Switch console file fields to File download URLs

Replace presigned URL string fields (logoUrl, fileUrl, ndaFileName,
etc.) with nested File references resolved through /api/files/v1/.
Update console Relay queries and e2e coverage accordingly.

Route NDA upload through filemanager.PutFile and return stable IAM
org logo URLs for consistency with the files API.

Signed-off-by: Ludovic Vielle <ludovic@probo.com>

pkg/server/api/console/v1/file_loader.go

@@ -0,0 +1,44 @@
+// Copyright (c) 2026 Probo Inc <hello@probo.com>.
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+package console_v1
+
+import (
+	"context"
+	"errors"
+
+	"github.com/vikstrous/dataloadgen"
+	"go.gearno.de/kit/log"
+	"go.probo.inc/probo/pkg/gid"
+	"go.probo.inc/probo/pkg/server/api/console/v1/dataloader"
+	"go.probo.inc/probo/pkg/server/api/console/v1/types"
+	"go.probo.inc/probo/pkg/server/gqlutils"
+)
+
+func (r *Resolver) loadFile(ctx context.Context, fileID gid.GID) (*types.File, error) {
+	loaders := dataloader.FromContext(ctx)
+
+	file, err := loaders.File.Load(ctx, fileID)
+	if err != nil {
+		if errors.Is(err, dataloadgen.ErrNotFound) {
+			return nil, gqlutils.NotFound(ctx, err)
+		}
+
+		r.logger.ErrorCtx(ctx, "cannot load file", log.Error(err))
+
+		return nil, gqlutils.Internal(ctx)
+	}
+
+	return types.NewFile(file, r.baseURL), nil
+}