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>

tests/test_calls.py

@@ -93,6 +93,24 @@ def test_generate_day_list_cycle_covers_roster(db_session):
     assert all(c.status == models.STATUS_PENDING for c in generated)
 
 
+def test_generate_day_list_cycle_batches_continue_across_days(db_session):
+    course, students = make_course(db_session, mode=models.SELECTION_CYCLE)
+    rng = random.Random(1)
+    day2 = DAY + datetime.timedelta(days=2)
+
+    first = calls.generate_day_list(db_session, course, DAY, n=3, rng=rng)
+    assert len(first) == 3
+    # Next day's batch continues the pass: the remaining student only.
+    second = calls.generate_day_list(db_session, course, day2, n=3, rng=rng)
+    assert len(second) == 1
+    assert sorted(c.student_id for c in first + second) == sorted(
+        s.id for s in students
+    )
+    # Pass complete: the next batch starts a fresh pass.
+    third = calls.generate_day_list(db_session, course, day2, n=3, rng=rng)
+    assert len(third) == 3
+
+
 def test_generate_day_list_weighted_length_and_optouts(db_session):
     course, students = make_course(db_session)
     db_session.add(