fix(audit): reject retired aliases; sweep gpu-light/gemma-4-12b to gpu-vision

audit-hermes-config.py Rule 8 required auxiliary.vision.model and
auxiliary.web_extract.model to equal the retired 'gpu-light', so a config
adopting the live canonical 'gpu-vision' FAILED our own audit - the audit was
enforcing a dead alias (400 Invalid model name). Rule 8 now requires
gpu-vision; retired names gpu-light/crew-auto join the raw-name rejection set;
the guidance message names the live aliases.

Sweep of the remaining references: gpu-self-heal stops canonicalizing
gpu-light; hermes-config-template, hermes-agent-baseline, hermes-key-enforcement,
inference-optimization, litellm-client-timeouts and gpu-fleet now use the live
gpu-vision alias. Where a file restated model/rpm/weight/fallback state it now
points at CT 116 /opt/inference-harness/litellm_config.yaml instead of
duplicating it. koby's .129 config is report-only and recorded, not edited.

Adds tests/test_audit_hermes_config_alias.py: executes the audit CLI and asserts
gpu-vision passes while gpu-light and gemma-4-12b fail.

tests/test_audit_hermes_config_alias.py

@@ -0,0 +1,89 @@
+"""Regression tests for the 2026-09-12 retired-alias sweep in audit-hermes-config.py.
+
+WHY THIS FILE EXISTS: the executable audit pushed agent configs toward a DEAD alias.
+Rule 8 required `auxiliary.vision.model == "gpu-light"` and
+`auxiliary.web_extract.model == "gpu-light"`, but `gpu-light` (and its raw predecessor
+`gemma-4-12b`) were retired on 2026-09-12 and now return 400 `Invalid model name`; the
+live RTX 5070 alias is `gpu-vision`. A config that adopted the correct canonical alias
+therefore FAILED our own audit, so the audit was actively enforcing a broken config.
+
+These tests execute the real CLI (`python3 audit-hermes-config.py <config>`) and assert
+observable behaviour — exit code and the emitted rule message — for the live alias and
+for both retired names. No network, vault, or SSH access is required.
+"""
+from __future__ import annotations
+
+import pathlib
+import subprocess
+import sys
+
+ROOT = pathlib.Path(__file__).resolve().parent.parent
+AUDIT = ROOT / "audit-hermes-config.py"
+
+BASE = """
+model:
+  api_key: ""
+  api_key_env: LITELLM_API_KEY
+  base_url: http://192.168.68.116/v1
+  max_tokens: 4096
+  default: syslog-auto
+  provider: harness
+fallback_providers:
+  provider: deepseek
+  model: deepseek-v4-flash
+  api_key_env: DEEPSEEK_API_KEY
+compression:
+  model: syslog-auto
+  provider: harness
+  threshold: 0.65
+  max_context_window: 131072
+auxiliary:
+  vision:
+    model: {alias}
+    provider: harness
+  web_extract:
+    model: {alias}
+    provider: harness
+  compression:
+    model: syslog-auto
+    provider: harness
+delegation:
+  provider: harness
+custom_providers:
+  - name: harness
+    key_env: LITELLM_API_KEY
+    base_url: http://192.168.68.116/v1
+"""
+
+
+def _run(tmp_path, alias):
+    cfg = tmp_path / f"{alias}.yaml"
+    cfg.write_text(BASE.format(alias=alias))
+    proc = subprocess.run(
+        [sys.executable, str(AUDIT), str(cfg)],
+        capture_output=True, text=True,
+    )
+    return proc.returncode, proc.stdout
+
+
+def test_live_canonical_alias_passes(tmp_path):
+    """The RTX 5070 alias that actually resolves must satisfy Rule 8."""
+    code, out = _run(tmp_path, "gpu-vision")
+    assert code == 0, out
+    assert "RESULT: PASS" in out
+
+
+def test_retired_gpu_light_is_rejected(tmp_path):
+    """A config pinned to the retired alias must fail, not pass."""
+    code, out = _run(tmp_path, "gpu-light")
+    assert code == 1, out
+    assert "auxiliary.vision.model must be gpu-vision" in out
+    assert "RESULT: FAIL" in out
+
+
+def test_retired_gemma_is_rejected(tmp_path):
+    """The retired raw model name must fail Rule 8 as well."""
+    code, out = _run(tmp_path, "gemma-4-12b")
+    assert code == 1, out
+    assert "auxiliary.vision.model must be gpu-vision" in out
+    assert "RESULT: FAIL" in out