Fehler melden mit Screenshot und Markierung, Sammlung für Bearbeiter

Käfer-Button unten rechts: nimmt den sichtbaren Bildschirm mit html2canvas
(selbst gehostet) auf, Vorschau mit roten Rechtecken, Beschreibung, Name
optional, Senden ohne Anmeldung. Aus offenen Dialogen heraus wird der
Dialog selbst aufgenommen. Bearbeiter sehen die Meldungen unter „Fehler"
mit Zähler, kopieren einen fertigen Claude-Prompt und den Screenshot.

Serverseitig: Pfade nur in exakter Schreibweise, /api standardmäßig nur
für Bearbeiter mit ausdrücklicher Freigabeliste, Bremse zählt jeden
Versuch vor dem Lesen großer Bodies, X-Forwarded-For nur von vertrauten
Proxys, Nutzertext im Prompt eingezäunt. HTTP-Tests für die Sperren.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

public/vendor/html2canvas.min.js

@@ -0,0 +1,20 @@
+/*!
+ * html2canvas 1.4.1 <https://html2canvas.hertzen.com>
+ * Copyright (c) 2022 Niklas von Hertzen <https://hertzen.com>
+ * Released under MIT License
+ */
+!function(A,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define(e):(A="undefined"!=typeof globalThis?globalThis:A||self).html2canvas=e()}(this,function(){"use strict";
+/*! *****************************************************************************
+    Copyright (c) Microsoft Corporation.
+
+    Permission to use, copy, modify, and/or distribute this software for any
+    purpose with or without fee is hereby granted.
+
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+    REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+    AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+    INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+    LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+    OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+    PERFORMANCE OF THIS SOFTWARE.
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