fix: Bug - Login screen shows up on unreachable signal servers

Skip authorize login navigation when a signal server endpoint is offline or
unreachable; gate connection and credential flows on online status only.

Co-authored-by: Cursor <cursoragent@cursor.com>

toju-app/src/app/domains/authentication/application/services/signal-server-authorize.service.ts

@@ -5,6 +5,8 @@ import { firstValueFrom } from 'rxjs';
 import { selectCurrentUser } from '../../../../store/users/users.selectors';
 import { ServerDirectoryFacade } from '../../../server-directory';
 import { AUTH_MODE_AUTHORIZE, buildLoginReturnQueryParams } from '../../domain/logic/auth-navigation.rules';
+import { isEndpointOnlineForConnection } from '../../../server-directory/domain/logic/server-endpoint-connectivity.rules';
+import { shouldNavigateToAuthorizeSignalServer } from '../../domain/logic/signal-server-authorize.rules';
 import { SignalServerAuthService } from './signal-server-auth.service';
 
 @Injectable({ providedIn: 'root' })
@@ -25,25 +27,43 @@ export class SignalServerAuthorizeService {
       return false;
     }
 
-    const result = await this.signalServerAuth.ensureProvisioned(serverUrl, currentUser);
+    let result;
+
+    try {
+      result = await this.signalServerAuth.ensureProvisioned(serverUrl, currentUser);
+    } catch {
+      return false;
+    }
 
     if (result.kind === 'existing' || result.kind === 'provisioned') {
       return true;
     }
 
-    if (result.kind === 'collision') {
-      await this.navigateToAuthorize(serverUrl, this.router.url);
-      return false;
-    }
+    const endpointStatus = await this.resolveEndpointStatusForAuthorize(serverUrl);
 
-    if (result.kind === 'skipped' && result.reason === 'no-provision-secret') {
+    if (shouldNavigateToAuthorizeSignalServer(endpointStatus, result)) {
       await this.navigateToAuthorize(serverUrl, this.router.url);
-      return false;
     }
 
     return false;
   }
 
+  private async resolveEndpointStatusForAuthorize(serverUrl: string) {
+    const endpoint = this.serverDirectory.findServerByUrl(serverUrl);
+
+    if (!endpoint) {
+      return null;
+    }
+
+    if (isEndpointOnlineForConnection(endpoint.status) || endpoint.status === 'offline' || endpoint.status === 'incompatible') {
+      return endpoint.status;
+    }
+
+    await this.serverDirectory.testServer(endpoint.id);
+
+    return this.serverDirectory.servers().find((candidate) => candidate.id === endpoint.id)?.status ?? endpoint.status;
+  }
+
   async navigateToAuthorize(serverUrl: string, returnUrl: string): Promise<void> {
     const endpoint = this.serverDirectory.ensureServerEndpoint({
       name: this.buildEndpointName(serverUrl),