Clear stale terminal selection during pane recovery (#13677)

* fix(terminal): forward copy to TUI selections

* fix(terminal): narrow recovery selection cleanup

src/renderer/src/lib/pane-manager/pane-lifecycle.test.ts

@@ -527,6 +527,12 @@ describe('openTerminal — addon and provider wiring', () => {
       deregisterCharacterJoiner: vi.fn((joinerId: number) => {
         events.push(`deregisterCharacterJoiner:${joinerId}`)
       }),
+      clearSelection: vi.fn(() => {
+        events.push('clearSelection')
+      }),
+      dispose: vi.fn(() => {
+        events.push('dispose')
+      }),
       unicode: unicodeProxy,
       buffer: { active: { cursorX: 0, cursorY: 0 } }
     } as unknown as ManagedPaneInternal['terminal']
@@ -607,6 +613,15 @@ describe('openTerminal — addon and provider wiring', () => {
     expect(pane.arabicShapingJoinerCleanup).toBeNull()
   })
 
+  it('clears selection before disposing a remounted pane', () => {
+    const { pane, events } = createOpenTerminalHarness()
+    openTerminal(pane)
+
+    disposePane(pane, new Map([[pane.id, pane]]))
+
+    expect(events.indexOf('clearSelection')).toBeLessThan(events.indexOf('dispose'))
+  })
+
   // Why: a link streamed under a stationary pointer must re-linkify on the next
   // move; openTerminal wires the hover-cache reset and disposePane must detach it.
   it('installs the streamed-output linkifier hover reset and disposes it', () => {

src/renderer/src/lib/pane-manager/pane-lifecycle.ts

@@ -254,6 +254,12 @@ export function disposePane(
   } catch {
     /* ignore */
   }
+  try {
+    // Drop renderer selection state before a recovery remount replaces the surface.
+    pane.terminal.clearSelection()
+  } catch {
+    /* ignore */
+  }
   try {
     pane.terminal.dispose()
   } catch {