v3 : socle Rust (moteur pur, accès trustinWallet, serveur) ; maquette Nuxt rangée dans maquette/

- crates/ld-engine : formule inertielle (parité avec la maquette, garde C),
  coquille / changement de fond, assistant d'édition à règles, composition
  d'un document sous vote permanent (adoptions, aperçus, rivales).
- crates/trustin-access : qui voit, qui ouvre, qui gère les accès.
- crates/ld-server : API axum + SQLite, connexion Ğ1 (client OAuth2 de
  connect.monnaie-libre.fr), invitations, entrée en vigueur automatique,
  signalements de contradiction, traductions éditoriales, publication git,
  taille de la toile lue sur la chaîne.
- seeds/acte-engagement-certification.json : 33 articles, fr + en + es ;
  en vigueur : préambule, E1, E2 (seed a minima).
- maquette/ : frontend, backend et docker v2 déplacés tels quels.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

maquette/backend/app/models/protocol.py

@@ -0,0 +1,52 @@
+import uuid
+from datetime import datetime
+
+from sqlalchemy import String, Integer, Float, Boolean, DateTime, ForeignKey, Text, Uuid, func
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+
+from app.database import Base
+
+
+class FormulaConfig(Base):
+    __tablename__ = "formula_configs"
+
+    id: Mapped[uuid.UUID] = mapped_column(Uuid, primary_key=True, default=uuid.uuid4)
+    name: Mapped[str] = mapped_column(String(128), nullable=False)
+    description: Mapped[str | None] = mapped_column(Text)
+
+    # WoT threshold params
+    duration_days: Mapped[int] = mapped_column(Integer, default=30)
+    majority_pct: Mapped[int] = mapped_column(Integer, default=50)
+    base_exponent: Mapped[float] = mapped_column(Float, default=0.1)
+    gradient_exponent: Mapped[float] = mapped_column(Float, default=0.2)
+    constant_base: Mapped[float] = mapped_column(Float, default=0.0)
+
+    # Smith criterion
+    smith_exponent: Mapped[float | None] = mapped_column(Float)
+
+    # TechComm criterion
+    techcomm_exponent: Mapped[float | None] = mapped_column(Float)
+
+    # Nuanced vote
+    nuanced_min_participants: Mapped[int | None] = mapped_column(Integer)
+    nuanced_threshold_pct: Mapped[int | None] = mapped_column(Integer)
+
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())
+
+    protocols: Mapped[list["VotingProtocol"]] = relationship(back_populates="formula_config")
+
+
+class VotingProtocol(Base):
+    __tablename__ = "voting_protocols"
+
+    id: Mapped[uuid.UUID] = mapped_column(Uuid, primary_key=True, default=uuid.uuid4)
+    name: Mapped[str] = mapped_column(String(128), nullable=False)
+    description: Mapped[str | None] = mapped_column(Text)
+    vote_type: Mapped[str] = mapped_column(String(32), nullable=False)  # binary, nuanced
+    formula_config_id: Mapped[uuid.UUID] = mapped_column(ForeignKey("formula_configs.id"), nullable=False)
+    organization_id: Mapped[uuid.UUID | None] = mapped_column(ForeignKey("organizations.id"), nullable=True, index=True)
+    mode_params: Mapped[str | None] = mapped_column(String(64))  # e.g. "D30M50B.1G.2T.1"
+    is_meta_governed: Mapped[bool] = mapped_column(Boolean, default=False)
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())
+
+    formula_config: Mapped["FormulaConfig"] = relationship(back_populates="protocols")