CLAUDE.md

@@ -6,11 +6,10 @@ Greenfield project. Implementation is driven by the Vexa AI-SDLC pipeline (Jira
 
 ```
 /
-├── index.html      # Calculator UI (semantic HTML5)
+├── index.html  # Calculator UI (semantic HTML5)
-├── styles.css      # Responsive CSS layout and styling
+├── styles.css  # Responsive CSS layout and styling
-├── calculator.js   # Calculation engine + UI wiring (plain JS, no build step)
+├── README.md   # Project overview
-├── README.md       # Project overview
+└── CLAUDE.md   # This file
-└── CLAUDE.md       # This file
 ```
 
 ## Build Commands
@@ -30,7 +29,6 @@ No dev server or REPL is configured yet. Update this section once the implementa
 - **Domain**: Simple Calculator — arithmetic operations (add, subtract, multiply, divide at minimum).
 - **Stack**: Plain HTML/CSS/JS — no framework or build step.
 - `index.html` contains the full UI structure: operand inputs, operation buttons, calculate/clear buttons, result `<output>`, and an error `<p role="alert">`.
-- `calculator.js` exposes a `calculate(a, b, operation)` function returning `{ result }` or `{ error }`, and an IIFE that wires the engine to the DOM.
 
 ## Code Style
 

calculator.js

@@ -1,62 +0,0 @@
-function calculate(a, b, operation) {
-  switch (operation) {
-    case 'add':      return { result: a + b };
-    case 'subtract': return { result: a - b };
-    case 'multiply': return { result: a * b };
-    case 'divide':
-      if (b === 0) return { error: 'Division by zero is not allowed.' };
-      return { result: a / b };
-    default:
-      return { error: 'Unknown operation: ' + operation };
-  }
-}
-
-(function () {
-  var form = document.getElementById('calculator-form');
-  var operationBtns = document.querySelectorAll('button[name="operation"]');
-  var resultEl = document.getElementById('result');
-  var errorEl = document.getElementById('error-message');
-  var selectedOperation = null;
-
-  operationBtns.forEach(function (btn) {
-    btn.addEventListener('click', function () {
-      operationBtns.forEach(function (b) { b.setAttribute('aria-pressed', 'false'); });
-      btn.setAttribute('aria-pressed', 'true');
-      selectedOperation = btn.value;
-    });
-  });
-
-  form.addEventListener('submit', function (e) {
-    e.preventDefault();
-    resultEl.textContent = '';
-    errorEl.textContent = '';
-
-    var a = parseFloat(document.getElementById('operand1').value);
-    var b = parseFloat(document.getElementById('operand2').value);
-
-    if (isNaN(a) || isNaN(b)) {
-      errorEl.textContent = 'Please enter valid numbers for both operands.';
-      return;
-    }
-
-    if (!selectedOperation) {
-      errorEl.textContent = 'Please select an operation.';
-      return;
-    }
-
-    var outcome = calculate(a, b, selectedOperation);
-
-    if (outcome.error) {
-      errorEl.textContent = outcome.error;
-    } else {
-      resultEl.textContent = outcome.result;
-    }
-  });
-
-  form.addEventListener('reset', function () {
-    resultEl.textContent = '';
-    errorEl.textContent = '';
-    operationBtns.forEach(function (btn) { btn.setAttribute('aria-pressed', 'false'); });
-    selectedOperation = null;
-  });
-}());

index.html

@@ -51,6 +51,5 @@
       <p id="error-message" role="alert" aria-label="Error message"></p>
     </section>
   </main>
-  <script src="calculator.js"></script>
 </body>
 </html>