Add initial project files

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/app/routers/users.py

@@ -0,0 +1,47 @@
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.dependencies import get_db, get_current_user
+from app.models.user import User
+from app.schemas.user import UserResponse, UserUpdate, PasswordChange
+from app.utils.security import verify_password, hash_password
+
+router = APIRouter(prefix="/api/users", tags=["users"])
+
+
+@router.get("/me", response_model=UserResponse)
+async def get_me(current_user: User = Depends(get_current_user)):
+    return current_user
+
+
+@router.put("/me", response_model=UserResponse)
+async def update_me(
+    body: UserUpdate,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    if body.display_name is not None:
+        current_user.display_name = body.display_name
+    if body.timezone is not None:
+        current_user.timezone = body.timezone
+
+    async with db.begin():
+        db.add(current_user)
+
+    await db.refresh(current_user)
+    return current_user
+
+
+@router.put("/me/password", status_code=status.HTTP_204_NO_CONTENT)
+async def change_password(
+    body: PasswordChange,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    if not verify_password(body.current_password, current_user.password_hash):
+        raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail="Current password is incorrect")
+
+    current_user.password_hash = hash_password(body.new_password)
+
+    async with db.begin():
+        db.add(current_user)