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/app/api/volunteers.py

@@ -6,7 +6,7 @@ from fastapi import APIRouter, Depends, HTTPException, Response, status
 from sqlalchemy.exc import IntegrityError
 from sqlmodel import Session, select
 
-from app.api._common import owned_or_404, replace_links, resolve_skills
+from app.api._common import owned_or_404, replace_links
 from app.api.deps import get_edition
 from app.api.schemas import VolunteerCreate, VolunteerRead, VolunteerUpdate
 from app.auth.deps import (
@@ -21,11 +21,9 @@ from app.models import (
     Edition,
     Position,
     Role,
-    Skill,
     Volunteer,
     VolunteerArtist,
     VolunteerPositionWish,
-    VolunteerSkill,
 )
 
 router = APIRouter(
@@ -41,16 +39,6 @@ def _ensure_can_read(account: Account, volunteer_id: uuid.UUID) -> None:
     raise HTTPException(status_code=403, detail={"code": "error.forbidden"})
 
 
-def _skill_codes(session: Session, volunteer_id: uuid.UUID) -> list[str]:
-    return sorted(
-        session.exec(
-            select(Skill.code)
-            .join(VolunteerSkill, VolunteerSkill.skill_id == Skill.id)
-            .where(VolunteerSkill.volunteer_id == volunteer_id)
-        )
-    )
-
-
 def _artist_ids(session: Session, volunteer_id: uuid.UUID) -> list[uuid.UUID]:
     return list(
         session.exec(
@@ -81,27 +69,11 @@ def _wished_position_ids(
 def _read(session: Session, volunteer: Volunteer) -> VolunteerRead:
     return VolunteerRead(
         **volunteer.model_dump(),
-        skill_codes=_skill_codes(session, volunteer.id),
         artist_ids=_artist_ids(session, volunteer.id),
         wished_position_ids=_wished_position_ids(session, volunteer.id),
     )
 
 
-def _set_skills(
-    session: Session, volunteer: Volunteer, codes: list[str]
-) -> None:
-    skills = resolve_skills(session, volunteer.edition_id, codes)
-    replace_links(
-        session,
-        VolunteerSkill,
-        filter_column=VolunteerSkill.volunteer_id,
-        filter_value=volunteer.id,
-        pairs=[
-            {"volunteer_id": volunteer.id, "skill_id": s.id} for s in skills
-        ],
-    )
-
-
 def _resolve_owned_ids(
     session: Session, model, edition_id: uuid.UUID, ids: list[uuid.UUID], code: str
 ) -> list[uuid.UUID]:
@@ -168,9 +140,7 @@ def create_volunteer(
 ) -> VolunteerRead:
     volunteer = Volunteer(
         edition_id=edition.id,
-        **payload.model_dump(
-            exclude={"skill_codes", "artist_ids", "wished_position_ids"}
-        ),
+        **payload.model_dump(exclude={"artist_ids", "wished_position_ids"}),
     )
     session.add(volunteer)
     try:
@@ -180,7 +150,6 @@ def create_volunteer(
         raise HTTPException(
             status_code=409, detail={"code": "volunteer.duplicate_email"}
         ) from exc
-    _set_skills(session, volunteer, payload.skill_codes)
     _set_artists(session, volunteer, payload.artist_ids)
     _set_wished_positions(session, volunteer, payload.wished_position_ids)
     session.commit()
@@ -224,7 +193,6 @@ def update_volunteer(
 ) -> VolunteerRead:
     volunteer = owned_or_404(session.get(Volunteer, volunteer_id), edition.id)
     changes = payload.model_dump(exclude_unset=True)
-    skill_codes = changes.pop("skill_codes", None)
     artist_ids = changes.pop("artist_ids", None)
     wished_position_ids = changes.pop("wished_position_ids", None)
     for field, value in changes.items():
@@ -236,8 +204,6 @@ def update_volunteer(
         raise HTTPException(
             status_code=409, detail={"code": "volunteer.duplicate_email"}
         ) from exc
-    if skill_codes is not None:
-        _set_skills(session, volunteer, skill_codes)
     if artist_ids is not None:
         _set_artists(session, volunteer, artist_ids)
     if wished_position_ids is not None:
@@ -256,7 +222,7 @@ def delete_volunteer(
 ) -> Response:
     volunteer = owned_or_404(session.get(Volunteer, volunteer_id), edition.id)
     # Effacement complet : la cascade base supprime disponibilités,
-    # affectations, liens de compétence et compte éventuel.
+    # affectations, vœux et compte éventuel.
     session.delete(volunteer)
     session.commit()
     return Response(status_code=status.HTTP_204_NO_CONTENT)