Fix Ctrl+C behavior in BTW composer

extensions/btw.ts

@@ -1083,6 +1083,17 @@ class BtwOverlayComponent extends Container implements Focusable {
 
     const originalHandleInput = this.input.handleInput.bind(this.input);
     this.input.handleInput = (data: string) => {
+      if (keybindings.matches(data, "app.clear")) {
+        if (this.input.getValue().length > 0) {
+          this.input.setValue("");
+          this.tui.requestRender();
+          return;
+        }
+
+        this.onDismissCallback();
+        return;
+      }
+
       if (keybindings.matches(data, "tui.select.cancel")) {
         this.onDismissCallback();
         return;

package.json

@@ -1,6 +1,6 @@
 {
   "name": "pi-btw",
-  "version": "0.3.7",
+  "version": "0.3.8",
   "description": "A pi extension for parallel side conversations with /btw",
   "type": "module",
   "license": "MIT",

tests/btw.runtime.test.ts

@@ -453,6 +453,7 @@ function createHarness(
       italic: (text: string) => string;
       bold: (text: string) => string;
     };
+    keybindingMatches?: (data: string, id: string) => boolean;
   } = {},
 ) {
   const commands = new Map<string, RegisteredCommand>();
@@ -473,7 +474,7 @@ function createHarness(
     bold: (text: string) => text,
   };
   const keybindings = {
-    matches: (_data: string, _id: string) => false,
+    matches: options.keybindingMatches ?? ((_data: string, _id: string) => false),
   };
 
   const sessionManager = {
@@ -975,6 +976,54 @@ describe("btw runtime behavior", () => {
     expect(record.session.prompt).not.toHaveBeenCalled();
   });
 
+  it("clears a non-empty BTW composer on app.clear without dismissing the overlay", async () => {
+    const harness = createHarness([], {
+      keybindingMatches: (_data, id) => id === "app.clear" || id === "tui.select.cancel",
+    });
+
+    await harness.runSessionStart();
+    await harness.command("btw", "");
+
+    const overlay = harness.latestOverlayComponent();
+    overlay.input.setValue("draft follow-up");
+    overlay.input.handleInput("\x03");
+
+    expect(overlay.input.getValue()).toBe("");
+    expect(harness.overlayHandles.at(-1)?.hideCalls).toBe(0);
+  });
+
+  it("dismisses the BTW overlay on app.clear when the composer is empty", async () => {
+    const harness = createHarness([], {
+      keybindingMatches: (_data, id) => id === "app.clear" || id === "tui.select.cancel",
+    });
+
+    await harness.runSessionStart();
+    await harness.command("btw", "");
+
+    const overlay = harness.latestOverlayComponent();
+    overlay.input.setValue("");
+    overlay.input.handleInput("\x03");
+    await flushAsyncWork();
+
+    expect(harness.overlayHandles.at(-1)?.hideCalls).toBe(1);
+  });
+
+  it("still dismisses the BTW overlay on select cancel", async () => {
+    const harness = createHarness([], {
+      keybindingMatches: (_data, id) => id === "tui.select.cancel",
+    });
+
+    await harness.runSessionStart();
+    await harness.command("btw", "");
+
+    const overlay = harness.latestOverlayComponent();
+    overlay.input.setValue("draft follow-up");
+    overlay.input.handleInput("\x1b");
+    await flushAsyncWork();
+
+    expect(harness.overlayHandles.at(-1)?.hideCalls).toBe(1);
+  });
+
   it("aborts, disposes, and unsubscribes the active BTW sub-session when Escape dismisses mid-stream", async () => {
     const harness = createHarness();
     const blocking = createBlockingToolStream();