fix: clear agent input selection after send

ServerDeck/src/App.tsx

@@ -297,6 +297,15 @@ function isTerminalViewportNearBottom(terminal: Terminal) {
   return activeBuffer.baseY - activeBuffer.viewportY <= 1;
 }
 
+function clearDocumentSelection() {
+  const selection = window.getSelection();
+  if (!selection || selection.rangeCount === 0) {
+    return;
+  }
+
+  selection.removeAllRanges();
+}
+
 const MAX_TERMINAL_BUFFER_CHUNKS = 800;
 const MAX_TERMINAL_BUFFER_CHARS = 400_000;
 
@@ -2070,6 +2079,8 @@ export default function App() {
     terminal.open(terminalMountNode);
     const clearSelectionFrame = window.requestAnimationFrame(() => {
       terminal.clearSelection();
+      clearDocumentSelection();
+      terminal.focus();
     });
     terminal.attachCustomKeyEventHandler((event) => {
       const sequence = getTerminalControlSequence(event);
@@ -2095,8 +2106,25 @@ export default function App() {
       });
     }
 
+    const terminalTextarea = terminal.textarea;
+    const handleTerminalBlur = () => {
+      window.requestAnimationFrame(() => {
+        terminal.clearSelection();
+        clearDocumentSelection();
+      });
+    };
+    terminalTextarea?.addEventListener("blur", handleTerminalBlur);
+
     const disposable = terminal.onData((data) => {
       sendActiveTerminalInput(data);
+
+      if (data === "\r") {
+        window.requestAnimationFrame(() => {
+          terminal.focus();
+          terminal.clearSelection();
+          clearDocumentSelection();
+        });
+      }
     });
 
     let frameId: number | null = null;
@@ -2131,6 +2159,7 @@ export default function App() {
       }
       window.cancelAnimationFrame(clearSelectionFrame);
       disposable.dispose();
+      terminalTextarea?.removeEventListener("blur", handleTerminalBlur);
       terminal.dispose();
       terminalRef.current = null;
       fitAddonRef.current = null;

ServerDeck/src/components/agent/AgentWorkspace.tsx

@@ -12,6 +12,15 @@ export type ModelOption = {
   model: string;
 };
 
+function clearDocumentSelection() {
+  const selection = window.getSelection();
+  if (!selection || selection.rangeCount === 0) {
+    return;
+  }
+
+  selection.removeAllRanges();
+}
+
 type AgentWorkspaceProps = {
   title: string;
   description: string;
@@ -198,6 +207,7 @@ export function AgentWorkspace({
       node.focus({ preventScroll: true });
       const cursor = node.value.length;
       node.setSelectionRange(cursor, cursor);
+      clearDocumentSelection();
     });
   }, [activeSessionDetail?.session.id, composerValue, createBusy, latestMessageSignature, sendBusy]);
 
@@ -574,6 +584,7 @@ export function AgentWorkspace({
                 rows={3}
                 value={composerValue}
                 onKeyDown={handleComposerKeyDown}
+                onBlur={() => clearDocumentSelection()}
                 onChange={(event) => {
                   if (activeSessionDetail) {
                     onFollowUpInputChange(event.target.value);