v0.3.0 - Polish: accessibility, security, performance, RTL, French translation

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

src/js/dark-mode.js

@@ -61,6 +61,7 @@
                 var newTheme = currentTheme === 'dark' ? 'light' : 'dark';
                 localStorage.setItem(STORAGE_KEY, newTheme);
                 setTheme(newTheme);
+                announceTheme(newTheme);
             });
         });
     });
@@ -71,4 +72,23 @@
             setTheme(e.matches ? 'dark' : 'light');
         }
     });
+
+    /**
+     * Announce theme change to screen readers via a live region.
+     *
+     * @param {string} theme - 'dark' or 'light'
+     */
+    function announceTheme(theme) {
+        var msg = theme === 'dark' ? 'Dark mode enabled' : 'Light mode enabled';
+        var el = document.getElementById('wp-bootstrap-theme-status');
+        if (!el) {
+            el = document.createElement('div');
+            el.id = 'wp-bootstrap-theme-status';
+            el.setAttribute('role', 'status');
+            el.setAttribute('aria-live', 'polite');
+            el.className = 'visually-hidden';
+            document.body.appendChild(el);
+        }
+        el.textContent = msg;
+    }
 })();