fix(intern-decision): roll the decision seat back to Intern-Decision-4B; h2o staged with inline-images-only

albok-dev withdrew the judge sign-off on fleet-scale evidence and brokkr
concurred: over 10,841 texts judged by both models, h2o flagged 242 adult at
0.5 against INC's 88, and no threshold reproduces INC's set. rollback-to-inc.sh
ran 14:03:28, INC healthy 14:03:56, /decide/shared smoke 200 x3.

compose.yaml is INC again; the h2o compose is kept as compose.h2o.yaml with
switch-to-h2o.sh (GPU 1 free-memory gate, falls back to INC). It now carries
Prime's inline-images-only setting: LIGHTNING_IMAGE_URLS=off on the front
(verified live: an https image URL is refused before any fetch, inline images
still answer) and vLLM --allowed-media-domains media.invalid as a backstop.
rollback-to-inc.sh no longer leaves timestamped compose copies behind.

stacks/h2o-eval/compose.yaml

@@ -21,7 +21,8 @@ services:
     command: ["--model", "/model", "--served-model-name", "h2oai/h2o-lightning-4b",
               "--max-model-len", "40960", "--max-num-seqs", "16", "--gpu-memory-utilization", "0.1506",
               "--limit-mm-per-prompt", "{\"image\": 4, \"video\": 0}",
-              "--mm-processor-kwargs", "{\"max_pixels\": 1605632}"]
+              "--mm-processor-kwargs", "{\"max_pixels\": 1605632}",
+              "--allowed-media-domains", "media.invalid"]
     deploy:
       resources:
         reservations:
@@ -40,6 +41,7 @@ services:
       SHIM_VLLM: http://127.0.0.1:18199
       SHIM_PORT: "18191"
       SHIM_NOUL_FLOOR: "0.801"
+      LIGHTNING_IMAGE_URLS: "off"   # Prime 2026-10-12: inline images only, the seat never fetches an image URL
       FRONT_SHIM: http://127.0.0.1:18191
       FRONT_VLLM: http://127.0.0.1:18199
       FRONT_BIND: 0.0.0.0