Remove debug console.log statements (v1.7.4 cleanup)

Cleaned up debug logging from file opening investigation:
- Removed console.log from command line arg processing
- Removed console.log from renderer-ready handler
- Removed console.log from openFileFromPath function
- Removed console.log from file-opened IPC handler
The double-click file opening fix is confirmed working.
🤖 Generated with [Claude Code](https://claude.com/claude-code)

src/main.js

@@ -1584,15 +1584,11 @@ function openFileFromPath(filePath) {
     currentFile = filePath;
     const content = fs.readFileSync(filePath, 'utf-8');
     if (mainWindow && mainWindow.webContents && rendererReady) {
-      console.log('Opening file (renderer ready):', filePath);
       mainWindow.webContents.send('file-opened', { path: filePath, content });
     } else {
-      console.log('Renderer not ready, storing file:', filePath);
       // Store file to open after renderer is ready
       app.pendingFile = filePath;
     }
-  } else {
-    console.error('File does not exist:', filePath);
   }
 }