feat: Enhance case collection and detail forms with timing overrides and custom screens

Co-authored-by: Copilot <copilot@github.com>

atlas/forms.py

@@ -289,9 +289,21 @@ class CaseCollectionForm(ModelForm):
                 "self_review",
                 "feedback_once_collection_complete",
                 "case_query_messaging_enabled",
+                "show_results_sharing_information",
                 "viewer_mode",
                 "question_time_limit",
+                "answer_entry_grace_period",
                 "prerequisites",
+                Fieldset(
+                    "Custom Start Screen",
+                    "start_screen_content",
+                    "start_screen_resources",
+                ),
+                Fieldset(
+                    "Custom End Overview",
+                    "end_overview_content",
+                    "end_overview_resources",
+                ),
             ),
             Fieldset("Valid User Groups", *user_fields) if user_fields else None,
             Div(
@@ -1285,7 +1297,12 @@ class CaseQuestionForm(ModelForm):
 class CaseDetailForm(ModelForm):
     class Meta:
         model = CaseDetail
-        fields = ["redact_history", "override_history"]
+        fields = [
+            "redact_history",
+            "override_history",
+            "question_time_limit_override",
+            "answer_entry_grace_period_override",
+        ]
 
     def __init__(self, *args, case_history: str = None, **kwargs):
         """
@@ -1308,6 +1325,16 @@ class CaseDetailForm(ModelForm):
         self.fields["override_history"].widget.attrs.setdefault("rows", 6)
         self.fields["override_history"].widget.attrs.setdefault("class", "form-control")
 
+        if "question_time_limit_override" in self.fields:
+            self.fields["question_time_limit_override"].help_text = (
+                "Leave blank to use the collection default answer time limit."
+            )
+
+        if "answer_entry_grace_period_override" in self.fields:
+            self.fields["answer_entry_grace_period_override"].help_text = (
+                "Leave blank to use the collection default answer-only grace period."
+            )
+
         # Build crispy helper/layout embedding the original history and buttons tied to override_history
         self.helper = FormHelper()
         self.helper.form_tag = False
@@ -1345,7 +1372,12 @@ class CaseDetailForm(ModelForm):
         self.helper.layout = Layout(
             HTML(history_block),
             Field("override_history"),
-            Field("redact_history")
+            Field("redact_history"),
+            Fieldset(
+                "Case Timing Overrides",
+                Field("question_time_limit_override"),
+                Field("answer_entry_grace_period_override"),
+            ),
         )