SimpleChatTC:NSChatMessage:Tool role newFromOld and load fixup

Had forgotten to update these two functions wrt the tool response
related new fields. This is fixed now.

Also show tool-call-id and tool-name to end user as part of chat
message showing.

ALERT on disk structure change old saves wont work esp wrt tool
responses

tools/server/public_simplechat/readme.md

@@ -680,6 +680,25 @@ sliding window based drop off or even before they kick in, this can help in many
 * extract and include the outline of titles (along with calculated numbering) in the text output of pdftext
   * ensure that one doesnt recurse beyond a predefined limit.
 
+* Convert NSChatMessage from typedef to Class and update ChatMessageEx, SimpleChat, MultiChatUI classes to
+  make use of the same.
+  * helpers consolidated
+    * helpers to check if given instance contains reasoning or content or toolcall or tool response related
+      fields/info in them.
+    * helpers to get the corresponding field values
+    * some of these helpers where in ChatMessageEx and beyond before
+  * now the network handshaked fields are declared as undefined by default (instead of empty values).
+    this ensures that json stringify will automatically discard fields whose values are still undefined.
+  * add fields wrt tool response and update full flow to directly work with these fields instead of the
+    xml based serialisation which was previously used for maintaining the different tool response fields
+    within the content field (and inturn extract from there when sending to server).
+    * now a dataset based attribute is used to identify when input element contains user input and when
+      it contains tool call result/response.
+  * this simplifies the flow wrt showing chat message (also make it appear more cleanly) as well as
+    identifying not yet accepted tool result and showing in user query input field and related things.
+  * ALERT: ON-DISK-STORAGE structure of chat sessions have changed wrt tool responses. So old saves will
+    no longer work wrt tool responses
+
 
 #### ToDo
 

tools/server/public_simplechat/simplechat.js

@@ -253,7 +253,7 @@ class ChatMessageEx {
      * @param {ChatMessageEx} old
      */
     static newFrom(old) {
-        return new ChatMessageEx(new NSChatMessage(old.ns.role, old.ns.content, old.ns.reasoning_content, old.ns.tool_calls), old.trimmedContent)
+        return new ChatMessageEx(new NSChatMessage(old.ns.role, old.ns.content, old.ns.reasoning_content, old.ns.tool_calls, old.ns.tool_call_id, old.ns.name), old.trimmedContent)
     }
 
     clear() {
@@ -465,7 +465,7 @@ class SimpleChat {
         this.iLastSys = ods.iLastSys;
         this.xchat = [];
         for (const cur of ods.xchat) {
-            this.xchat.push(new ChatMessageEx(new NSChatMessage(cur.ns.role, cur.ns.content, cur.ns.reasoning_content, cur.ns.tool_calls), cur.trimmedContent))
+            this.xchat.push(new ChatMessageEx(new NSChatMessage(cur.ns.role, cur.ns.content, cur.ns.reasoning_content, cur.ns.tool_calls, cur.ns.tool_call_id, cur.ns.name), cur.trimmedContent))
         }
     }
 
@@ -1053,10 +1053,10 @@ class MultiChatUI {
         }
         if (msg.ns.has_toolresponse()) {
             if (msg.ns.tool_call_id) {
-                showList.push(['toolcallid', msg.ns.tool_call_id])
+                showList.push(['toolcallid', `tool-call-id: ${msg.ns.tool_call_id}`])
             }
             if (msg.ns.name) {
-                showList.push(['toolname', msg.ns.name])
+                showList.push(['toolname', `tool-name: ${msg.ns.name}`])
             }
         }
         if (msg.ns.getContent().trim().length > 0) {