refactor: update module docstrings for clarity and consistency

backend/app/api/auth.py

@@ -1,3 +1,5 @@
+"""Authentication bootstrap endpoints for the Mission Control API."""
+
 from __future__ import annotations
 
 from fastapi import APIRouter, Depends, HTTPException, status
@@ -6,10 +8,12 @@ from app.core.auth import AuthContext, get_auth_context
 from app.schemas.users import UserRead
 
 router = APIRouter(prefix="/auth", tags=["auth"])
+AUTH_CONTEXT_DEP = Depends(get_auth_context)
 
 
 @router.post("/bootstrap", response_model=UserRead)
-async def bootstrap_user(auth: AuthContext = Depends(get_auth_context)) -> UserRead:
+async def bootstrap_user(auth: AuthContext = AUTH_CONTEXT_DEP) -> UserRead:
+    """Return the authenticated user profile from token claims."""
     if auth.actor_type != "user" or auth.user is None:
         raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED)
     return UserRead.model_validate(auth.user)