Make BeautifulSoup import lazy in models.py

- Update models.py to use string literals for BeautifulSoup types
- Allow OmniMCP to run without BeautifulSoup dependency

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: abrichr

openadapt/models.py

@@ -9,7 +9,7 @@
 import sys
 import textwrap
 
-from bs4 import BeautifulSoup
+# Lazy import BeautifulSoup when needed
 from pynput import keyboard
 from PIL import Image, ImageChops
 import numpy as np
@@ -790,16 +790,16 @@ def __str__(self) -> str:
         # Return the complete representation including the truncated message
         return f"BrowserEvent({base_repr}, message={message_copy})"
 
-    def parse(self) -> tuple[BeautifulSoup, BeautifulSoup | None]:
+    def parse(self) -> "tuple['BeautifulSoup', 'BeautifulSoup | None']":
         """Parses the visible HTML and optionally extracts the target element.
 
         This method processes the browser event to parse the visible HTML and,
         if the event has a targetId, extracts the target HTML element.
 
         Returns:
             A tuple containing:
-            - BeautifulSoup: The parsed soup of the visible HTML.
-            - BeautifulSoup | None: The target HTML element if the event type is
+            - bs4.BeautifulSoup: The parsed soup of the visible HTML.
+            - bs4.BeautifulSoup | None: The target HTML element if the event type is
                 "click"; otherwise, None.
 
         Raises: