Say that the card takes one supervisor (V-486)

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013ptwopxyo3Z2kwFckHkLvN

docs/offload.md

@@ -105,6 +105,17 @@ how we find out whether the blind spot is real.
 untouched. The model, the context size, the layer count and the MTP flags are the
 owner's business and not this daemon's schema.
 
+**Every GPU service on that box belongs under this supervisor**, added to
+`cmd/mavgpud` rather than to systemd beside it. The rule was learned on
+2026-08-09. The CW2 transcriber ran as its own user unit and registered on the
+KFD like any ROCm job. So the supervisor read its own transcriber as a
+contender. It yielded the card every few seconds and the gemma-4-12b arm was
+down for eight minutes before anyone looked. So the supervisor takes a `stt`
+block and starts CW2 itself. Yielding is all or nothing, because a job that
+wants the card wants all of it. Idle unloading is not. It applies to
+llama-server, which holds 8GB. CW2 holds 1.6GB, and unloading it would cost the
+next voice turn its quality for nothing.
+
 ## What stays on homesrv, permanently
 
 The **embedder** (multilingual-e5-small, ONNX, CPU). It backs the classifier, which
@@ -156,13 +167,17 @@ builds it, beside `modelSeam` and at the same place in `wireVoice`, so the voice
 path and the meeting recorder still share one transcriber.
 
 The remote is not a second endpoint on mavgpud. whisper.cpp cannot load
-CrisperWhisper 2.0 at all. It derives its language count from the vocabulary
+CrisperWhisper 2.0 at all. It reads its language count off the vocabulary
 size, and CW2's 51897 tokens shift seven special token ids. So CW2 runs under
 transformers as its own service on port 8081, and `stt.HTTPTranscriber` is the
 second transport for the same seam. It posts raw PCM with the format in headers.
 It carries a bearer token, because audio is the most sensitive thing that
 crosses here.
 
+It is a second endpoint on nothing, but it is a second **child** of mavgpud, and
+that part is not optional. See the supervisor section above for why: a ROCm
+service the supervisor does not own is a contender it yields to.
+
 The margin is the reason: CW2 turbo scores 10.4% WER in Russian against 27.5% for
 the `ggml-small.bin` mavsttd loads, over 200 Golos clips
 (`docs/evals/2026-08-09-crisperwhisper2-russian-wer.md`). Text-to-speech has not