feat(auth): add bearer current user dependency

apps/api/app/api/routes/auth_simple.py

@@ -5,6 +5,7 @@ The route layer is intentionally thin: repository construction lives in
 app.dependencies and authentication behavior lives in application use cases.
 """
 
+from app.auth import AuthenticatedUser, get_current_user
 from app.config import settings
 from app.dependencies import get_user_repository
 from fastapi import APIRouter, Depends, HTTPException, status
@@ -49,6 +50,14 @@ class LoginResponse(BaseModel):
     expires_in: int
 
 
+class CurrentUserResponse(BaseModel):
+    user_id: str
+    email: str
+    username: str
+    display_name: str
+    email_verified: bool
+
+
 @router.post("/register", response_model=RegisterResponse, status_code=status.HTTP_201_CREATED)
 async def register(
     request: RegisterRequest,
@@ -103,11 +112,17 @@ async def login(
     )
 
 
-@router.get("/me")
-async def get_current_user_info():
-    raise HTTPException(
-        status_code=status.HTTP_501_NOT_IMPLEMENTED,
-        detail="/auth/me requires bearer-token dependency integration",
+@router.get("/me", response_model=CurrentUserResponse)
+async def get_current_user_info(
+    authenticated_user: AuthenticatedUser = Depends(get_current_user),
+):
+    user = authenticated_user.user
+    return CurrentUserResponse(
+        user_id=user.id,
+        email=user.email,
+        username=user.username,
+        display_name=user.display_name,
+        email_verified=user.email_verified,
     )