fix: create OpenClaw config if not exists and simplify install summary

- Create ~/.openclaw/config.json if it doesn't exist
- Automatically add plugin path to config
- Simplify post-install steps (remove redundant 'add to profile' step)

install.mjs

@@ -460,10 +460,14 @@ async function configure(env) {
   log('\n  Updating OpenClaw plugin configuration...', 'blue');
   const openclawConfigPath = join(installDir, 'config.json');
   
-  if (existsSync(openclawConfigPath)) {
   try {
+    let config = {};
+    
+    // Load existing config if present
+    if (existsSync(openclawConfigPath)) {
       const configContent = readFileSync(openclawConfigPath, 'utf8');
-      const config = JSON.parse(configContent);
+      config = JSON.parse(configContent);
+    }
     
     // Ensure plugins.load.paths exists
     if (!config.plugins) {
@@ -487,9 +491,6 @@ async function configure(env) {
     }
   } catch (err) {
     logWarning(`Failed to update OpenClaw config: ${err.message}`);
-    }
-  } else {
-    logWarning(`OpenClaw config not found at ${openclawConfigPath}`);
     log('  Please manually add the following to your OpenClaw config:', 'yellow');
     log(`    plugins.load.paths: ["${join(installDir, 'skills', 'paddedcell')}"]`, 'cyan');
   }
@@ -585,16 +586,13 @@ function printSummary(env) {
     
     log('Next steps:', 'blue');
     console.log('');
-    log('1. Add to your shell profile (~/.bashrc, ~/.zshrc):', 'yellow');
+    log('1. Reload your shell or run:', 'yellow');
     log(`   source ${join(installDir, 'paddedcell.env')}`, 'cyan');
     console.log('');
-    log('2. Reload your shell or run:', 'yellow');
-    log(`   source ${join(installDir, 'paddedcell.env')}`, 'cyan');
-    console.log('');
-    log('3. Initialize pass_mgr (required before first use):', 'yellow');
+    log('2. Initialize pass_mgr (required before first use):', 'yellow');
     log('   pass_mgr admin init', 'cyan');
     console.log('');
-    log('4. Test pass_mgr:', 'yellow');
+    log('3. Test pass_mgr:', 'yellow');
     log('   pass_mgr set test_key mypass # Set a test password', 'cyan');
     log('   pass_mgr get test_key        # Retrieve password', 'cyan');
   }