Sprint 1 : scaffolding complet de Glibredecision

Plateforme de decisions collectives pour Duniter/G1.
Backend FastAPI async + PostgreSQL (14 tables, 8 routers, 6 services,
moteur de vote avec formule d'inertie WoT/Smith/TechComm).
Frontend Nuxt 4 + Nuxt UI v3 + Pinia (9 pages, 5 stores).
Infrastructure Docker + Woodpecker CI + Traefik.
Documentation technique et utilisateur (15 fichiers).
Seed : Licence G1, Engagement Forgeron v2.0.0, 4 protocoles de vote.
30 tests unitaires (formules, mode params, vote nuance) -- tous verts.

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

backend/app/schemas/mandate.py

@@ -0,0 +1,70 @@
+from __future__ import annotations
+
+from datetime import datetime
+from uuid import UUID
+
+from pydantic import BaseModel, ConfigDict, Field
+
+
+# ── Mandate Step ─────────────────────────────────────────────────
+
+
+class MandateStepCreate(BaseModel):
+    """Payload for creating a step within a mandate process."""
+
+    step_order: int = Field(..., ge=0)
+    step_type: str = Field(
+        ...,
+        max_length=32,
+        description="formulation, candidacy, vote, assignment, reporting, completion, revocation",
+    )
+    title: str | None = Field(default=None, max_length=256)
+    description: str | None = None
+
+
+class MandateStepOut(BaseModel):
+    """Full mandate step representation."""
+
+    model_config = ConfigDict(from_attributes=True)
+
+    id: UUID
+    mandate_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
+
+
+# ── Mandate ──────────────────────────────────────────────────────
+
+
+class MandateCreate(BaseModel):
+    """Payload for creating a new mandate."""
+
+    title: str = Field(..., min_length=1, max_length=256)
+    description: str | None = None
+    mandate_type: str = Field(..., max_length=64, description="techcomm, smith, custom")
+    decision_id: UUID | None = None
+
+
+class MandateOut(BaseModel):
+    """Full mandate representation returned by the API."""
+
+    model_config = ConfigDict(from_attributes=True)
+
+    id: UUID
+    title: str
+    description: str | None = None
+    mandate_type: str
+    status: str
+    mandatee_id: UUID | None = None
+    decision_id: UUID | None = None
+    starts_at: datetime | None = None
+    ends_at: datetime | None = None
+    created_at: datetime
+    updated_at: datetime
+    steps: list[MandateStepOut] = Field(default_factory=list)