fix(#25): rename tasks.js to tasks.cjs for CommonJS compatibility

packages/skills/tasks/scripts/tasks.cjs

@@ -295,7 +295,7 @@ function showHelp() {
 Mosaic Tasks CLI
 
 Usage:
-  node tasks.js <command> [options]
+  node tasks.cjs <command> [options]
 
 Commands:
   create          Create a new task
@@ -346,22 +346,22 @@ Environment Variables:
 
 Examples:
   # Create a task
-  node tasks.js create --title "Review PR #123" --priority HIGH
+  node tasks.cjs create --title "Review PR #123" --priority HIGH
 
   # List high priority tasks
-  node tasks.js list --priority HIGH
+  node tasks.cjs list --priority HIGH
 
   # List overdue tasks
-  node tasks.js list --overdue
+  node tasks.cjs list --overdue
 
   # Get task details
-  node tasks.js get abc-123-def-456
+  node tasks.cjs get abc-123-def-456
 
   # Mark task as completed
-  node tasks.js update abc-123-def-456 --status COMPLETED
+  node tasks.cjs update abc-123-def-456 --status COMPLETED
 
   # Delete a task
-  node tasks.js delete abc-123-def-456
+  node tasks.cjs delete abc-123-def-456
 `);
 }
 
@@ -401,7 +401,7 @@ async function main() {
       
       default:
         console.error(`Unknown command: ${command}`);
-        console.error('Run "node tasks.js help" for usage information');
+        console.error('Run "node tasks.cjs help" for usage information');
         process.exit(1);
     }
   } catch (error) {