feat(agent): inject project context and sender info into AI chat messages

libs/agent/chat/service.rs

@@ -559,6 +559,38 @@ impl ChatService {
             messages.push(mem.to_system_message());
         }
 
+        // Inject project context so the AI knows which project it is operating in.
+        let project_info = format!(
+            "Current Project:\n{}\nDescription: {}\nPublic: {}",
+            request.project.display_name,
+            request.project.description.as_deref().unwrap_or("(none)"),
+            if request.project.is_public { "yes" } else { "no" }
+        );
+        messages.push(ChatCompletionRequestMessage::System(
+            ChatCompletionRequestSystemMessage {
+                content: async_openai::types::chat::ChatCompletionRequestSystemMessageContent::Text(project_info),
+                ..Default::default()
+            },
+        ));
+
+        // Inject sender info so the AI knows who is asking.
+        let mut sender_parts = vec![format!("**Sender:** {}", request.sender.username)];
+        if let Some(ref display_name) = request.sender.display_name {
+            sender_parts.push(display_name.clone());
+        }
+        if let Some(ref org) = request.sender.organization {
+            sender_parts.push(format!("({})", org));
+        }
+        let sender_display = sender_parts.join(" ");
+        messages.push(ChatCompletionRequestMessage::System(
+            ChatCompletionRequestSystemMessage {
+                content: async_openai::types::chat::ChatCompletionRequestSystemMessageContent::Text(
+                    format!("The person sending the next message:\n{}", sender_display),
+                ),
+                ..Default::default()
+            },
+        ));
+
         messages.push(ChatCompletionRequestMessage::User(
             ChatCompletionRequestUserMessage {
                 content: async_openai::types::chat::ChatCompletionRequestUserMessageContent::Text(