Phase 3: instructor in-class UI

Live mode with resolve-before-next call flow and one-tap outcomes
(assessments, missing, skip); printable numbered call lists with
pictures and a blank notes column; a day editor for after-class
outcome entry, replacing hand-editing of call_list TSVs; and a
per-course settings page (selection mode, weight factor, assessment
visibility). Selection honors opt-outs and the course's mode: weighted
draws use full-course answered-call history, cycle mode calls everyone
once per day before starting over and treats skips as never called.

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

tests/conftest.py

@@ -2,6 +2,8 @@ import pytest
 from sqlalchemy import create_engine
 from sqlalchemy.orm import sessionmaker
 
+from coldcall_lti import create_app
+from coldcall_lti.config import Config
 from coldcall_lti.db import Base
 
 
@@ -13,3 +15,20 @@ def db_session():
     yield session
     session.close()
     engine.dispose()
+
+
+def make_app(tmp_path, dev_mode=True):
+    class TestConfig(Config):
+        TESTING = True
+        DATABASE_URL = f"sqlite:///{tmp_path}/test.sqlite3"
+        DEV_MODE = dev_mode
+        SECRET_KEY = "test"
+
+    app = create_app(TestConfig)
+    Base.metadata.create_all(app.extensions["db_engine"])
+    return app
+
+
+@pytest.fixture
+def dev_client(tmp_path):
+    return make_app(tmp_path, dev_mode=True).test_client()