feat(offline): bundle local assets and add safe UI error recovery (U16)

src/Duempelkas.Desktop/Program.cs

@@ -120,7 +120,7 @@ class Program
 
         AppDomain.CurrentDomain.UnhandledException += (sender, error) =>
         {
-            app.MainWindow.ShowMessage("Schwerwiegender Fehler", error.ExceptionObject.ToString());
+            app.MainWindow.ShowMessage("Dümpelkas konnte nicht fortgesetzt werden", "Bitte das Programm schließen und neu öffnen. Eine Speicherung ist nicht bestätigt; vor erneutem Buchen die Liste prüfen. Fehlerart: " + error.ExceptionObject.GetType().Name);
         };
 
         app.Run();

src/Duempelkas.Desktop/wwwroot/css/app.css

@@ -702,3 +702,9 @@ button,summary { touch-action: manipulation; }
 .entry-filters > div { flex: 1 1 14rem; min-width: 0; }
 .entry-filters input,.entry-filters select { width: 100%; box-sizing: border-box; padding: .5rem; color: var(--color-text); background: var(--color-surface); border: 1px solid var(--color-border); }
 .search-summary { padding: .6rem; border-left: 3px solid var(--color-accent); }
+
+.text-danger { color: var(--color-expense) !important; }
+.text-success { color: var(--color-income) !important; }
+
+.entry-deleted td { text-decoration: none; }
+.entry-deleted .entry-title, .entry-deleted td[data-label="Betrag"] { text-decoration: line-through; }

src/Duempelkas.Desktop/wwwroot/index.html

@@ -109,21 +109,17 @@
         })();
     </script>
     <title>Dümpelkas – Kassenbuch</title>
-    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" 
-          rel="stylesheet" 
-          integrity="sha384-QWTKZyjpPEjISv5WaRU9OFeRpok6YcnS/1nDaGm7AT/+aIi56blBBJoSpcBx5Hn" 
-          crossorigin="anonymous" />
-    <link href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.min.css"
-          rel="stylesheet" />
+    <link href="vendor/bootstrap/bootstrap.min.css" rel="stylesheet" />
+    <link href="vendor/bootstrap-icons/bootstrap-icons.min.css" rel="stylesheet" />
     <link href="css/app.css" rel="stylesheet" />
 </head>
 <body>
     <app>Laden...</app>
 
     <div id="blazor-error-ui">
-        Ein unbehandelter Fehler ist aufgetreten.
-        <a href="" class="reload">Neu laden</a>
-        <a class="dismiss">×</a>
+        Die Ansicht konnte wegen eines unerwarteten Fehlers nicht fortgesetzt werden. Eine Speicherung ist nicht bestätigt; bitte vor erneutem Buchen die Liste prüfen.
+        <a href="" class="reload">Ansicht neu laden</a>
+        <button type="button" class="dismiss" aria-label="Fehlerhinweis schließen">×</button>
     </div>
 
     <script src="js/app.js"></script>

src/Duempelkas.Desktop/wwwroot/vendor/README.md

@@ -0,0 +1,8 @@
+Bootstrap 5.3.3 and Bootstrap Icons 1.11.3, MIT-licensed. Vendored from the corresponding npm releases via cdn.jsdelivr.net; original licenses are in each directory. Font query hashes were removed for local WebView paths.
+
+bootstrap\bootstrap.min.css SHA256 3c8f27e6009ccfd710a905e6dcf12d0ee3c6f2ac7da05b0572d3e0d12e736fc8
+bootstrap\LICENSE SHA256 8c14611ae41ac6fd543c13349f22188eb12c69b3e59105c5eca3925a8e4eca3e
+bootstrap-icons\bootstrap-icons.min.css SHA256 ea5f11e3455e7ec8cdfec5a46a6f0905308979d60cb2777c9246bc04cd37cff7
+bootstrap-icons\LICENSE SHA256 0fb3e11bd57e896c5a512afd64864d28a37de45d19835016c87ca1ad19ead969
+bootstrap-icons\fonts\bootstrap-icons.woff SHA256 bb1de989b83970f6f4e54de1cd974c5cba55b73582da5e1b225a6d0edf029483
+bootstrap-icons\fonts\bootstrap-icons.woff2 SHA256 476adf42b40325098fcfa8b36ab3e769186bb4f6ce6a249753e2e1a9c22bf99e

src/Duempelkas.Desktop/wwwroot/vendor/bootstrap-icons/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2019-2024 The Bootstrap Authors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

src/Duempelkas.Desktop/wwwroot/vendor/bootstrap/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2011-2024 The Bootstrap Authors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.