feat(gen-seat): promote absolute-heresy to the live gen seat

MuXodious/Qwen3.8-27B-absolute-heresy (Heretic v1.4.0 + SOMPOA, trial T377,
pin c2374593) quantized through our mixed NVFP4+FP8 recipe and promoted after
passing the full gate on the probe port.

Gate vs incumbent -- MTP acceptance 47.2% (48.2%), decode 103.5 tok/s (96.4),
prefill 6618/5403 at 6.7k/27k (6334/5085), TTFT 27k 5.00s (5.31s), perplexity
6.910 (7.059, 2.1% better), surface 6/6, abliteration compliance 4/4. On our
battery-instruct arm -- the framing that actually elicits refusals -- 0/55 with
zero EMPTY, so no catatonia at the hard edge.

Speed deltas are image-confounded: the probe ran the seat's pinned nightly
while the incumbent's stored numbers came from an earlier image. Read as not
worse. Acceptance, perplexity, surface and refusal are apples-to-apples.

All 7 LiteLLM aliases verified end-to-end. GPU0 at 91.3/97.9 GB with meromero
healthy -- more headroom than the previous build. Incumbent weights untouched
and .env.bak-heresy-20260817 in place for rollback.

Candidate is a 2-day-old RC1 with ~348 downloads; watch real multi-turn use.

persistent-memory.md

@@ -111,7 +111,9 @@ no longer deployed sidecars here. See Recent decisions.)
 
 _As of 2026-08-17 — **quiet; gen-seat degeneration saga CLOSED.** Gen seat resolved and coherent through 60k tokens. Lobe Chat stood up, LiteLLM upgraded + spend-log capped. Two peer research loops (dvalin/bil) closed. No blocking work in flight._
 
-- **🟢 GEN SEAT — RESOLVED 2026-08-17 (the whole multi-day degeneration saga).** Primary gen = the in-house **JonathanColetti/Heretic mixed NVFP4+FP8 build** (`/tank/aimodels/qwen38-27b-uncensored-nvfp4-mixed`, FP8 attention) on **vLLM nightly PINNED** `vllm/vllm-openai:nightly-311b3513…` (`v0.27.2rc1.dev150`, carries #51113 mamba fix), **MTP ON, prefix-caching ON**. Operator-confirmed **coherent through 60k tokens** real multi-turn. Root cause = TWO compounding real causes: (1) genuine vLLM `qwen3_5_mtp`×GDN partial-accept bug (#51113, architectural across vLLM/SGLang/llama.cpp, fixed by nightly), and (2) **AEON's full W4A4** being lowest-fidelity on the known activation gradient (W4A4 < W4+FP8 < W4+bf16) → ~15-20% stochastic degeneration on top of (1). **AEON PURGED** (re-pullable `sakamakismile/Qwen3.8-27B-AEON-ULTIMATE-UNCENSORED-NVFP4`). Full lesson `docs/pfi/model-quantization-playbook.md` §3.8. Primary **until the DavidAU Qwen3.8 lands.** ⚠ **pinned nightly is bleeding-edge — move to a stable release once #51113 ships in one (the standing follow-up).** 7 aliases (gen/gen-reasoning/summarizer/-large/classifier/image-judge/qwen-image-bench) all route here. Seat carries `--default-chat-template-kwargs '{"reasoning_effort":"medium"}'` (per-request overridable, affects gen-reasoning only). Commits `d28a371`,`2f2bbce`,`2185964`.
+- **🟢 GEN SEAT — SWAPPED to `absolute-heresy` 2026-08-17 (validated, promoted).** Live gen = `/tank/aimodels/qwen38-27b-heresy-nvfp4-mixed` — **MuXodious/Qwen3.8-27B-absolute-heresy** (Heretic v1.4.0 + **SOMPOA**, trial T377, pin `c2374593`) put through our own mixed NVFP4+FP8 recipe. Chosen because it beats the incumbent on **both** axes at once: author refusals 2/101 vs 12/100, first-token KL 0.0759 vs 0.1191. **Gate (probe :8017, pinned nightly, seat-matched flags): MTP 47.2% (inc. 48.2%), decode 103.5 tok/s (96.4), prefill 6618/5403 @6.7k/27k (6334/5085), PPL 6.910 (7.059 — 2.1% BETTER), surface 6/6, abliteration 4/4, and 0/55 refusals on our battery-instruct arm with ZERO EMPTY (no catatonia).** ⚠ speed deltas are **image-confounded** (probe on the pinned nightly, incumbent numbers from an earlier image) — read as "not worse", not a clean win. All 7 LiteLLM aliases verified end-to-end; GPU0 at 91.3/97.9 GB with meromero healthy (more headroom than the old build's 96.8). ⚠ **RC1, 2 days old, ~348 downloads** — watch real multi-turn use. **ROLLBACK:** `sudo cp /opt/docker/compose/gen-seat/.env.bak-heresy-20260817 /opt/docker/compose/gen-seat/.env && cd /opt/docker/compose/gen-seat && sudo docker compose up -d vllm-gen`; incumbent weights UNTOUCHED at `qwen38-27b-uncensored-nvfp4-mixed` — **do NOT delete** until this holds. Runbook `services/gen-seat-mixed-quant/RUNBOOK-heresy-swap.md`.
+
+- **🟢 PRIOR GEN SEAT — RESOLVED 2026-08-17 (the multi-day degeneration saga); now the ROLLBACK target.** Was the in-house **JonathanColetti/Heretic mixed NVFP4+FP8 build** (`/tank/aimodels/qwen38-27b-uncensored-nvfp4-mixed`, FP8 attention) on **vLLM nightly PINNED** `vllm/vllm-openai:nightly-311b3513…` (`v0.27.2rc1.dev150`, carries #51113 mamba fix), **MTP ON, prefix-caching ON**. Operator-confirmed **coherent through 60k tokens** real multi-turn. Root cause = TWO compounding real causes: (1) genuine vLLM `qwen3_5_mtp`×GDN partial-accept bug (#51113, architectural across vLLM/SGLang/llama.cpp, fixed by nightly), and (2) **AEON's full W4A4** being lowest-fidelity on the known activation gradient (W4A4 < W4+FP8 < W4+bf16) → ~15-20% stochastic degeneration on top of (1). **AEON PURGED** (re-pullable `sakamakismile/Qwen3.8-27B-AEON-ULTIMATE-UNCENSORED-NVFP4`). Full lesson `docs/pfi/model-quantization-playbook.md` §3.8. Primary **until the DavidAU Qwen3.8 lands.** ⚠ **pinned nightly is bleeding-edge — move to a stable release once #51113 ships in one (the standing follow-up).** 7 aliases (gen/gen-reasoning/summarizer/-large/classifier/image-judge/qwen-image-bench) all route here. Seat carries `--default-chat-template-kwargs '{"reasoning_effort":"medium"}'` (per-request overridable, affects gen-reasoning only). Commits `d28a371`,`2f2bbce`,`2185964`.
 
 - **🔵 RP SEAT — FABLE-FUSION serving `char-rp-reasoning` (evaluation window, unchanged this session).** `fablefusion-charrp-probe` ana-ml2 GPU1 `:8019` serving `char-rp-probe` (`kkuspa/Qwen3.6-27B-Fable-Fusion-711-…-MTP-NVFP4A16`). LiteLLM `char-rp-reasoning` + `char-rp-fable` both route to it (deliberate repoint, documented in `stacks/litellm/conf/config.yaml`). `darkscarlett-charrp-reasoning` is `compose down`, weights intact at `/tank/aimodels/darkscarlett-nvfp4-work/`. **⏳ STILL AWAITING operator's hands-on read of FF prose** (refusal question settled: FF 15.8% vs DS 92.5% cold-framing; DS v1.0 never abliterated). ⚠ FF reasons 2.1–4.6k chars → use `max_tokens` ≥3072. `ReadyArt/Dark-Scarlett-27B-v2.0` (Qwen3.8) is GATED (`403 awaiting review`) — operator ruled not-interesting, do NOT re-propose. **DS regeneration for brokkr RETIRED 2026-08-17 — unqueued, do NOT run** (`9c1405b`): brokkr withdrew on the operator's call because (a) our `ictrl-pair-unwrapped`/`-wrapped` control isolates the classifier over-fire cleanly where DS's cross-class delta only bounded it, and (b) **DS v2 releases soon**, so a k=5 v1 baseline baselines a superseded version. Spec at `services/refusal-probe/darkscarlett-regen-spec.md` stays banked as the record of the run that will not happen (axes + per-class grading asymmetry still correct, checklist struck through). No GPU1 window was ever spent. A DS-**v2** characterization would be a fresh purpose-scoped ask.
 
@@ -137,6 +139,8 @@ _As of 2026-08-17 — **quiet; gen-seat degeneration saga CLOSED.** Gen seat res
 
 ## Recent decisions
 
+- `[2026-08-17]` **Gen seat swapped to `absolute-heresy` — and the three bugs the swap exposed are worth more than the swap.** Candidate `MuXodious/Qwen3.8-27B-absolute-heresy` (Heretic v1.4.0 + SOMPOA, T377) beat the incumbent on refusals AND KL simultaneously, which is the unusual part — those normally trade off. Validated on the probe port per operator ruling, promoted, all 7 aliases green. **Durable lessons banked:** (1) **A CPU-only MTP head hash can replace the ~56 GB bf16 acceptance gate.** The `Qwen3_5ForConditionalGeneration` wrapper never loads the MTP head, so PEFT merges / Heretic runs / llm-compressor passes all leave `mtp.*` pristine — hashing it against a head we have already measured (the incumbent's, 47.7%) answers the question for free. Predicted 47.7%, measured 47.2%. Saved downing meromero. Tool: `services/gen-seat-mixed-quant/compare_mtp_head.py` (hash bf16 via **uint8 reinterpret** — numpy has no bfloat16). (2) **`post_quant.py` assumed a standalone `model-mtp.safetensors`**; a full checkpoint keeps `mtp.*` in a NUMBERED shard, so the copy silently no-op'd while the index was still rewritten to point at a file that never existed — 15 unresolvable tensors behind a correct-looking tensor count. Its own FAILED-CHECKS assertion caught it; **that is why the check exists rather than an assumption**. Fixed to extract. (3) **A probe that does not mirror the live seat manufactures failures.** `serve_probe.sh` hardcoded `:latest` (seat is a pinned nightly for #51113), had no tool-call/reasoning parsers, and its `--speculative-config` JSON died twice on quoting — **bash BRACE-EXPANDS `{"a":1,"b":2}` on the comma** unless single-quoted at the REMOTE shell. Adding the seat's flags took the surface test from 5/6 to **6/6**; the "tool calling broken" result was pure probe config. Commits `7997f11`,`254c588`,`2c36028`,`b0c2d3d`,`993421b`.
+
 - `[2026-08-17]` **Fleet IPv6 mapped + the real VPN topology verified; the driver is CGNAT at ESH, not the WireGuard mesh.** New ESH fiber (installing 2026-08-18) lands the house behind **CGNAT**, which breaks **Site Magic** (NH3↔ESH `sdwan-mesh-tunnel`) on IPv4 — so IPv6 becomes load-bearing as the escape hatch, and that is its most likely first consumer. Topology as VERIFIED (a prior turn assumed wrong and was corrected): UniFi↔UniFi = **Site Magic**; colo↔UniFi = **IPsec IKEv2** (`pfi-ana-nh3` 158M/165M pkt = the workhorse, `ana-to-eshudm`); **WireGuard is an RA convention only, host-based on `ana-wg`** UDP 31337 behind a FortiGate VIP — the FortiGate never terminates WG (FortiOS 7.2 has none; 7.4 added it) so "upgrade the edge for WireGuard" is a **non-problem, do not re-derive**. IPv6 today: **NH3 WAN live** `2600:1700:b25:c110::48`, **colo none**, **ESH none**. **AT&T delegates exactly ONE /64** (`2600:1700:b25:c11f::/64`) — proven by forcing prefix-ID auto→`0` and watching the subnet NOT move, because the `c110`/`c11f` pattern otherwise reads convincingly as a /60. A mesh needs a routable **WAN** address, **not** PD. `ana-wg`'s WG socket is **already dual-stack** (`[::]:31337`) → v6 RA needs an address + a v6 port-forward, no WG reconfig. ⚠ UDM legacy `rest/firewallrule` returns **0 rules** (zone-based firewall) — use `v2/…/firewall-policies`; inbound v6 is default-deny and held. All three endpoints will be **dynamic** → extend the existing hostname pattern (`ana-fw`/`nh3.phasefinal.com`) to **AAAA**. Enabled PD on `nh3-iot` to measure, **reverted on operator instruction** (all 5 LANs back to `none`, verified). Also fixed: **`ana-wg` WireGuard key material was world-readable** (`wg0.conf` + `keys/*_priv` + `*_psk` + client `configs/*.conf` at 644) → now 600, dirs 700, service untouched. Detail → `persistent-memory.d/2026-08-17-fleet-ipv6-mesh.md`.
 
 - `[2026-08-17]` **Gen-seat multi-day degeneration RESOLVED — two compounding real causes, not one; the meta-lesson is "a mitigation that HELPS but doesn't FIX means a second cause, not a wrong one."** vLLM `qwen3_5_mtp`×GDN bug (#51113, real, fixed by nightly) + AEON full-W4A4 being lowest-fidelity (W4A4<W4+FP8<W4+bf16) → ~15-20% stochastic degeneration. Fixed by mixed FP8-attn build on pinned nightly. AEON purged. Also banked: **stochastic (~15-20%) degeneration is invisible to a small synthetic probe — n=1 "clean" validated THREE non-fixes (MTP-off, APC-off, nightly-alone) that all failed in real use; get the operator's real transcript, do not trust your own probe.** Full → `docs/pfi/model-quantization-playbook.md` §3.8 (+ §3.7 MTP-multi-turn). Commits `d28a371`,`2f2bbce`,`2185964`.