feat(backend): settings, upload media, seed données démo

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

backend/app/seed.py

@@ -1,2 +1,78 @@
+from datetime import date
+from sqlmodel import Session, select
+from app.database import engine
+import app.models  # noqa
+
+
 def run_seed():
-    pass
+    from app.models.garden import Garden, GardenCell, Measurement
+    from app.models.plant import PlantVariety
+    from app.models.planting import Planting, PlantingEvent
+    from app.models.task import Task
+
+    with Session(engine) as session:
+        if session.exec(select(Garden)).first():
+            return  # déjà seedé
+
+        jardin = Garden(
+            nom="Mon potager",
+            description="Potager principal plein sud",
+            type="plein_air",
+            exposition="S",
+            ombre="plein_soleil",
+            sol_type="limoneux",
+            grille_largeur=6,
+            grille_hauteur=4,
+        )
+        session.add(jardin)
+        session.flush()
+
+        for row in range(4):
+            for col in range(6):
+                session.add(GardenCell(
+                    garden_id=jardin.id,
+                    col=col, row=row,
+                    libelle=f"{chr(65 + row)}{col + 1}",
+                ))
+
+        session.add(Measurement(garden_id=jardin.id, temp_air=18.0, humidite_air=65.0))
+
+        tomate = PlantVariety(
+            nom_commun="Tomate", variete="Andine Cornue",
+            famille="Solanacées", type_plante="legume",
+            besoin_eau="fort", espacement_cm=60,
+            plantation_mois="4,5", recolte_mois="7,8,9",
+        )
+        courgette = PlantVariety(
+            nom_commun="Courgette", variete="Verte",
+            famille="Cucurbitacées", type_plante="legume",
+            besoin_eau="moyen", espacement_cm=80,
+            plantation_mois="5,6", recolte_mois="7,8",
+        )
+        salade = PlantVariety(
+            nom_commun="Laitue", variete="Batavia",
+            famille="Astéracées", type_plante="legume",
+            besoin_eau="moyen", espacement_cm=25,
+        )
+        session.add_all([tomate, courgette, salade])
+        session.flush()
+
+        p1 = Planting(
+            garden_id=jardin.id, variety_id=tomate.id,
+            date_plantation=date(2026, 5, 1), quantite=6, statut="en_cours",
+        )
+        p2 = Planting(
+            garden_id=jardin.id, variety_id=courgette.id,
+            date_plantation=date(2026, 5, 15), quantite=3, statut="prevu",
+        )
+        session.add_all([p1, p2])
+        session.flush()
+
+        session.add(PlantingEvent(planting_id=p1.id, type="arrosage", note="Arrosage du matin"))
+
+        session.add(Task(titre="Arroser les tomates", priorite="haute",
+                         statut="a_faire", garden_id=jardin.id))
+        session.add(Task(titre="Traiter contre les pucerons", priorite="normale", statut="a_faire"))
+        session.add(Task(titre="Préparer le compost", priorite="basse", statut="en_cours"))
+
+        session.commit()