playbooks: repoint the four remaining live fv-ml1 targets

homepage-regroup, mog-sec-move-to-gpu0, pull-hf-repo and serve-qwen3.5-122b
all carried runnable 'scripts/elway ana-ml2 --playbook ...' instructions or
the old 10.250.50.54 address. Each would fail today against a dead name and a
dead IP, so these are corrections rather than cosmetics. homepage-regroup is
renamed to match; the other three keep their names, which never carried the
host.

playbooks/pull-hf-repo.yaml

@@ -1,4 +1,4 @@
-# Pull a model or dataset from HuggingFace into ana-ml2's shared HF cache
+# Pull a model or dataset from HuggingFace into fv-ml1's shared HF cache
 # (`/tank/aimodels/huggingface/`). Repo-type-agnostic — handles GGUFs,
 # safetensors, datasets, or anything else HF hosts.
 #
@@ -16,16 +16,16 @@
 # Usage:
 #
 #   # Full repo (e.g. safetensors for later AWQ quant + vLLM serving):
-#   scripts/elway ana-ml2 --playbook playbooks/pull-hf-repo.yaml \
+#   scripts/elway fv-ml1 --playbook playbooks/pull-hf-repo.yaml \
 #       --var hf_repo=Skywork/Skywork-Reward-V2-Llama-3.1-8B
 #
 #   # Single quant pattern (e.g. one GGUF for llama-swap):
-#   scripts/elway ana-ml2 --playbook playbooks/pull-hf-repo.yaml \
+#   scripts/elway fv-ml1 --playbook playbooks/pull-hf-repo.yaml \
 #       --var hf_repo=mradermacher/Selene-1-Mini-Llama-3.1-8B-GGUF \
 #       --var allow_patterns='*Q6_K*'
 #
 #   # Dataset (preference data, eval set, etc.):
-#   scripts/elway ana-ml2 --playbook playbooks/pull-hf-repo.yaml \
+#   scripts/elway fv-ml1 --playbook playbooks/pull-hf-repo.yaml \
 #       --var hf_repo=Skywork/Skywork-Reward-Preference-80K-v0.2 \
 #       --var repo_type=dataset
 #