Ajout de python -m app.bootstrap : instance vierge sans jeu de démo

Crée une édition + le premier compte coordination (mot de passe) + 3 créneaux
types par défaut, et affiche l'UUID à mettre dans VITE_EDITION_ID. Documenté
dans README (« Vraie instance, sans jeu de démo »).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017uUsRg7XzopkCPWimwg9ZM

backend/tests/test_bootstrap.py

@@ -0,0 +1,66 @@
+import argparse
+import datetime as dt
+
+import pytest
+from sqlmodel import select
+
+from app.bootstrap import run
+from app.models import Account, DayPart, Edition, Role
+
+
+def _args(**overrides) -> argparse.Namespace:
+    base = {
+        "name": "Festival 2027",
+        "start": "2027-07-01",
+        "end": "2027-07-04",
+        "email": "coord@monfestival.fr",
+        "password": "un-mot-de-passe-solide",
+        "year": None,
+        "no_day_parts": False,
+        "retention_days": None,
+    }
+    base.update(overrides)
+    return argparse.Namespace(**base)
+
+
+def test_creates_edition_coordinator_and_default_day_parts(session):
+    edition = run(_args(), session)
+
+    reloaded = session.get(Edition, edition.id)
+    assert reloaded.name == "Festival 2027"
+    assert reloaded.year == 2027
+    assert reloaded.start_date == dt.date(2027, 7, 1)
+
+    account = session.exec(
+        select(Account).where(Account.edition_id == edition.id)
+    ).one()
+    assert account.role is Role.COORDINATOR
+    assert account.auth_method == "password"
+
+    codes = [
+        d.code
+        for d in session.exec(
+            select(DayPart).where(DayPart.edition_id == edition.id)
+        )
+    ]
+    assert set(codes) == {"MATIN", "APRES_MIDI", "SOIREE"}
+
+
+def test_no_day_parts_flag(session):
+    edition = run(_args(no_day_parts=True), session)
+    assert (
+        session.exec(
+            select(DayPart).where(DayPart.edition_id == edition.id)
+        ).all()
+        == []
+    )
+
+
+def test_rejects_short_password(session):
+    with pytest.raises(SystemExit):
+        run(_args(password="court"), session)
+
+
+def test_rejects_end_before_start(session):
+    with pytest.raises(SystemExit):
+        run(_args(start="2027-07-04", end="2027-07-01"), session)