docs(vault): the NPU lane's one door into the container, and the pin that landed

frank-dragoon's lane section: the staging dir must live inside the payload dir
(the image ships no /models, so a nested :ro bind has no mountpoint to land on),
the entrypoint's rejection of HALOGEN_NPU_DIR, and the fabric-clock paragraph
corrected — the vendor's root host unit is installed and reports `held (manual)`
as of today, so "nothing is held" is retired along with the hand-write it
replaced.

dankclaw-iommu-translation-off: the deferred `pp_dpm_fclk` pin is no longer
deferred; the fact is owned by [[frank-dragoon]] and this page links it.

serverAppConfigs-docs/LLM/dankclaw-iommu-translation-off.md

@@ -215,9 +215,10 @@ is in `render`, so a quadlet needs `AddDevice=/dev/accel/accel0` +
 `GroupAdd=keep-groups`. **No NPU endpoint is deployed** —  stays the
 history of the retired endpoint; what changed is only its precondition.
 
-**Deliberately deferred:** the `pp_dpm_fclk` pin (level 7, 2000 MHz) from the issue's
-co-run step. Pinning the fabric clock changes iGPU timing for every workload, and
-nothing co-runs on the NPU yet; it goes in when an NPU endpoint actually exists.
+**The `pp_dpm_fclk` pin (level 7, 2000 MHz) went in on 2026-10-19**, with the first thing that needed it: the
+vendor's root host unit, installed and enabled by `frank-dragoon`'s deployer while its NPU lane is named. Pinning
+the fabric clock changes iGPU timing for every workload, which is exactly why it waited for a co-run to exist; the
+law, the hold and the serve-side re-check live in [[frank-dragoon]].
 PerfOpt still needs Linux 7.4 — `7.0.0-38-generic` has zero `perfopt` symbols and the
 26.04 archive caps at `7.0.0-38.38`.