merge #130: drag-release bounce, session-delete terminal cleanup, silent resize (chalei1122-cell)

# Conflicts:
#	src/client/Sidebar.tsx

src/client/sidebar.module.css

@@ -182,7 +182,7 @@
 }
 
 .panelResizeActive {
-  background: var(--dsw-alias-interactive-bg-hover-accent);
+  /* Drag feedback disabled by local preference: no highlight while resizing. */
 }
 
 .panelBody {
@@ -267,7 +267,7 @@ body[data-dsh-sidebar-dragging] .bottomPanel {
 }
 
 .bottomResizeActive {
-  background: var(--dsw-alias-interactive-bg-hover-accent);
+  /* Drag feedback disabled by local preference: no highlight while resizing. */
 }
 
 /* The bottom panel's close control: the app's icon-button pattern (28px
@@ -504,8 +504,8 @@ body[data-dsh-sidebar-dragging] .bottomPanel {
   touch-action: none;
 }
 
-.cornerHandle:hover,
-.cornerHandle[data-dragging] {
+.cornerHandle:hover {
+  /* Only hover feedback stays; dragging highlight disabled by local preference. */
   background: var(--dsw-alias-interactive-bg-hover-accent);
 }
 

src/index.ts

@@ -935,6 +935,13 @@ export function apply(ctx: Context, config?: SidebarConfig): void {
     wss.close()
     agentListWss.close()
   }, 'dsh-better-sidebar: teardown')
+
+  // Close all UI terminals of a session when the conversation is deleted —
+  // terminals follow the session, not the reconnect grace. Agent terminals
+  // are owned by the agent lifecycle and are not touched here.
+  ctx.on('session/disposed', (session) => {
+    try { ptyManager.closeSession(session?.id) } catch {}
+  }, { global: true })
 }
 
 /** Push the live agent-terminal list for one session to a connected sidebar view. */

src/pty-manager.ts

@@ -243,6 +243,12 @@ export class PtyManager {
     }
   }
 
+  /** Close every terminal of one session (the conversation was deleted —
+   *  terminals must follow the session, not linger until the grace expires). */
+  closeSession(sessionId: string): void {
+    for (const key of this.keysOf(sessionId)) this.close(key)
+  }
+
   /** Close every terminal (plugin teardown). */
   disposeAll(): void {
     for (const timer of this.pendingCloses.values()) clearTimeout(timer)