fix: C3 debug logs, H1-H5 image cache, temp files, controller leak, validat...

Matthias Nott

2026-03-25 d6cf9469aa0462d1b8313cc85907176eee1214a2

 lib/widgets/session_drawer.dart
..
..
@@ -233,7 +233,6 @@
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           ),
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         ],
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       ),
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-    );
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-    // Dispose controller when dialog is dismissed
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+    ).then((_) => controller.dispose());
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   }
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 }