feat(clerk): add dedicated nav pages, state restore, and fullscreen ESC fix

- Add ClerkUiStateService with full account state save/restore (no double network call on back navigation)
- Add Photo & Signature, Standing Instructions, Today's Activity as dedicated nav pages
- Remove photo/signature, standing instructions, linked accounts, today's activity panels from main dashboard
- Add ESC key to exit fullscreen; clicking Clerk nav immediately restores fullscreen without re-navigating
- Compact clerk dashboard UI with reduced font sizes and padding throughout
- Add CashierOnlyGuard for route protection

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

src/environments/.env.ts

@@ -9,8 +9,8 @@
 /* tslint:disable */
 export default {
   'mifos_x': {
-    'version': '260608',
-    'hash': 'f6404708'
+    'version': '260609',
+    'hash': 'f7d9259e'
   },
   'allow_switching_backend_instance': true
 };