Fix remaining API issues and borrow conflicts

- Rename display param to target_display to avoid tracing conflict
- Refactor session loop to avoid holding borrow across handle_message

agent/src/capture/dxgi.rs

@@ -55,7 +55,7 @@ impl DxgiCapturer {
 
     /// Create D3D device and output duplication
     fn create_duplication(
-        display: &Display,
+        target_display: &Display,
     ) -> Result<(ID3D11Device, ID3D11DeviceContext, IDXGIOutputDuplication, DXGI_OUTDUPL_DESC)> {
         unsafe {
             // Create DXGI factory
@@ -63,7 +63,7 @@ impl DxgiCapturer {
                 .context("Failed to create DXGI factory")?;
 
             // Find the adapter and output for this display
-            let (adapter, output) = Self::find_adapter_output(&factory, display)?;
+            let (adapter, output) = Self::find_adapter_output(&factory, target_display)?;
 
             // Create D3D11 device
             let mut device: Option<ID3D11Device> = None;
@@ -100,7 +100,7 @@ impl DxgiCapturer {
                 "Created DXGI duplication: {}x{}, display: {}",
                 desc.ModeDesc.Width,
                 desc.ModeDesc.Height,
-                &display.name
+                target_display.name
             );
 
             Ok((device, context, duplication, desc))

agent/src/session/mod.rs

@@ -59,8 +59,9 @@ impl SessionManager {
 
     /// Run the session main loop
     pub async fn run(&mut self) -> Result<()> {
-        let transport = self.transport.as_mut()
-            .ok_or_else(|| anyhow::anyhow!("Not connected"))?;
+        if self.transport.is_none() {
+            anyhow::bail!("Not connected");
+        }
 
         self.state = SessionState::Active;
 
@@ -91,7 +92,17 @@ impl SessionManager {
         // Main loop
         loop {
             // Check for incoming messages (non-blocking)
-            while let Some(msg) = transport.try_recv()? {
+            // Collect messages first, then release borrow before handling
+            let messages: Vec<Message> = {
+                let transport = self.transport.as_mut().unwrap();
+                let mut msgs = Vec::new();
+                while let Some(msg) = transport.try_recv()? {
+                    msgs.push(msg);
+                }
+                msgs
+            };
+
+            for msg in messages {
                 self.handle_message(&mut input, msg)?;
             }
 
@@ -107,6 +118,7 @@ impl SessionManager {
                         let msg = Message {
                             payload: Some(message::Payload::VideoFrame(encoded.frame)),
                         };
+                        let transport = self.transport.as_mut().unwrap();
                         transport.send(msg).await?;
                     }
                 }