feat(dashboard): AgentModal live working feed & thinking stream

backend/Controllers/DashboardController.cs

@@ -343,6 +343,23 @@ public class DashboardController(
         }
     }
 
+    /// <summary>
+    /// Returns the most recent activity entries (assistant messages) for a specific agent.
+    /// </summary>
+    [HttpGet("agents/{id}/activity")]
+    public async Task<List<AgentActivityEntry>> GetAgentActivity(string id, [FromQuery] int limit = 5)
+    {
+        try
+        {
+            return await gateway.GetAgentActivityAsync(id, Math.Clamp(limit, 1, 20));
+        }
+        catch (Exception ex)
+        {
+            logger.LogWarning(ex, "GetAgentActivity failed for {AgentId}", id);
+            return new List<AgentActivityEntry>();
+        }
+    }
+
     /// <summary>
     /// Returns the list of available models that can be assigned to agents.
     /// Reads from OpenClaw config dynamically, falls back to hardcoded list.

backend/Models/Dashboard.cs

@@ -104,3 +104,8 @@ public sealed record UpdateDashboardTaskRequest(
 public sealed record UpdateDashboardTaskStatusRequest(
     string Status
 );
+
+public sealed record AgentActivityEntry(
+    string Time,
+    string Text
+);

backend/Services/OpenClawGatewayClient.cs

@@ -953,6 +953,44 @@ public sealed class OpenClawGatewayClient(HttpClient httpClient, IConfiguration
         return Math.Clamp(totalQueuePressure + agentPressure, 0, 100);
     }
 
+    /// <summary>
+    /// Fetches the most recent assistant activity (last N messages) for a specific agent.
+    /// Returns entries with timestamp and truncated content text.
+    /// Falls back to an empty list if the session is unreachable.
+    /// </summary>
+    public async Task<List<AgentActivityEntry>> GetAgentActivityAsync(string agentId, int limit = 5)
+    {
+        var entries = new List<AgentActivityEntry>();
+        try
+        {
+            var sessionKey = $"agent:{agentId}:main";
+            var messages = await GetSessionHistoryAsync(sessionKey, Math.Clamp(limit * 2, 1, 100));
+            foreach (var msg in messages)
+            {
+                if (!string.Equals(msg.Role, "assistant", StringComparison.OrdinalIgnoreCase))
+                    continue;
+                if (string.IsNullOrWhiteSpace(msg.Content))
+                    continue;
+                if (msg.Content == "REPLY_SKIP" || msg.Content == "ANNOUNCE_SKIP")
+                    continue;
+
+                // Truncate content to first 200 chars for compact display
+                var text = msg.Content.Length > 200
+                    ? msg.Content[..200] + "…"
+                    : msg.Content;
+                var ts = ParseTimestamp(msg.Timestamp);
+                var timeAgo = FormatTimeAgo(ts);
+
+                entries.Add(new AgentActivityEntry(timeAgo, text));
+            }
+        }
+        catch
+        {
+            // Return empty list if gateway is unreachable
+        }
+        return entries.Take(Math.Clamp(limit, 1, 20)).ToList();
+    }
+
     /// <summary>
     /// Returns the list of available models by reading from the OpenClaw config,
     /// with fallback to hardcoded list.