chore: bump version to v0.2.42 [skip ci]

- Messages aus result.details.messages extrahieren
- Content = Array von {type, text} blocks → nur text extrahieren
- Thinking-Blocks + REPLY_SKIP + ANNOUNCE_SKIP herausfiltern

VERSION

@@ -1 +1 @@
-0.2.38
+0.2.42

backend/Services/OpenClawGatewayClient.cs

@@ -145,24 +145,49 @@ public sealed class OpenClawGatewayClient(HttpClient httpClient, IConfiguration
     {
         try
         {
-            var result = await InvokeToolAsync("sessions_history", new { sessionKey, limit, offset });
+            var result = await InvokeToolAsync("sessions_history", new {
+                sessionKey, limit, offset,
+                includeTools = false
+            });
             if (result is null) return new List<MessageEntry>();
 
-            var messages = new List<MessageEntry>();
+            // sessions_history returns { details: { messages: [...] } }
-            var array = result as JsonArray ?? result.AsArray();
+            var messageArray = result["details"]?["messages"] as JsonArray;
-            if (array is null) return messages;
+            if (messageArray is null) return new List<MessageEntry>();
 
-            foreach (var msg in array)
+            var messages = new List<MessageEntry>();
+            foreach (var msg in messageArray.Cast<JsonNode?>())
             {
                 if (msg is null) continue;
                 var role = msg["role"]?.GetValue<string>() ?? "";
-                var content = msg["content"]?.GetValue<string>() ?? "";
+                // Skip non-user/assistant roles
+                if (role is not ("user" or "assistant")) continue;
+
+                // Content is an array of blocks: [{type: "text"/"thinking", text: "..."}]
+                // Extract only pure text blocks, skip thinking-only messages
+                var contentBlocks = msg["content"] as JsonArray;
+                if (contentBlocks is null) continue;
+
+                var visibleTexts = new List<string>();
+                foreach (var block in contentBlocks.Cast<JsonNode?>())
+                {
+                    if (block is null) continue;
+                    var type = block["type"]?.GetValue<string>() ?? "";
+                    var text = block["text"]?.GetValue<string>() ?? "";
+                    if (type == "text" && !string.IsNullOrWhiteSpace(text))
+                        visibleTexts.Add(text);
+                }
+
+                var visibleContent = string.Join(" ", visibleTexts).Trim();
+                if (string.IsNullOrWhiteSpace(visibleContent)) continue;
+
+                // Skip system-only replies
+                if (visibleContent is "REPLY_SKIP" or "ANNOUNCE_SKIP") continue;
+
                 var timestamp = msg["timestamp"]?.GetValue<string>()
-                    ?? msg["ts"]?.GetValue<string>()
-                    ?? msg["createdAt"]?.GetValue<string>()
                     ?? DateTimeOffset.UtcNow.ToString("o");
 
-                messages.Add(new MessageEntry(role, content, timestamp));
+                messages.Add(new MessageEntry(role, visibleContent, timestamp));
             }
 
             return messages;