feat: add clear all actions button to Actions tab

Stale actions accumulate when permissions are handled directly in Claude
Code rather than through Bobber UI. Add a trash button to clear all
pending actions at once.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: winrey

Sources/Bobber/Services/SessionManager.swift

@@ -213,6 +213,10 @@ class SessionManager: ObservableObject {
         pendingActions.removeAll { $0.id == actionId }
     }
 
+    func clearAllActions() {
+        pendingActions.removeAll()
+    }
+
     func cleanupSessions() {
         let now = Date()
         for i in sessions.indices {

Sources/Bobber/UI/ActionsListView.swift

@@ -31,6 +31,15 @@ struct ActionsListView: View {
                     }
                     Spacer()
                     HStack(spacing: 12) {
+                        Button(action: {
+                            sessionManager.clearAllActions()
+                            currentIndex = 0
+                        }) {
+                            Image(systemName: "trash")
+                                .foregroundColor(.secondary)
+                        }
+                        .buttonStyle(.plain)
+                        .help("Clear all actions")
                         Button(action: { navigate(-1) }) {
                             Image(systemName: "chevron.left")
                         }