fix: resolve CI/CD issues - all tests pass locally

src/mcp_server_cli/templates/calculator.yaml

@@ -1,25 +1,22 @@
 name: calculator
-description: Perform basic mathematical calculations
+description: Perform basic arithmetic operations
 
 input_schema:
   type: object
   properties:
     operation:
       type: string
-      description: Operation to perform
+      description: Operation to perform (add, subtract, multiply, divide)
       enum: [add, subtract, multiply, divide]
       required: true
     a:
       type: number
-      description: First operand
+      description: First number
       required: true
     b:
       type: number
-      description: Second operand
+      description: Second number
       required: true
-  required:
-    - operation
-    - b
 
 annotations:
   read_only_hint: true