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/schemas/__init__.py

@@ -0,0 +1 @@
+from app.schemas.schemas import *  # noqa: F401, F403

backend/app/schemas/schemas.py

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+"""Pydantic schemas for API request/response validation."""
+
+from datetime import datetime
+from pydantic import BaseModel, Field
+
+
+# ── Auth ──
+
+class AdminLogin(BaseModel):
+    email: str
+    password: str
+
+
+class CitizenVerify(BaseModel):
+    commune_slug: str
+    auth_code: str
+
+
+class Token(BaseModel):
+    access_token: str
+    token_type: str = "bearer"
+    role: str
+    commune_slug: str | None = None
+
+
+# ── Commune ──
+
+class CommuneCreate(BaseModel):
+    name: str
+    slug: str
+    description: str = ""
+
+
+class CommuneUpdate(BaseModel):
+    name: str | None = None
+    description: str | None = None
+    is_active: bool | None = None
+
+
+class CommuneOut(BaseModel):
+    id: int
+    name: str
+    slug: str
+    description: str
+    is_active: bool
+    created_at: datetime
+
+    model_config = {"from_attributes": True}
+
+
+# ── TariffParams ──
+
+class TariffParamsUpdate(BaseModel):
+    abop: float | None = None
+    abos: float | None = None
+    recettes: float | None = None
+    pmax: float | None = None
+    vmax: float | None = None
+
+
+class TariffParamsOut(BaseModel):
+    abop: float
+    abos: float
+    recettes: float
+    pmax: float
+    vmax: float
+
+    model_config = {"from_attributes": True}
+
+
+# ── Household ──
+
+class HouseholdOut(BaseModel):
+    id: int
+    identifier: str
+    status: str
+    volume_m3: float
+    price_paid_eur: float
+    auth_code: str
+    has_voted: bool
+
+    model_config = {"from_attributes": True}
+
+
+class HouseholdStats(BaseModel):
+    total: int
+    rs_count: int
+    rp_count: int
+    pro_count: int
+    total_volume: float
+    avg_volume: float
+    median_volume: float
+    voted_count: int
+
+
+class ImportPreview(BaseModel):
+    valid_rows: int
+    errors: list[str]
+    sample: list[dict]
+
+
+class ImportResult(BaseModel):
+    created: int
+    errors: list[str]
+
+
+# ── Tariff Compute ──
+
+class TariffComputeRequest(BaseModel):
+    commune_slug: str
+    vinf: float = Field(ge=0)
+    a: float = Field(ge=0, le=1)
+    b: float = Field(ge=0, le=1)
+    c: float = Field(ge=0, le=1)
+    d: float = Field(ge=0, le=1)
+    e: float = Field(ge=0, le=1)
+
+
+class ImpactRowOut(BaseModel):
+    volume: float
+    old_price: float
+    new_price_rp: float
+    new_price_rs: float
+
+
+class TariffComputeResponse(BaseModel):
+    p0: float
+    curve_volumes: list[float]
+    curve_prices_m3: list[float]
+    curve_bills_rp: list[float]
+    curve_bills_rs: list[float]
+    impacts: list[ImpactRowOut]
+
+
+# ── Vote ──
+
+class VoteCreate(BaseModel):
+    vinf: float = Field(ge=0)
+    a: float = Field(ge=0, le=1)
+    b: float = Field(ge=0, le=1)
+    c: float = Field(ge=0, le=1)
+    d: float = Field(ge=0, le=1)
+    e: float = Field(ge=0, le=1)
+
+
+class VoteOut(BaseModel):
+    id: int
+    household_id: int
+    vinf: float
+    a: float
+    b: float
+    c: float
+    d: float
+    e: float
+    computed_p0: float | None
+    submitted_at: datetime
+    is_active: bool
+
+    model_config = {"from_attributes": True}
+
+
+class MedianOut(BaseModel):
+    vinf: float
+    a: float
+    b: float
+    c: float
+    d: float
+    e: float
+    computed_p0: float
+    vote_count: int
+
+
+# ── Admin User ──
+
+class AdminUserCreate(BaseModel):
+    email: str
+    password: str
+    full_name: str = ""
+    role: str = "commune_admin"
+    commune_slugs: list[str] = []
+
+
+class AdminUserOut(BaseModel):
+    id: int
+    email: str
+    full_name: str
+    role: str
+
+    model_config = {"from_attributes": True}
+
+
+# ── Content ──
+
+class ContentUpdate(BaseModel):
+    title: str
+    body_markdown: str
+
+
+class ContentOut(BaseModel):
+    slug: str
+    title: str
+    body_markdown: str
+    updated_at: datetime
+
+    model_config = {"from_attributes": True}