feat: Expose Jitsi iFrame API instances on window for console access

Adds window.jitsiApi (shortcut to last registered tab) and window.jitsiApis
(map of all active tabs by ID) so developers can control participants directly
from the browser console without needing the UI.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: damencho

src/contexts/TabsContext.tsx

@@ -244,6 +244,10 @@ export const TabsProvider: React.FC<TabsProviderProps> = ({ children }) => {
             newApis.set(tabId, api);
             return newApis;
         });
+        // Expose APIs on window for browser console access
+        (window as any).jitsiApis = (window as any).jitsiApis || {};
+        (window as any).jitsiApis[tabId] = api;
+        (window as any).jitsiApi = api; // always points to the most recently registered tab
     }, []);
 
     const unregisterTabApi = useCallback((tabId: string) => {
@@ -252,6 +256,12 @@ export const TabsProvider: React.FC<TabsProviderProps> = ({ children }) => {
             newApis.delete(tabId);
             return newApis;
         });
+        if ((window as any).jitsiApis) {
+            delete (window as any).jitsiApis[tabId];
+            // Update jitsiApi shortcut to another active tab if available
+            const remaining = Object.values((window as any).jitsiApis);
+            (window as any).jitsiApi = remaining.length > 0 ? remaining[remaining.length - 1] : null;
+        }
     }, []);
 
     const getTabApi = useCallback((tabId: string) => {