sciagent code + Gitea Actions CI/CD

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

be0/src/application/identity/dto.py

@@ -0,0 +1,24 @@
+"""Application DTOs for Identity — the inputs/outputs of use cases (not API schemas)."""
+
+from __future__ import annotations
+
+from dataclasses import dataclass
+
+from src.domain.identity.entities import User
+
+
+@dataclass(frozen=True)
+class LoginCommand:
+    email: str
+    password: str
+    client_ip: str
+
+
+@dataclass(frozen=True)
+class AuthenticatedUser:
+    """Result of a successful authentication. The API layer assembles the public
+    response (incl. staff profile) from this + a profile read."""
+
+    user: User
+    roles: list[str]
+    access_token: str