Fix CI: fallback to footer_objects until footer_actions is released

footer_actions is not yet in any released panel-material-ui version.
Use hasattr to detect it and fall back to footer_objects for now.
Revert pin bump to >=0.8.1.

Author: ghostiee-11

lumen/ai/ui.py

@@ -1634,11 +1634,12 @@ async def _generate_follow_up():
 
         if len(self.interface):
             message = self.interface.objects[-1]
+            attr = "footer_actions" if hasattr(message, "footer_actions") else "footer_objects"
             existing = [
-                obj for obj in (message.footer_actions or [])
+                obj for obj in (getattr(message, attr) or [])
                 if getattr(obj, 'name', '') != "FollowUp"
             ]
-            message.footer_actions = existing + [follow_up_button]
+            setattr(message, attr, existing + [follow_up_button])
 
     def __panel__(self):
         return self._main

pixi.toml

@@ -20,7 +20,7 @@ lint = ["py312", "lint"]
 [dependencies]
 bokeh = "*"
 holoviews = ">=1.17.0"
-panel-material-ui = ">=0.9.0"
+panel-material-ui = ">=0.8.1"
 hvplot = "*"
 intake = "<2"
 jinja2 = ">3.0"

pyproject.toml

@@ -42,7 +42,7 @@ dependencies = [
     "pandas",
     "panel >=1.7.5",
     "panel-graphic-walker[kernel] >=0.6.4",
-    "panel-material-ui >=0.9.0",
+    "panel-material-ui >=0.8.1",
     "panel-splitjs >=0.3.2",
     "param >=2.2.1",
     "pyarrow",