feat: MCP-Tools ask_user_choice + memory_read/write/list, Text-Marker entfernt

MCP-Server erweitert um ask_user_choice (Long-Poll), memory_read, memory_write
und memory_list Tools. MCP-Config wird jetzt immer generiert (nicht nur bei
Remote-Verbindung). InternalEndpoint um PendingChoices + choice-respond Endpoint
ergänzt. Frontend differenziert CLI-Modus (choice-respond API) vs. API-Modus.
Gesamter :::ASK_USER_CHOICE::: Text-Marker-Mechanismus aus ClaudeCliService,
AnthropicService, markdown.js und stream-ui.js entfernt.

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

wwwroot/js/bubbles.js

@@ -180,7 +180,7 @@ function addWarningBubble(text, streamed = false) {
 
 /**
  * Creates a choice bubble element (for both live stream and history rendering).
- * @param {object} opts - { toolCallId, question, choices, selectedChoice, timestamp, messageId, streamed }
+ * @param {object} opts - { toolCallId, question, choices, selectedChoice, timestamp, messageId, streamed, viaCli }
  */
 function _createChoiceBubble(opts) {
   if (!Array.isArray(opts.choices)) opts.choices = [String(opts.choices)];
@@ -189,6 +189,7 @@ function _createChoiceBubble(opts) {
   const div = document.createElement('div');
   div.className = 'msg choice-bubble' + (answered ? ' choice-answered' : '');
   if (opts.streamed) div.classList.add('streamed');
+  if (opts.viaCli) div.dataset.viaCli = 'true';
   div.dataset.toolCallId = opts.toolCallId || '';
   if (opts.messageId) div.dataset.messageId = opts.messageId;
 
@@ -219,8 +220,8 @@ function _createChoiceBubble(opts) {
 }
 
 // Wird live aus dem SSE-Stream aufgerufen
-function addChoiceBubble(toolCallId, question, choices, streamed = true) {
-  const div = _createChoiceBubble({ toolCallId, question, choices, streamed });
+function addChoiceBubble(toolCallId, question, choices, streamed = true, viaCli = false) {
+  const div = _createChoiceBubble({ toolCallId, question, choices, streamed, viaCli });
   chatEl().appendChild(div);
   scrollDown();
   return div;