Seed : foyers fixture dev + codes stables dans dev hints

- seed.py : 3 foyers avec codes fixes (DEVTEST2/3/4, RS/RP/PRO)
  insérés avant les 363 réels ; existing_codes pré-chargé → zéro collision
- page citizen : dev hint mis à jour avec les 3 mêmes codes + profils
- CLAUDE.md : reformaté en guide de session

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/seed.py

@@ -72,12 +72,21 @@ async def seed():
         commune_admin.communes.append(commune)
         db.add(commune_admin)
 
+        # ── Dev fixture households (codes fixes, affichés dans les dev hints) ──
+        DEV_FIXTURES = [
+            {"identifier": "[DEV] Foyer RS 60m³",  "status": "RS",  "volume_m3": 60.0,  "price_paid_eur": 140.0, "auth_code": "DEVTEST2"},
+            {"identifier": "[DEV] Foyer RP 120m³", "status": "RP",  "volume_m3": 120.0, "price_paid_eur": 265.0, "auth_code": "DEVTEST3"},
+            {"identifier": "[DEV] Foyer PRO 350m³","status": "PRO", "volume_m3": 350.0, "price_paid_eur": 680.0, "auth_code": "DEVTEST4"},
+        ]
+        existing_codes = {f["auth_code"] for f in DEV_FIXTURES}
+        for fixture in DEV_FIXTURES:
+            db.add(Household(commune_id=commune.id, **fixture))
+
         # Import households from Eau2018.xls
         book = xlrd.open_workbook(XLS_PATH)
         sheet = book.sheet_by_name("CALCULS")
         nb_hab = 363
 
-        existing_codes = set()
         for r in range(1, nb_hab + 1):
             name = sheet.cell_value(r, 0)
             status = sheet.cell_value(r, 3)
@@ -174,10 +183,11 @@ async def seed():
             vote_count += 1
 
         await db.commit()
-        print(f"Seeded: commune 'saou', {nb_hab} households, {vote_count} votes")
+        print(f"Seeded: commune 'saou', {nb_hab} + 3 fixture households, {vote_count} votes")
         print(f"  Published curve: vinf={ref_vinf}, p0={ref_p0:.3f}")
         print(f"  Super admin: superadmin@sejeteralo.fr / superadmin")
         print(f"  Commune admin Saou: saou@sejeteralo.fr / saou2024")
+        print(f"  Dev fixtures: DEVTEST2 (RS 60m³) · DEVTEST3 (RP 120m³) · DEVTEST4 (PRO 350m³)")
 
 
 if __name__ == "__main__":