Retrait des compétences ; disponibilités en fenêtres horaires libres

Compétences supprimées de bout en bout :
- tables `skill`, `volunteer_skill`, `shift_required_skill` ;
- `Volunteer.skill_codes`, `Shift.required_skill_codes`, colonne `skills`
  de l'import, règle de validation `MISSING_REQUIRED_SKILL`, jeu de démo.

Disponibilités repensées : `Availability` passe de (`day_part_id`,
`status` tri-état) à une **fenêtre horaire libre** (`date`, `start_time`,
`end_time` ; `end <= start` ⇒ passe minuit), plusieurs par jour.
- Nouveaux endpoints `GET`/`PUT /editions/{id}/volunteers/{vid}/availability`
  (PUT = remplacement complet, COORDINATION) et
  `GET /editions/{id}/availability` (toute l'édition, pour la grille).
- `OUTSIDE_AVAILABILITY` (toujours WARNING) : compare le créneau à l'union
  des fenêtres du bénévole ce jour-là ; renvoie `date` + `uncovered_minutes`.
  `DayPart` ne sert plus qu'à la borne de « journée » du cumul 8 h.
- L'import ne gère plus les disponibilités (fenêtres saisies dans l'app) :
  `values.py` supprimé, mapping réduit à nom/email/téléphone/commentaire.

Migration 0007 (recrée `availability`). `AvailabilityStatus` supprimé.
158 tests, `alembic check` et `ruff` au vert. Front à suivre.

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

backend/tests/test_api_assignments.py

@@ -13,21 +13,21 @@ def _url(edition, suffix=""):
     return f"/editions/{edition.id}/assignments{suffix}"
 
 
-def _setup(session, edition, day_parts, *, available=True, skills=()):
+def _setup(session, edition, *, available=True):
     position = make_position(session, edition)
     shift = make_shift(
         session, edition, position, start=dt_at(10, 14), end=dt_at(10, 18)
     )
-    volunteer = make_volunteer(session, edition, email="v@ex.fr", skills=skills)
+    volunteer = make_volunteer(session, edition, email="v@ex.fr")
     if available:
         declare_available_all_day(
-            session, edition, volunteer, day_parts, dt.date(2026, 7, 10)
+            session, edition, volunteer, dt.date(2026, 7, 10)
         )
     return volunteer, shift
 
 
 def test_create_assignment_clean(client, edition, session, day_parts):
-    volunteer, shift = _setup(session, edition, day_parts)
+    volunteer, shift = _setup(session, edition)
     resp = client.post(
         _url(edition),
         json={"volunteer_id": str(volunteer.id), "shift_id": str(shift.id)},
@@ -40,32 +40,19 @@ def test_create_assignment_clean(client, edition, session, day_parts):
 
 
 def test_create_assignment_returns_warnings(client, edition, session, day_parts):
-    # Bénévole non déclaré disponible + compétence requise absente.
-    volunteer, shift = _setup(session, edition, day_parts, available=False)
-    position = make_position(session, edition, name="Régie")
-    shift_with_skill = make_shift(
-        session,
-        edition,
-        position,
-        start=dt_at(10, 14),
-        end=dt_at(10, 18),
-        skills=["SOUND"],
-    )
+    # Bénévole non déclaré disponible sur le créneau.
+    volunteer, shift = _setup(session, edition, available=False)
     resp = client.post(
         _url(edition),
-        json={
-            "volunteer_id": str(volunteer.id),
-            "shift_id": str(shift_with_skill.id),
-        },
+        json={"volunteer_id": str(volunteer.id), "shift_id": str(shift.id)},
     )
     assert resp.status_code == 201
     codes = {w["code"] for w in resp.json()["warnings"]}
-    assert "MISSING_REQUIRED_SKILL" in codes
     assert "OUTSIDE_AVAILABILITY" in codes
 
 
 def test_create_assignment_blocked_by_overlap(client, edition, session, day_parts):
-    volunteer, shift = _setup(session, edition, day_parts)
+    volunteer, shift = _setup(session, edition)
     assert client.post(
         _url(edition),
         json={"volunteer_id": str(volunteer.id), "shift_id": str(shift.id)},
@@ -94,7 +81,7 @@ def test_create_assignment_blocked_by_overlap(client, edition, session, day_part
 
 
 def test_create_duplicate_assignment_conflicts(client, edition, session, day_parts):
-    volunteer, shift = _setup(session, edition, day_parts)
+    volunteer, shift = _setup(session, edition)
     body = {"volunteer_id": str(volunteer.id), "shift_id": str(shift.id)}
     assert client.post(_url(edition), json=body).status_code == 201
     resp = client.post(_url(edition), json=body)
@@ -112,7 +99,7 @@ def test_assignment_wrong_edition_is_422(client, edition, session, day_parts):
     session.commit()
     session.refresh(other)
     stranger = make_volunteer(session, other, email="s@ex.fr")
-    _, shift = _setup(session, edition, day_parts)
+    _, shift = _setup(session, edition)
 
     resp = client.post(
         _url(edition),
@@ -123,7 +110,7 @@ def test_assignment_wrong_edition_is_422(client, edition, session, day_parts):
 
 
 def test_validate_endpoint_does_not_persist(client, edition, session, day_parts):
-    volunteer, shift = _setup(session, edition, day_parts, available=False)
+    volunteer, shift = _setup(session, edition, available=False)
     resp = client.post(
         _url(edition, "/validate"),
         json={"volunteer_id": str(volunteer.id), "shift_id": str(shift.id)},
@@ -138,7 +125,7 @@ def test_validate_endpoint_does_not_persist(client, edition, session, day_parts)
 def test_patch_locked_keeps_assignment_and_returns_warnings(
     client, edition, session, day_parts
 ):
-    volunteer, shift = _setup(session, edition, day_parts, available=False)
+    volunteer, shift = _setup(session, edition, available=False)
     aid = client.post(
         _url(edition),
         json={"volunteer_id": str(volunteer.id), "shift_id": str(shift.id)},
@@ -153,7 +140,7 @@ def test_patch_locked_keeps_assignment_and_returns_warnings(
 
 
 def test_delete_assignment(client, edition, session, day_parts):
-    volunteer, shift = _setup(session, edition, day_parts)
+    volunteer, shift = _setup(session, edition)
     aid = client.post(
         _url(edition),
         json={"volunteer_id": str(volunteer.id), "shift_id": str(shift.id)},