Add source SD3 Medium distilled checkpoints

.gitattributes

@@ -1,4 +1,5 @@
 *.bin filter=lfs diff=lfs merge=lfs -text
+*.safetensors filter=lfs diff=lfs merge=lfs -text
 *.mil filter=lfs diff=lfs merge=lfs -text
 *.mlmodel filter=lfs diff=lfs merge=lfs -text
 *.mlpackage/** filter=lfs diff=lfs merge=lfs -text

README.md

@@ -20,6 +20,10 @@ on-device Stable Diffusion 3 Medium inference on iPhone.
 
 - `coremlsd3_2step/`: SD3 Medium two-step Core ML resources.
 - `coremlsd3_4step/`: SD3 Medium four-step Core ML resources.
+- `checkpoints/sd3-medium-2step.safetensors`: source two-step distilled
+  checkpoint used to build the two-step Core ML bundle.
+- `checkpoints/sd3-medium-4step.safetensors`: source four-step distilled
+  checkpoint used to build the four-step Core ML bundle.
 
 Each bundle is organized for MobileDiffuser's split MMDiT runtime:
 
@@ -59,6 +63,10 @@ git lfs pull
 If the `.mlmodelc` directories contain small pointer files instead of real model
 weights, LFS objects were not pulled successfully.
 
+The `.safetensors` checkpoints are also stored through LFS. They are provided so
+the Core ML bundles can be reproduced or re-converted with different splitting
+or quantization settings.
+
 ## Notes
 
 - These resources are intended for 512x512 generation.

checkpoints/sd3-medium-2step.safetensors

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c59a097b1ff4e60e4df2082ec013c781d18bc6bc6022da50f671f6710b437202
+size 8339883744

checkpoints/sd3-medium-4step.safetensors

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d8803033f2576eab9b5cd2e02c0c86b918a231d369b1ef66e0998bae7b2a8136
+size 8339883744