fix: add radix parameter to parseInt() calls (#862)

Add explicit radix=10 to parseInt() calls and NaN validation to prevent
unexpected hex parsing and invalid config values.

Changes:
- Line 52: Add radix and NaN check in input validation
- Line 189-192: Add radix and NaN fallback for config parsing

Fixes potential issues:
- Hex input (0x10) now rejected instead of parsed as 16
- Invalid strings return default value instead of NaN→null

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: Brian <bmadcode@gmail.com>

tools/cli/installers/lib/ide/github-copilot.js

@@ -50,7 +50,8 @@ class GitHubCopilotSetup extends BaseIdeSetup {
           message: 'Maximum requests per session (1-50)?',
           default: '15',
           validate: (input) => {
-            const num = parseInt(input);
+            const num = parseInt(input, 10);
+            if (isNaN(num)) return 'Enter a valid number 1-50';
             return (num >= 1 && num <= 50) || 'Enter 1-50';
           },
         },
@@ -187,9 +188,10 @@ class GitHubCopilotSetup extends BaseIdeSetup {
       // Manual configuration - use pre-collected settings
       const manual = options.manualSettings || {};
 
+      const maxRequests = parseInt(manual.maxRequests || '15', 10);
       bmadSettings = {
         'chat.agent.enabled': true,
-        'chat.agent.maxRequests': parseInt(manual.maxRequests || 15),
+        'chat.agent.maxRequests': isNaN(maxRequests) ? 15 : maxRequests,
         'github.copilot.chat.agent.runTasks': manual.runTasks === undefined ? true : manual.runTasks,
         'chat.mcp.discovery.enabled': manual.mcpDiscovery === undefined ? true : manual.mcpDiscovery,
         'github.copilot.chat.agent.autoFix': manual.autoFix === undefined ? true : manual.autoFix,