Improve app accessibility affordances

static/index.html

@@ -264,8 +264,8 @@
 
 </div><!-- /app-shell -->
 
-<div id="toast"></div>
+<div id="toast" aria-live="polite" aria-atomic="true"></div>
-<div id="status-bar">Loading…</div>
+<div id="status-bar" role="status" aria-live="polite" aria-atomic="true">Loading…</div>
 
 <!-- WaveSurfer — self-hosted, loaded synchronously (voice waveform requires it) -->
 <script src="/static/vendor/wavesurfer.min.js"></script>

static/js/utils.js

@@ -139,6 +139,79 @@ async function clientAutoTrimBounds(fid) {
   };
 }
 
+
+// ── Accessibility helpers ────────────────────────────────────────────────
+function _a11yText(el) {
+  return String(el?.textContent || '').replace(/\s+/g, ' ').trim();
+}
+
+function _a11yLabel(el) {
+  return el?.getAttribute('aria-label') || el?.getAttribute('title') || _a11yText(el) || '';
+}
+
+function enhanceAccessibility(root = document) {
+  const scope = root && root.querySelectorAll ? root : document;
+  const statusBar = $('status-bar');
+  if (statusBar) {
+    statusBar.setAttribute('role', 'status');
+    statusBar.setAttribute('aria-live', 'polite');
+    statusBar.setAttribute('aria-atomic', 'true');
+  }
+  const toastEl = $('toast');
+  if (toastEl) {
+    toastEl.setAttribute('aria-live', 'polite');
+    toastEl.setAttribute('aria-atomic', 'true');
+  }
+
+  scope.querySelectorAll('.nav-item, .nav-tree-item, .tab, [onclick]').forEach(el => {
+    if (/^(A|BUTTON|INPUT|SELECT|TEXTAREA|SUMMARY)$/i.test(el.tagName)) return;
+    if (!el.hasAttribute('role')) el.setAttribute('role', 'button');
+    if (!el.hasAttribute('tabindex')) el.setAttribute('tabindex', '0');
+    const label = _a11yLabel(el);
+    if (label && !el.getAttribute('aria-label')) el.setAttribute('aria-label', label);
+    if (label && !el.getAttribute('title')) el.setAttribute('title', label);
+  });
+
+  scope.querySelectorAll('button, [role=button], a, input, select, textarea').forEach(el => {
+    const label = _a11yLabel(el);
+    if (label && !el.getAttribute('title') && el.matches('button, [role=button]')) el.setAttribute('title', label);
+    if (label && !el.getAttribute('aria-label') && !_a11yText(el) && el.matches('button, [role=button]')) el.setAttribute('aria-label', label);
+  });
+
+  scope.querySelectorAll('button .mdi, [role=button] .mdi, .nav-icon .mdi').forEach(icon => {
+    icon.setAttribute('aria-hidden', 'true');
+  });
+
+  document.querySelectorAll('.nav-item, .nav-tree-item').forEach(el => {
+    const active = el.classList.contains('active') || el.classList.contains('is-active');
+    if (active && el.getAttribute('aria-current') !== 'page') el.setAttribute('aria-current', 'page');
+    else if (!active && el.hasAttribute('aria-current')) el.removeAttribute('aria-current');
+  });
+}
+
+function initAccessibilityEnhancements() {
+  if (window.__ttsvcA11yReady) { enhanceAccessibility(document); return; }
+  window.__ttsvcA11yReady = true;
+  enhanceAccessibility(document);
+  document.addEventListener('keydown', (e) => {
+    if (e.key !== 'Enter' && e.key !== ' ') return;
+    const el = e.target?.closest?.('[role=button]');
+    if (!el || /^(BUTTON|A|INPUT|SELECT|TEXTAREA)$/i.test(el.tagName)) return;
+    e.preventDefault();
+    el.click();
+  });
+  const obs = new MutationObserver((mutations) => {
+    for (const m of mutations) {
+      if (m.type === 'childList') {
+        m.addedNodes.forEach(n => { if (n.nodeType === 1) enhanceAccessibility(n); });
+      } else if (m.type === 'attributes') {
+        enhanceAccessibility(document);
+      }
+    }
+  });
+  obs.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['class'] });
+}
+
 // ── Light / dark theme ────────────────────────────────────────────────────
 
 function applyTheme(t) {

static/loader.js

@@ -149,6 +149,7 @@
   // ── i18n: add the language picker and translate the (now fully-rendered) UI ──
   if (window.initLangPicker) window.initLangPicker();
   if (window.applyI18n) window.applyI18n(document);
+  if (window.initAccessibilityEnhancements) window.initAccessibilityEnhancements();
 
   // E — post-init modules load in background AFTER the UI is already visible.
   // Engines, AI backends, generation, and conversation sections load while