fix: restore event scope stack from checkpoint event record

Replay the event record during _restore_runtime to rebuild
_event_id_stack with correct event IDs. Remove manual push_event_scope
calls from task and crew resume paths that used task UUIDs instead
of event IDs.

lib/crewai/src/crewai/crew.py

@@ -412,6 +412,39 @@ class Crew(FlowTrackable, BaseModel):
         if self.checkpoint_train is not None:
             self._train = self.checkpoint_train
 
+        self._restore_event_scope()
+
+    def _restore_event_scope(self) -> None:
+        """Rebuild the event scope stack from the checkpoint's event record."""
+        from crewai.events.event_bus import crewai_event_bus
+        from crewai.events.event_context import (
+            SCOPE_ENDING_EVENTS,
+            SCOPE_STARTING_EVENTS,
+            restore_event_scope,
+            set_last_event_id,
+        )
+
+        state = crewai_event_bus._runtime_state
+        if state is None:
+            return
+
+        stack: list[tuple[str, str]] = []
+        last_event_id: str | None = None
+        for node in sorted(
+            state.event_record.nodes.values(),
+            key=lambda n: n.event.emission_sequence or 0,
+        ):
+            evt = node.event
+            last_event_id = evt.event_id
+            if evt.type in SCOPE_STARTING_EVENTS:
+                stack.append((evt.event_id, evt.type))
+            elif evt.type in SCOPE_ENDING_EVENTS and stack:
+                stack.pop()
+
+        restore_event_scope(tuple(stack))
+        if last_event_id is not None:
+            set_last_event_id(last_event_id)
+
     @field_validator("id", mode="before")
     @classmethod
     def _deny_user_set_id(cls, v: UUID4 | None, info: Any) -> UUID4 | None:

lib/crewai/src/crewai/crews/utils.py

@@ -279,7 +279,6 @@ def prepare_kickoff(
     from crewai.events.event_bus import crewai_event_bus
     from crewai.events.event_context import (
         get_current_parent_id,
-        push_event_scope,
         reset_last_event_id,
     )
     from crewai.events.types.crew_events import CrewKickoffStartedEvent
@@ -305,7 +304,6 @@ def prepare_kickoff(
         normalized = before_callback(normalized)
 
     if resuming and crew._kickoff_event_id:
-        push_event_scope(crew._kickoff_event_id, "crew_kickoff_started")
         if crew.verbose:
             from crewai.events.utils.console_formatter import ConsoleFormatter
 

lib/crewai/src/crewai/events/event_context.py

@@ -133,6 +133,11 @@ def triggered_by_scope(event_id: str) -> Generator[None, None, None]:
         _triggering_event_id.set(previous)
 
 
+def restore_event_scope(stack: tuple[tuple[str, str], ...]) -> None:
+    """Restore the event scope stack from a checkpoint."""
+    _event_id_stack.set(stack)
+
+
 def push_event_scope(event_id: str, event_type: str = "") -> None:
     """Push an event ID and type onto the scope stack."""
     config = _event_context_config.get() or _default_config

lib/crewai/src/crewai/task.py

@@ -39,7 +39,6 @@ from crewai.agents.agent_builder.base_agent import BaseAgent, _resolve_agent
 from crewai.context import reset_current_task_id, set_current_task_id
 from crewai.core.providers.content_processor import process_content
 from crewai.events.event_bus import crewai_event_bus
-from crewai.events.event_context import push_event_scope
 from crewai.events.types.task_events import (
     TaskCompletedEvent,
     TaskFailedEvent,
@@ -599,9 +598,7 @@ class Task(BaseModel):
             tools = tools or self.tools or []
 
             self.processed_by_agents.add(agent.role)
-            if agent.agent_executor and agent.agent_executor._resuming:
-                push_event_scope(str(self.id), "task_started")
-            else:
+            if not (agent.agent_executor and agent.agent_executor._resuming):
                 crewai_event_bus.emit(
                     self, TaskStartedEvent(context=context, task=self)
                 )
@@ -723,9 +720,7 @@ class Task(BaseModel):
             tools = tools or self.tools or []
 
             self.processed_by_agents.add(agent.role)
-            if agent.agent_executor and agent.agent_executor._resuming:
-                push_event_scope(str(self.id), "task_started")
-            else:
+            if not (agent.agent_executor and agent.agent_executor._resuming):
                 crewai_event_bus.emit(
                     self, TaskStartedEvent(context=context, task=self)
                 )