feat(semif): SemIf option-logit decisions on fv-ml1 GPU 1 (Prime)

services/semif-serve is a FastAPI wrapper around SemIf's direct and shared torch
scorers (SemIf-OpenJev @ 23cf1f39, MIT). Upstream ships only a batch CLI. The
wrapper loads the pinned Qwen3.5-4B (851bf6e8, BF16) once from the offline HF
cache and returns SemIf's result dicts unchanged, with an optional per-workload
temperature-calibrated view. Contract: semif-serve.contract.md. Built with a
short contract, TDD (39 tests, fake engine and fake torch, no GPU) and a heid
bug-hunt panel (pending).

On the card:
- torch 2.10.0+cu128 with sm_120 kernels, which is SemIf's own stack;
- a hard 12 GiB VRAM cap.
Two defects surfaced only on the card, and each fix is covered by a test:
- 0.1.1: an OOM raised as a chained exception kept the failed request's tensors
  alive (11.9 GiB after the 503). It is now raised unchained, after gc.
- 0.1.2: a large request left 12.6 GB reserved on the shared card. After each
  call, reserved memory over the baseline + 512 MiB is now released.

Acceptance against SemIf's committed torch predictions (authored144):
- 142/144 same top choice; both misses are exact bf16 ties;
- 144/144 identical prompt hashes;
- deterministic A-vs-A;
- negative control 14/144;
- shared vs direct 72/72.
21 binary criteria over one state take 159 ms. The shared-mode capacity table
under the cap is in stacks/semif/README.md.

The Dockerfile installs dependencies from a manifest with the project version
blanked, so a version bump reuses the ~4 GB torch layer. Verified: 41 s rebuild,
dependency layer CACHED.

DNS: semif.fv.internal. Token: vault semif/api-token.

persistent-memory.md

@@ -142,6 +142,18 @@ _As of 2026-09-26 ~1620 PT._
   commissioning misbehaves, the UniFi mDNS reflector on esh-iot is the first knob
   (a Prime/infra-ops change). → `servers/esh-matter/README.md`
 
+### SemIf on fv-ml1 GPU 1 (2026-09-27, Prime)
+
+- **LIVE: `semif-serve` 0.1.2** at `http://10.251.50.54:8032` (`semif.fv.internal`). It wraps the SemIf
+  option-logit scorers (pinned `23cf1f39`, Qwen3.5-4B `851bf6e8`, BF16); token `semif/api-token`.
+  Code + contract: `services/semif-serve/`; stack `stacks/semif`. **No consumer yet.**
+- Acceptance: 142/144 top choice vs upstream (both misses are exact bf16 ties), 144/144 prompt hashes,
+  deterministic, negative control 14/144. It holds 12 GiB hard with release after a burst (~8.7 GB resting).
+- **Pending:** the heid bug-hunt panel (thread `01M3H3F4RR7XBP90KQ3A39H4SX`); triage and fold.
+- NVFP4 is not worth it: the SemIf scorer runs on transformers, not vLLM; quant noise lands on the scores
+  and would need its own calibration; BF16 already fits. SemIf's own MLX 4-bit run moved authored144
+  0.813 → 0.789 (one run each, so indicative only).
+
 ### restic: credential leak fixed (2026-09-27, Prime)
 
 - Seven hosts were moved from `env-file` to `repository-file` (`playbooks/restic-repository-file.yaml`),
@@ -199,6 +211,7 @@ _As of 2026-09-26 ~1620 PT._
 - `[2026-09-25]` **pfi-gx10 AC-restore VALIDATED by Prime's AC pull; Homepage stays on esh-docker-vm (Prime) after the mmap_lock wedge reboot.** `servers/pfi-gx10/README.md`, `servers/esh-docker-vm/README.md`.
 - `[2026-09-26]` **VibeVoice ASR → Q8_0 (Prime).** WER on the 4 bundled LibriSpeech clips 3/69 → 2/69 (only the I'm/I am artifact left), ×3 identical; RTF 0.09–0.17; +1.1 GB VRAM (nh3-ml1 ~11.3/16 GB). Q4_K file removed.
 - `[2026-09-26]` **esh-matter LIVE: a Matter server (matter.js 1.4.0) on CT 111 @ 10.0.90.20, VLAN 90 only** — , for ha-dev (operator-approved, relayed). → `persistent-memory.d/2026-09-26-esh-matter-live-a-matter-server-matter-js-1-4-0-on-ct-111.md`
+- `[2026-09-27]` Created empty private repo `corviduo/svoperatingsystem` (SVOS, the operating system) as claude-bot, at brokkr-smithy-dev's relay of Prime's ruling. `svos-dev` → the OS session; The High Seat's session is `highseat-dev` again.
 - `[2026-09-26]` **Embed/rerank LOAD-SHARED across esh-ml1 + nh3-ml1 (Prime).** — Second deployments were added for qwen3-embedding and reranker (config) and for reranker-a3-bge-v2-m3 (DB… → `persistent-memory.d/2026-09-26-embed-rerank-load-shared-across-esh-ml1-nh3-ml1-prime.md`
 - `[2026-09-26]` **Two dataset-foundry utility seats LIVE on nh3-ml1 (brokkr; operator approval relayed):** — LFM2.5-VL-3B on llama.cpp `:8030` (gateway `lfm25-vl-3b`, LiteLLM restarted 36 s at 0039) and… → `persistent-memory.d/2026-09-26-two-dataset-foundry-utility-seats-live-on-nh3-ml1-brokkr.md`
 - `[2026-09-26]` **Coder seat STAYS on fv-ml1 (Prime).** — The nh3-ml1 copy gave the same quality (teacher-forced true-code logprob diff +0.008 ± 0.019) but ran ~5×… → `persistent-memory.d/2026-09-26-coder-seat-stays-on-fv-ml1-prime.md`