Initial commit: Rentman Clone - Phase 0-6 (T001-T023)

Completed:
- Phase 0: Project Setup (T001-T003) - Docker Compose, FastAPI skeleton, React SPA
- Phase 1: Auth System (T004-T008) - DB models, JWT auth, RBAC middleware, user management
- Phase 2: Contacts & Tags (T009-T011) - CRUD API + UI
- Phase 3: Equipment Catalog (T012-T014) - Models, API, UI with barcode/QR
- Phase 4: Crew Management (T015-T017) - Models, availability, UI
- Phase 5: Vehicle Fleet (T018-T020) - Models, assignments, UI
- Phase 6: Projects (T021-T023) - Project hierarchy models, CRUD API, list/detail UI

backend/app/models/role.py

@@ -0,0 +1,28 @@
+"""Role model for RBAC."""
+
+import uuid
+
+from sqlalchemy import String, ForeignKey, JSON
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+
+from app.db.base import Base
+
+
+class Role(Base):
+    """Represents a role with permissions within an account."""
+
+    __tablename__ = "roles"
+
+    id: Mapped[str] = mapped_column(
+        String(36), primary_key=True, default=lambda: str(uuid.uuid4())
+    )
+    account_id: Mapped[str] = mapped_column(
+        String(36), ForeignKey("accounts.id", ondelete="CASCADE"), nullable=False
+    )
+    name: Mapped[str] = mapped_column(String(100), nullable=False)
+    description: Mapped[str | None] = mapped_column(String(500), nullable=True)
+    permissions: Mapped[list] = mapped_column(JSON, nullable=False, default=list)
+
+    # Relationships
+    account: Mapped["Account"] = relationship("Account", back_populates="roles")
+    users: Mapped[list["User"]] = relationship("User", back_populates="role")