feat(heretic2-nvfp4): stage soong-lab v0.3.13 live 9-tool schema for the NVFP4 calib tool-call-XML slice

Extracted from the deployed backend (bifrost/tools.py) via the venv with a
capturing mock register_tool — the LIVE schema, not a stale copy. OpenAI-function
form for brokkr/Dvalin's ~128-row tool-call-XML calib slice (R36 #355 anchor).

services/heretic2-nvfp4-quant/extract_soong_tools.py

@@ -0,0 +1,44 @@
+#!/usr/bin/env python3
+"""Extract soong-lab's live 9 design-tool schemas as OpenAI-function form.
+
+Run inside the deployed soong-lab venv (backend/.venv) with cwd=backend so
+`soong_lab` imports. Monkeypatches register_tool to capture each tool's
+name/input_schema/description at registration (handlers are never invoked, so
+dummy store/portrait_service are fine). Emits a `tools` array in the shape the
+NVFP4 calib tool-call-XML slice needs (brokkr R36 spec, 2026-07-14).
+"""
+import json
+import soong_lab.bifrost.tools as T
+
+captured = []
+
+
+def _fake_register_tool(registry, name, input_schema, handler=None, description=None, **kw):
+    captured.append({
+        "type": "function",
+        "function": {
+            "name": name,
+            "description": description or "",
+            "parameters": input_schema,
+        },
+    })
+
+
+T.register_tool = _fake_register_tool
+
+
+class _Dummy:
+    def __getattr__(self, k):
+        return _Dummy()
+
+    def __call__(self, *a, **k):
+        return _Dummy()
+
+
+T.register_design_tools(_Dummy(), _Dummy(), _Dummy())
+
+out = "/tmp/soong_tools_v0313.json"
+with open(out, "w") as f:
+    json.dump(captured, f, indent=2)
+print(f"captured {len(captured)} tools -> {out}")
+print("names:", [c["function"]["name"] for c in captured])