ComfyAPI Core v0.0.2 (#8962)

* ComfyAPI Core v0.0.2

* Respond to PR feedback

* Fix Python 3.9 errors

* Fix missing backward compatibility proxy

* Reorganize types a bit

The input types, input impls, and utility types are now all available in
the versioned API. See the change in `comfy_extras/nodes_video.py` for
an example of their usage.

* Remove the need for `--generate-api-stubs`

* Fix generated stubs differing by Python version

* Fix ruff formatting issues

comfy_execution/progress.py

@@ -1,4 +1,6 @@
-from typing import TypedDict, Dict, Optional
+from __future__ import annotations
+
+from typing import TypedDict, Dict, Optional, Tuple
 from typing_extensions import override
 from PIL import Image
 from enum import Enum
@@ -10,6 +12,7 @@ if TYPE_CHECKING:
 from protocol import BinaryEventTypes
 from comfy_api import feature_flags
 
+PreviewImageTuple = Tuple[str, Image.Image, Optional[int]]
 
 class NodeState(Enum):
     Pending = "pending"
@@ -52,7 +55,7 @@ class ProgressHandler(ABC):
         max_value: float,
         state: NodeProgressState,
         prompt_id: str,
-        image: Optional[Image.Image] = None,
+        image: PreviewImageTuple | None = None,
     ):
         """Called when a node's progress is updated"""
         pass
@@ -103,7 +106,7 @@ class CLIProgressHandler(ProgressHandler):
         max_value: float,
         state: NodeProgressState,
         prompt_id: str,
-        image: Optional[Image.Image] = None,
+        image: PreviewImageTuple | None = None,
     ):
         # Handle case where start_handler wasn't called
         if node_id not in self.progress_bars:
@@ -196,7 +199,7 @@ class WebUIProgressHandler(ProgressHandler):
         max_value: float,
         state: NodeProgressState,
         prompt_id: str,
-        image: Optional[Image.Image] = None,
+        image: PreviewImageTuple | None = None,
     ):
         # Send progress state of all nodes
         if self.registry:
@@ -231,7 +234,6 @@ class WebUIProgressHandler(ProgressHandler):
         if self.registry:
             self._send_progress_state(prompt_id, self.registry.nodes)
 
-
 class ProgressRegistry:
     """
     Registry that maintains node progress state and notifies registered handlers.
@@ -285,7 +287,7 @@ class ProgressRegistry:
                 handler.start_handler(node_id, entry, self.prompt_id)
 
     def update_progress(
-        self, node_id: str, value: float, max_value: float, image: Optional[Image.Image]
+        self, node_id: str, value: float, max_value: float, image: PreviewImageTuple | None = None
     ) -> None:
         """Update progress for a node"""
         entry = self.ensure_entry(node_id)
@@ -317,7 +319,7 @@ class ProgressRegistry:
             handler.reset()
 
 # Global registry instance
-global_progress_registry: ProgressRegistry = None
+global_progress_registry: ProgressRegistry | None = None
 
 def reset_progress_state(prompt_id: str, dynprompt: "DynamicPrompt") -> None:
     global global_progress_registry