fix: preserve platform application typing

lib/crewai-core/src/crewai_core/platform_apps.py

@@ -1,9 +1,9 @@
 """CrewAI Platform application catalog."""
 
-from typing import Final
+from typing import Final, Literal, get_args
 
 
-PLATFORM_APPS: Final[tuple[str, ...]] = (
+PlatformApp = Literal[
     "asana",
     "box",
     "clickup",
@@ -20,4 +20,6 @@ PLATFORM_APPS: Final[tuple[str, ...]] = (
     "slack",
     "stripe",
     "zendesk",
-)
+]
+
+PLATFORM_APPS: Final[tuple[str, ...]] = (*get_args(PlatformApp),)

lib/crewai/src/crewai/agents/agent_builder/base_agent.py

@@ -9,6 +9,7 @@ import re
 from typing import TYPE_CHECKING, Annotated, Any, Final, Literal
 import uuid
 
+from crewai_core.platform_apps import PLATFORM_APPS, PlatformApp
 from pydantic import (
     UUID4,
     BaseModel,
@@ -57,6 +58,9 @@ from crewai.utilities.rpm_controller import RPMController
 from crewai.utilities.string_utils import interpolate_only
 
 
+__all__ = ["PLATFORM_APPS"]
+
+
 if TYPE_CHECKING:
     from crewai.context import ExecutionContext
     from crewai.crew import Crew
@@ -180,8 +184,7 @@ _SLUG_RE: Final[re.Pattern[str]] = re.compile(
 )
 
 
-PlatformApp = str
-PlatformAppOrAction = str
+PlatformAppOrAction = PlatformApp | str
 
 
 class BaseAgent(BaseModel, ABC, metaclass=AgentMeta):