feat: Add _remove_all_targets method to CLI

Enables removing all monitoring targets from a session at once.

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

src/autoclaude/cli.py

@@ -314,6 +314,18 @@ class ClaudeCLI:
             return True
         return False
 
+    def _remove_all_targets(self, session: str) -> bool:
+        targets = self.load_targets()
+        if session in targets['targets']:
+            removed = targets['targets'][session].copy()
+            del targets['targets'][session]
+            self.save_targets(targets)
+            self.print_success(f"Removed all targets from {session}: {removed}")
+            return True
+        else:
+            self.print_warning(f"No targets found for session {session}")
+            return False
+
     def stop_orchestrator(self, session: str = None, window: int = None):
         if session and window:
             self.print_header(f"Removing Target {session}:{window}")