Initial commit: habit tracker PWA with Google OAuth, push notifications

FastAPI + SQLAlchemy/Alembic + MariaDB backend with Jinja2/htmx/Alpine
server-rendered frontend. Multi-user via Google OAuth, daily habit
tracking, monthly/weekly history views, Web Push reminders via
APScheduler, and PWA support (manifest, service worker, offline caching).

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

tests/test_schemas_habit.py

@@ -0,0 +1,51 @@
+import pytest
+from pydantic import ValidationError
+
+from app.models.habit import ALL_WEEKDAYS_MASK, HabitType
+from app.schemas.habit import HabitCreate
+
+
+def _base_kwargs(**overrides):
+    kwargs = {"name": "습관", "habit_type": HabitType.BUILD}
+    kwargs.update(overrides)
+    return kwargs
+
+
+def test_blank_name_rejected():
+    with pytest.raises(ValidationError):
+        HabitCreate(**_base_kwargs(name="   "))
+
+
+def test_name_is_stripped():
+    habit = HabitCreate(**_base_kwargs(name="  아침 운동  "))
+    assert habit.name == "아침 운동"
+
+
+def test_blank_condition_text_becomes_none():
+    habit = HabitCreate(**_base_kwargs(condition_text="   "))
+    assert habit.condition_text is None
+
+
+def test_condition_text_is_stripped_when_present():
+    habit = HabitCreate(**_base_kwargs(condition_text="  30분 이상  "))
+    assert habit.condition_text == "30분 이상"
+
+
+def test_weekdays_mask_zero_rejected():
+    with pytest.raises(ValidationError):
+        HabitCreate(**_base_kwargs(weekdays_mask=0))
+
+
+def test_weekdays_mask_over_max_rejected():
+    with pytest.raises(ValidationError):
+        HabitCreate(**_base_kwargs(weekdays_mask=ALL_WEEKDAYS_MASK + 1))
+
+
+def test_weekdays_mask_single_day_accepted():
+    habit = HabitCreate(**_base_kwargs(weekdays_mask=0b0000001))
+    assert habit.weekdays_mask == 0b0000001
+
+
+def test_weekdays_mask_defaults_to_all_days():
+    habit = HabitCreate(**_base_kwargs())
+    assert habit.weekdays_mask == ALL_WEEKDAYS_MASK