big update i guess

backend/main.py

@@ -7,6 +7,7 @@ import uvicorn
 from fastapi import FastAPI, HTTPException
 from fastapi.responses import FileResponse
 from fastapi.staticfiles import StaticFiles
+from sqlalchemy import text
 
 sys.path.insert(0, str(Path(__file__).parent))
 
@@ -18,6 +19,21 @@ logging.basicConfig(level=logging.INFO)
 # Create DB tables on startup
 Base.metadata.create_all(bind=engine)
 
+# Run column migrations for new fields (safe: only adds if not exists)
+def _migrate():
+    with engine.connect() as conn:
+        # Add week_start_day to user_settings if not present
+        try:
+            conn.execute(text(
+                "ALTER TABLE user_settings ADD COLUMN week_start_day VARCHAR(10) DEFAULT 'monday'"
+            ))
+            conn.commit()
+            logging.info("Migration: added week_start_day column")
+        except Exception:
+            pass  # Column already exists
+
+_migrate()
+
 app = FastAPI(title="Calendarr", docs_url=None, redoc_url=None)
 
 app.include_router(auth_router.router, prefix="/api/auth", tags=["auth"])

backend/models.py

@@ -60,6 +60,7 @@ class UserSettings(Base):
     id = Column(Integer, primary_key=True, index=True)
     user_id = Column(Integer, ForeignKey("users.id"), unique=True, nullable=False)
     default_view = Column(String(20), default="month")
+    week_start_day = Column(String(10), default="monday")
     primary_color = Column(String(7), default="#4285f4")
     accent_color = Column(String(7), default="#ea4335")
     today_color = Column(String(7), default="#4285f4")

backend/routers/profile_router.py

@@ -6,7 +6,7 @@ from typing import Optional
 import pyotp
 import qrcode
 from fastapi import APIRouter, Depends, File, HTTPException, UploadFile
-from fastapi.responses import FileResponse
+from fastapi.responses import FileResponse, Response
 from PIL import Image
 from pydantic import BaseModel
 from sqlalchemy.orm import Session
@@ -80,10 +80,19 @@ async def upload_avatar(
     if len(data) > MAX_AVATAR_SIZE:
         raise HTTPException(400, "Datei zu groß (max. 5 MB)")
 
-    # Resize to 256x256
+    # Resize to 512x512 square
     img = Image.open(io.BytesIO(data))
     img = img.convert("RGB")
-    img.thumbnail((512, 512))
+    # Use resize instead of thumbnail to ensure exact dimensions
+    # If already cropped (square), this just resizes; otherwise fit to 512x512
+    w, h = img.size
+    if w != h:
+        # Crop to square center
+        side = min(w, h)
+        left = (w - side) // 2
+        top = (h - side) // 2
+        img = img.crop((left, top, left + side, top + side))
+    img = img.resize((512, 512), Image.LANCZOS)
 
     filename = f"user_{current_user.id}.jpg"
     path = AVATAR_DIR / filename
@@ -101,7 +110,11 @@ def get_avatar(current_user: models.User = Depends(get_current_user)):
     path = AVATAR_DIR / current_user.avatar_filename
     if not path.exists():
         raise HTTPException(404, "Kein Profilbild")
-    return FileResponse(str(path), media_type="image/jpeg")
+    return FileResponse(
+        str(path),
+        media_type="image/jpeg",
+        headers={"Cache-Control": "no-cache, no-store, must-revalidate"},
+    )
 
 
 @router.get("/avatar/{user_id}")

backend/routers/settings_router.py

@@ -13,6 +13,7 @@ router = APIRouter()
 
 class SettingsUpdate(BaseModel):
     default_view: Optional[str] = None
+    week_start_day: Optional[str] = None
     primary_color: Optional[str] = None
     accent_color: Optional[str] = None
     today_color: Optional[str] = None
@@ -22,6 +23,7 @@ class SettingsUpdate(BaseModel):
 def _settings_dict(s: models.UserSettings) -> dict:
     return {
         "default_view": s.default_view,
+        "week_start_day": s.week_start_day or "monday",
         "primary_color": s.primary_color,
         "accent_color": s.accent_color,
         "today_color": s.today_color,