Document PlanCraft SFT initializer and OPD-only workflow

README.md

@@ -19,6 +19,18 @@ Use with the matching MCTD `github_release` code and Qwen3-1.7B.
   latent-SFT checkpoint, k=4, packaged as a portable run at
   `experiments/pretrained/alfworld/latent-sft-k4`. Wa remained fixed in that
   training. It supports evaluation and initialization of a **new** OPD run.
+- `plancraft-latent-sft-k8-20260910.tar.gz`: best checkpoint from
+  `20260910-154609-BJT--latent-sft--plancraft--k8--m1`, trained with a frozen
+  Qwen3-1.7B backbone and initialized Wa, updating the action head only.
+  Installs to `experiments/pretrained/plancraft/latent-sft-k8`, with matching
+  command embeddings and original training configuration. This initializer is
+  not compatible with a 7B backbone without a separately trained matching head.
+
+For PlanCraft, `python scripts/download_resources.py --environment plancraft`
+installs the initializer. The release's `bash scripts/plancraft_eight_gpu.sh`
+runs OPD only from it (one epoch, then best/final full-test evaluation).
+The teacher is a separately managed API service. Publication does not imply
+the in-progress 580-task SFT evaluation has completed.
 
 The portable run has minimal evaluation/configuration metadata and weights.
 It is not a full training-history archive: optimizer/scheduler/RNG state is