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/schemas/decision.py

@@ -0,0 +1,91 @@
+from __future__ import annotations
+
+from datetime import datetime
+from uuid import UUID
+
+from pydantic import BaseModel, ConfigDict, Field
+
+
+# ── Decision ─────────────────────────────────────────────────────
+
+
+class DecisionStepCreate(BaseModel):
+    """Payload for creating a step within a decision process."""
+
+    step_order: int = Field(..., ge=0)
+    step_type: str = Field(..., max_length=32, description="qualification, review, vote, execution, reporting")
+    title: str | None = Field(default=None, max_length=256)
+    description: str | None = None
+
+
+class DecisionStepOut(BaseModel):
+    """Full decision step representation."""
+
+    model_config = ConfigDict(from_attributes=True)
+
+    id: UUID
+    decision_id: UUID
+    step_order: int
+    step_type: str
+    title: str | None = None
+    description: str | None = None
+    status: str
+    vote_session_id: UUID | None = None
+    outcome: str | None = None
+    created_at: datetime
+
+
+class DecisionCreate(BaseModel):
+    """Payload for creating a new decision."""
+
+    title: str = Field(..., min_length=1, max_length=256)
+    description: str | None = None
+    context: str | None = None
+    decision_type: str = Field(..., max_length=64, description="runtime_upgrade, document_change, mandate_vote, custom")
+    voting_protocol_id: UUID | None = None
+
+
+class DecisionUpdate(BaseModel):
+    """Partial update for a decision."""
+
+    title: str | None = Field(default=None, max_length=256)
+    description: str | None = None
+    status: str | None = Field(default=None, max_length=32)
+    voting_protocol_id: UUID | None = None
+
+
+class DecisionOut(BaseModel):
+    """Full decision representation returned by the API."""
+
+    model_config = ConfigDict(from_attributes=True)
+
+    id: UUID
+    title: str
+    description: str | None = None
+    context: str | None = None
+    decision_type: str
+    status: str
+    voting_protocol_id: UUID | None = None
+    created_by_id: UUID | None = None
+    created_at: datetime
+    updated_at: datetime
+    steps: list[DecisionStepOut] = Field(default_factory=list)
+
+
+class DecisionAdvanceOut(BaseModel):
+    """Output after advancing a decision through its workflow."""
+
+    model_config = ConfigDict(from_attributes=True)
+
+    id: UUID
+    title: str
+    description: str | None = None
+    context: str | None = None
+    decision_type: str
+    status: str
+    voting_protocol_id: UUID | None = None
+    created_by_id: UUID | None = None
+    created_at: datetime
+    updated_at: datetime
+    steps: list[DecisionStepOut] = Field(default_factory=list)
+    message: str = Field(..., description="Message decrivant l'avancement effectue")