List lifecycle polish and cycle batches, from live walkthrough feedback

Generating a call list is non-destructive by intent: the button reads
Regenerate when an unused list exists and replaces it freely, with a
confirmation only when the day already has recorded outcomes (which
are always kept). The print view shows resolved calls' outcomes,
offers generate/regenerate in place, and the home page links to the
existing list. The day editor now supports adding calls after the
fact (any roster student, with status/assessment/note), completing
full editability: add, edit, delete.

Cycle mode is now a true rolling rotation driven by non-skipped call
counts: batches of n take the next students of the current pass,
remainder batches come up short rather than wrapping, a new pass
starts when everyone has been called, and the cycle continues across
lists and class days. Live mode uses the same rule.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

coldcall_lti/models.py

@@ -320,6 +320,18 @@ def class_has_begun(session, course_id, day, now=None):
     return now.time() >= row.start_time
 
 
+def nonskipped_call_counts(session, course_id):
+    """Calls per student excluding skipped ones — a student's position
+    in the cycle-mode pass. Pending list slots count: a printed line
+    is a claim on being called."""
+    rows = session.execute(
+        select(Call.student_id, func.count())
+        .where(Call.course_id == course_id, Call.status != STATUS_SKIPPED)
+        .group_by(Call.student_id)
+    ).all()
+    return dict(rows)
+
+
 def students_present(session, course_id, on_date):
     """Active student-role enrollees minus those opted out for the date."""
     opted_out = select(OptOut.student_id).where(