Bénévole : retrait de la taille de t-shirt et du régime alimentaire

Champs `tshirt_size` et `diet` supprimés du modèle `Volunteer`, des schémas
d'API, de l'import CSV/Excel (mapping, suggestions, exécution) et du jeu de
démonstration. Énum `TshirtSize` et helper `parse_tshirt_size` supprimés.
Migration 0005. Clé i18n `import.row.invalid_tshirt_size` retirée.

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

backend/app/importing/service.py

@@ -12,7 +12,7 @@ from app.importing.schemas import (
     RowReport,
 )
 from app.importing.text import normalize, slug_code, split_skills
-from app.importing.values import parse_availability_cell, parse_tshirt_size
+from app.importing.values import parse_availability_cell
 from app.models import (
     Availability,
     DayPart,
@@ -29,8 +29,6 @@ _FIELD_HINTS: dict[str, tuple[str, ...]] = {
     "first_name": ("prenom", "first name", "firstname", "given name"),
     "last_name": ("nom", "last name", "lastname", "surname", "famille"),
     "phone": ("tel", "phone", "portable", "mobile", "gsm"),
-    "tshirt_size": ("tshirt", "t shirt", "taille", "shirt"),
-    "diet": ("regime", "alimentaire", "diet", "allergie"),
     "comment": ("commentaire", "remarque", "note", "precision"),
     "skills": ("competence", "skill", "habilitation", "brevet", "diplome"),
 }
@@ -82,7 +80,7 @@ def validate_mapping(
                 )
             )
 
-    for field in ("email", "phone", "tshirt_size", "diet", "comment", "skills"):
+    for field in ("email", "phone", "comment", "skills"):
         header = getattr(columns, field)
         if header and header not in headers:
             errors.append(
@@ -281,25 +279,8 @@ def run_import(
             volunteer.email = email_raw or None
         if columns.phone:
             volunteer.phone = (row.get(columns.phone) or "").strip() or None
-        if columns.diet:
-            volunteer.diet = (row.get(columns.diet) or "").strip() or None
         if columns.comment:
             volunteer.comment = (row.get(columns.comment) or "").strip() or None
-        if columns.tshirt_size:
-            raw_size = (row.get(columns.tshirt_size) or "").strip()
-            if raw_size:
-                size = parse_tshirt_size(raw_size)
-                if size is None:
-                    entry.issues.append(
-                        Issue(
-                            code="import.row.invalid_tshirt_size",
-                            severity="WARNING",
-                            field="tshirt_size",
-                            params={"value": raw_size},
-                        )
-                    )
-                else:
-                    volunteer.tshirt_size = size
 
         session.flush()