Phase 5: reporting, exports, pronouns, and roster freshness

Instructor participation report: per-student histograms, outcome mix
by class day, and a sortable table including the fairness ratio
(answered calls over questions present for, with opt-out days out of
the denominator), plus CSV exports of students, calls, and opt-outs.

Assessment scales are now per-course data: ordered levels with labels
and points out of 100 (defaults carry the old R grading values), with
calls referencing levels by id so renames follow through to history.
Renaming, re-pointing, reordering, and adding levels are always
allowed; deleting a level in use by recorded calls is blocked.

Pronouns and course term dates come from Canvas custom variable
substitutions, at launch and roster-wide via rlid-scoped NRPS; the
student page notes that names/pronouns are Canvas-sourced. Rosters
can also be refreshed outside launches: a "Sync roster now" button
and a sync-rosters CLI command for an hourly cron job, skipping ended
courses. Alembic now runs SQLite-compatible batch migrations with a
constraint naming convention.

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

tests/conftest.py

@@ -32,3 +32,17 @@ def make_app(tmp_path, dev_mode=True):
 @pytest.fixture
 def dev_client(tmp_path):
     return make_app(tmp_path, dev_mode=True).test_client()
+
+
+def outcome_actions(page):
+    """Map outcome button labels to their form values on a live page,
+    e.g. {'GOOD': 'level-1', ..., 'Missing': 'missing'}."""
+    import re
+
+    return {
+        label.strip(): value
+        for value, label in re.findall(
+            r'<button type="submit" name="action" value="([^"]+)">([^<]+)</button>',
+            page,
+        )
+    }