This is the initial push of the outline of the life dashboard

backend/app/routers/weight.py

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+from datetime import date
+
+from fastapi import APIRouter, Depends, HTTPException, Query
+from pydantic import BaseModel
+from sqlalchemy import select
+from sqlalchemy.orm import Session
+
+from app.auth import get_current_user
+from app.database import get_db
+from app.models.weight import WeightEntry
+
+router = APIRouter(
+    prefix="/api/weight", tags=["weight"], dependencies=[Depends(get_current_user)]
+)
+
+
+class WeightCreate(BaseModel):
+    date: date
+    weight_lbs: float
+    body_fat_pct: float | None = None
+    notes: str | None = None
+
+
+class WeightRead(WeightCreate):
+    id: int
+
+    model_config = {"from_attributes": True}
+
+
+@router.get("", response_model=list[WeightRead])
+def list_weight(
+    from_date: date | None = Query(None, alias="from"),
+    to_date: date | None = Query(None, alias="to"),
+    db: Session = Depends(get_db),
+):
+    q = select(WeightEntry).order_by(WeightEntry.date.desc())
+    if from_date:
+        q = q.where(WeightEntry.date >= from_date)
+    if to_date:
+        q = q.where(WeightEntry.date <= to_date)
+    return db.scalars(q).all()
+
+
+@router.post("", response_model=WeightRead, status_code=201)
+def create_weight(body: WeightCreate, db: Session = Depends(get_db)):
+    entry = WeightEntry(**body.model_dump())
+    db.add(entry)
+    db.commit()
+    db.refresh(entry)
+    return entry
+
+
+@router.put("/{entry_id}", response_model=WeightRead)
+def update_weight(entry_id: int, body: WeightCreate, db: Session = Depends(get_db)):
+    entry = db.get(WeightEntry, entry_id)
+    if not entry:
+        raise HTTPException(status_code=404, detail="Entry not found")
+    for key, val in body.model_dump().items():
+        setattr(entry, key, val)
+    db.commit()
+    db.refresh(entry)
+    return entry
+
+
+@router.delete("/{entry_id}", status_code=204)
+def delete_weight(entry_id: int, db: Session = Depends(get_db)):
+    entry = db.get(WeightEntry, entry_id)
+    if not entry:
+        raise HTTPException(status_code=404, detail="Entry not found")
+    db.delete(entry)
+    db.commit()