using
 
 **In Terminal:**
 ```bash
@@ -63,17 +69,34 @@ node --version  # Should be v22.x or higher
 
 ## 🚀 Installation Methods
 
-### Method 1: npm (Recommended)
+### Method 1: Global Install with npm (Recommended)
 
 ```bash
-# Install globally
+# Install globally - makes qwenclaw command available system-wide
 npm install -g qwenclaw
 
 # Verify installation
 qwenclaw --version
+qwenclaw help
 ```
 
-### Method 2: From Source
+**This is the recommended method because:**
+- ✅ `qwenclaw` command available from anywhere in terminal
+- ✅ Works with Qwen Code CLI slash commands
+- ✅ No need to navigate to project directory
+- ✅ Automatic PATH configuration
+
+### Method 2: Global Install with bun
+
+```bash
+# Install globally with bun
+bun install -g qwenclaw
+
+# Verify
+qwenclaw --version
+```
+
+### Method 3: From Source (Development)
 
 ```bash
 # Clone repository
@@ -83,26 +106,29 @@ cd QwenClaw-with-Auth
 # Install dependencies
 npm install
 
-# Link globally
+# Link globally (makes it available system-wide)
 npm link
 
 # Verify
 qwenclaw --version
 ```
 
-### Method 3: Development Mode
+### Method 4: Local Install (Not Recommended)
 
 ```bash
-# Clone and install
+# Clone and install locally
 git clone https://github.rommark.dev/admin/QwenClaw-with-Auth.git
 cd QwenClaw-with-Auth
 npm install
 
-# Run without installing
+# Run with npm scripts (must be in project directory)
 npm run start
 npm run status
+npm run help
 ```
 
+**Note:** This method requires you to be in the project directory. For best experience, use Method 1 (global install).
+
 ---
 
 ## ⚙️ Configuration
@@ -249,16 +275,50 @@ Or in Qwen Code:
 
 ## 🔧 Troubleshooting
 
-### Issue: "command not found: qwenclaw"
+### Issue: "command not found: qwenclaw" or "qwenclaw is not recognized"
+
+**Cause:** QwenClaw not installed globally or not in PATH
 
 **Solution:**
+
 ```bash
-# Reinstall globally
+# Install globally
 npm install -g qwenclaw
 
-# Or add npm global bin to PATH
+# If still not found, add npm global bin to PATH
-# Windows: %APPDATA%\npm
+
-# macOS/Linux: ~/.npm-global/bin
+# Windows:
+# Add to System Environment Variables PATH:
+# %APPDATA%\npm
+
+# macOS/Linux:
+export PATH="$HOME/.npm-global/bin:$PATH"
+# Add above line to ~/.bashrc or ~/.zshrc
+
+# Verify installation
+qwenclaw --version
+```
+
+**Alternative (Windows PowerShell):**
+```powershell
+# Run as Administrator
+npm install -g qwenclaw
+
+# Add to PATH
+[Environment]::SetEnvironmentVariable("Path", $env:Path + ";$env:APPDATA\npm", [EnvironmentVariableTarget]::Machine)
+```
+
+### Issue: Permission denied when installing globally
+
+**Solution:**
+
+```bash
+# macOS/Linux - use sudo
+sudo npm install -g qwenclaw
+
+# Or configure npm to use user directory
+npm config set prefix '~/.npm-global'
+export PATH=~/.npm-global/bin:$PATH
 ```
 
 ### Issue: "/qwenclaw:status unknown command"
@@ -270,6 +330,9 @@ ls -la ~/.qwen/commands/qwenclaw/
 
 # Should contain: start.md, status.md, send.md, skills.md, help.md
 
+# If missing, re-run setup
+qwenclaw setup
+
 # Restart Qwen Code
 exit
 qwen