First commite

cv/services/dowload/base.py

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+from __future__ import annotations
+
+from io import BytesIO
+from typing import Any, Dict, Protocol
+
+
+class ProfileSerializer:
+    """Сериализатор данных профиля для рендереров."""
+
+    def serialize(self, profile) -> Dict[str, Any]:
+        return {
+            "full_name": profile.full_name,
+            "role": getattr(profile, "role", ""),
+            "summary": getattr(profile, "summary", ""),
+            "location": getattr(profile, "location", ""),
+            "languages": getattr(profile, "languages", []) or [],
+            "contacts": {
+                "email": getattr(profile, "email", ""),
+                "phone": getattr(profile, "phone", ""),
+                "telegram": getattr(profile, "telegram", ""),
+            },
+            "experience": list(profile.experience.all()),
+            "skills_map": list(profile.skills_map.all()),
+        }
+
+
+class Renderer(Protocol):
+    def render(self, profile) -> BytesIO: ...
+
+