Initial commit: SejeteralO water tarification platform

Full-stack app for participatory water pricing using Bezier curves.
- Backend: FastAPI + SQLAlchemy + SQLite with JWT auth
- Frontend: Nuxt 4 + TypeScript with interactive SVG editor
- Math engine: cubic Bezier tarification with Cardano solver
- Admin: commune management, household import, vote monitoring, CMS
- Citizen: interactive curve editor, vote submission
- Docker-compose deployment ready

Includes fixes for:
- Impact table snake_case/camelCase property mismatch
- CMS content backend API + frontend editor (was stub)
- Admin route protection middleware
- Public content display on commune page
- Vote confirmation page link fix

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

backend/app/models/models.py

@@ -0,0 +1,120 @@
+"""SQLAlchemy ORM models."""
+
+from datetime import datetime
+
+from sqlalchemy import (
+    Column, Integer, String, Float, Boolean, DateTime, ForeignKey, Text, Table,
+    UniqueConstraint,
+)
+from sqlalchemy.orm import relationship
+
+from app.database import Base
+
+
+# Many-to-many: admin users <-> communes
+admin_commune_table = Table(
+    "admin_commune",
+    Base.metadata,
+    Column("admin_id", Integer, ForeignKey("admin_users.id"), primary_key=True),
+    Column("commune_id", Integer, ForeignKey("communes.id"), primary_key=True),
+)
+
+
+class Commune(Base):
+    __tablename__ = "communes"
+
+    id = Column(Integer, primary_key=True, index=True)
+    name = Column(String(200), nullable=False)
+    slug = Column(String(200), unique=True, nullable=False, index=True)
+    description = Column(Text, default="")
+    is_active = Column(Boolean, default=True)
+    created_at = Column(DateTime, default=datetime.utcnow)
+
+    tariff_params = relationship("TariffParams", back_populates="commune", uselist=False)
+    households = relationship("Household", back_populates="commune")
+    votes = relationship("Vote", back_populates="commune")
+    contents = relationship("CommuneContent", back_populates="commune")
+    admins = relationship("AdminUser", secondary=admin_commune_table, back_populates="communes")
+
+
+class TariffParams(Base):
+    __tablename__ = "tariff_params"
+
+    id = Column(Integer, primary_key=True, index=True)
+    commune_id = Column(Integer, ForeignKey("communes.id"), unique=True, nullable=False)
+    abop = Column(Float, default=100.0)
+    abos = Column(Float, default=100.0)
+    recettes = Column(Float, default=75000.0)
+    pmax = Column(Float, default=20.0)
+    vmax = Column(Float, default=2100.0)
+
+    commune = relationship("Commune", back_populates="tariff_params")
+
+
+class Household(Base):
+    __tablename__ = "households"
+
+    id = Column(Integer, primary_key=True, index=True)
+    commune_id = Column(Integer, ForeignKey("communes.id"), nullable=False)
+    identifier = Column(String(200), nullable=False)
+    status = Column(String(10), nullable=False)  # RS, RP, PRO
+    volume_m3 = Column(Float, nullable=False)
+    price_paid_eur = Column(Float, default=0.0)
+    auth_code = Column(String(8), unique=True, nullable=False, index=True)
+    has_voted = Column(Boolean, default=False)
+
+    commune = relationship("Commune", back_populates="households")
+    votes = relationship("Vote", back_populates="household")
+
+    __table_args__ = (
+        UniqueConstraint("commune_id", "identifier", name="uq_household_commune_identifier"),
+    )
+
+
+class AdminUser(Base):
+    __tablename__ = "admin_users"
+
+    id = Column(Integer, primary_key=True, index=True)
+    email = Column(String(200), unique=True, nullable=False, index=True)
+    hashed_password = Column(String(200), nullable=False)
+    full_name = Column(String(200), default="")
+    role = Column(String(20), default="commune_admin")  # super_admin / commune_admin
+
+    communes = relationship("Commune", secondary=admin_commune_table, back_populates="admins")
+
+
+class Vote(Base):
+    __tablename__ = "votes"
+
+    id = Column(Integer, primary_key=True, index=True)
+    commune_id = Column(Integer, ForeignKey("communes.id"), nullable=False)
+    household_id = Column(Integer, ForeignKey("households.id"), nullable=False)
+    vinf = Column(Float, nullable=False)
+    a = Column(Float, nullable=False)
+    b = Column(Float, nullable=False)
+    c = Column(Float, nullable=False)
+    d = Column(Float, nullable=False)
+    e = Column(Float, nullable=False)
+    computed_p0 = Column(Float, nullable=True)
+    submitted_at = Column(DateTime, default=datetime.utcnow)
+    is_active = Column(Boolean, default=True)
+
+    commune = relationship("Commune", back_populates="votes")
+    household = relationship("Household", back_populates="votes")
+
+
+class CommuneContent(Base):
+    __tablename__ = "commune_contents"
+
+    id = Column(Integer, primary_key=True, index=True)
+    commune_id = Column(Integer, ForeignKey("communes.id"), nullable=False)
+    slug = Column(String(200), nullable=False)  # page identifier
+    title = Column(String(200), default="")
+    body_markdown = Column(Text, default="")
+    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+
+    commune = relationship("Commune", back_populates="contents")
+
+    __table_args__ = (
+        UniqueConstraint("commune_id", "slug", name="uq_content_commune_slug"),
+    )