added multi user support, move api key to database

backend/app/routers/apikeys.py

@@ -0,0 +1,72 @@
+"""Programmatic API keys. Only admins may create, list, or revoke keys.
+
+A key authenticates via the ``X-API-Key`` header and acts as the admin who
+created it. The raw key is returned exactly once, at creation; afterwards only
+its prefix and hash are stored.
+"""
+
+from fastapi import APIRouter, Depends, Request
+from sqlalchemy import select
+from sqlalchemy.orm import Session as DbSession
+
+from .. import auth
+from ..auth import require_admin
+from ..database import get_db
+from ..errors import APIError
+from ..models import Admin, ApiKey
+from ..schemas import ApiKeyCreate, ApiKeyCreated, ApiKeyOut
+
+router = APIRouter(prefix="/apikeys", tags=["apikeys"])
+
+
+@router.get("", response_model=list[ApiKeyOut])
+def list_api_keys(_: Admin = Depends(require_admin), db: DbSession = Depends(get_db)):
+    return db.execute(select(ApiKey).order_by(ApiKey.id.desc())).scalars().all()
+
+
+@router.post("", response_model=ApiKeyCreated, status_code=201)
+def create_api_key(
+    payload: ApiKeyCreate,
+    request: Request,
+    admin: Admin = Depends(require_admin),
+    db: DbSession = Depends(get_db),
+):
+    raw = auth.generate_api_key()
+    key = ApiKey(
+        name=payload.name,
+        key_prefix=raw[:8],
+        key_hash=auth.hash_api_key(raw),
+        created_by=admin.username,
+    )
+    db.add(key)
+    db.commit()
+    db.refresh(key)
+    auth.record_log(
+        db,
+        username=admin.username,
+        action="create_api_key",
+        detail=f"Created API key '{key.name}' ({key.key_prefix}…)",
+        request=request,
+    )
+    return ApiKeyCreated(**ApiKeyOut.model_validate(key).model_dump(), key=raw)
+
+
+@router.delete("/{key_id}", status_code=204)
+def revoke_api_key(
+    key_id: int,
+    request: Request,
+    admin: Admin = Depends(require_admin),
+    db: DbSession = Depends(get_db),
+):
+    key = db.get(ApiKey, key_id)
+    if key is None:
+        raise APIError(status_code=404, detail=f"API key '{key_id}' not found")
+    key.revoked = True
+    db.commit()
+    auth.record_log(
+        db,
+        username=admin.username,
+        action="revoke_api_key",
+        detail=f"Revoked API key '{key.name}' ({key.key_prefix}…)",
+        request=request,
+    )