Increase VectorEngine timeouts and add image UI

Add VectorEngine image generation config and raise request timeouts (env + scripts) from 180000 to 1000000ms. Introduce a reusable CreativeImageInputPanel component with tests and wire up mobile keyboard-focus helpers; update generation views and related tests (CustomWorldGenerationView, BarkBattle editor, Match3D, Puzzle flows). Improve API error handling / VectorEngine request guidance (packages/shared http.ts and docs), and apply multiple backend/frontend fixes for puzzle/match3d/prompt handling. Also include extensive docs and decision-log updates describing UI/UX decisions and verification steps.

src/main.tsx

@@ -5,6 +5,7 @@ import './index.css';
 import {StrictMode, Suspense} from 'react';
 import {createRoot} from 'react-dom/client';
 
+import {stabilizeMobileViewportKeyboardFocus} from './mobileViewportKeyboardFocus';
 import {lockMobileViewportZoom} from './mobileViewportZoomLock';
 import {resolveAppRoute} from './routing/appRoutes';
 import {RouteImageReadyGate} from './routing/RouteImageReadyGate';
@@ -29,6 +30,7 @@ const root = window.__tavernRealmsRoot__ ??= createRoot(rootElement);
 const RouteComponent = route.Component;
 
 lockMobileViewportZoom();
+stabilizeMobileViewportKeyboardFocus();
 
 root.render(
   <StrictMode>