Dev console: money, items, upgrades, free build, speed (t66)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/ui/devconsole.js

@@ -0,0 +1,42 @@
+// Bottom panel; command dispatch and state live in sim/devconsole.js.
+function closeDevConsole() {
+  $('dev-console').hidden = true;
+  $('dev-input').blur();
+}
+function showDevConsole() {
+  $('dev-console').hidden = false;
+  if (!$('dev-output').children.length) devPrint(['Type help to list commands. Backtick or Escape closes this panel.']);
+  $('dev-input').focus();
+}
+function toggleDevConsole() {
+  if (!GAME.running || GAME.loading) return;
+  if (!$('dev-console').hidden) { closeDevConsole(); return; }
+  if (devWorld) { showDevConsole(); return; }
+  dialog('Enable dev console?', '<p>This save will be permanently marked as a dev-console world. If achievements are added later, they will not unlock in this world.</p><p>You can change money, materials, upgrades and game speed. These commands are logged but cannot be undone.</p>', [
+    { label: 'Cancel' },
+    { label: 'Enable dev console', cls: 'primary', fn: () => {
+      enableDevConsole(); closeModal('m-dialog'); showDevConsole(); saveWorld('main'); return true;
+    } },
+  ]);
+}
+function devPrint(lines) {
+  const log = $('dev-output');
+  for (const line of lines) { const row = document.createElement('div'); row.textContent = line; log.appendChild(row); }
+  while (log.children.length > 400) log.firstChild.remove();
+  log.scrollTop = log.scrollHeight;
+}
+function runDevCommand(text) {
+  devPrint(devCommand(text, GAME.aim));
+  hudDirty = true; lastBagKey = ''; lastBuildKey = '';
+  renderWallet();
+  if (!$('m-notebook').hidden) renderNotebook();
+}
+$('dev-close').onclick = closeDevConsole;
+$('dev-input').onfocus = () => { keys.clear(); GAME.lmb = GAME.rmb = false; GAME.drag = null; GAME.replace = false; };
+$('dev-input').onkeydown = e => {
+  if (e.key === 'Escape' || e.key === '`') { e.preventDefault(); e.stopPropagation(); closeDevConsole(); }
+};
+$('dev-form').onsubmit = e => {
+  e.preventDefault();
+  const input = $('dev-input'); runDevCommand(input.value); input.value = ''; input.focus();
+};