Store detector files as regular blobs (no LFS)

models/ember-iris/smoke-detector.onnx

@@ -1,3 +1 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:879049d739f1393783bacbe7969eb9bc85b5526bf349e471489cd1d59c08c4b5
-size 54
+SMOKE-RELAY-ONNX\nmodel=ember-iris\nrevision=2026.02\n

models/flare-sage/smoke-detector.onnx

@@ -1,3 +1,2 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:edee0de9f1b1af11257f30fe7dd005317f902da6f3d1db808fcce223293c049c
-size 50
+FLARE-SAGE-ONNX-PAYLOAD-v1
+zone-router-compatible