space: derive NEC display from canon + add pyyaml

requirements.txt

@@ -1,4 +1,5 @@
 gradio==4.36.1
 huggingface_hub==0.24.0
 requests==2.31.0
+pyyaml==6.0.1
 numpy

shared_necessity_canon.py

@@ -3,6 +3,11 @@ Shared NECESSITY_CANON definition for Crovia Spaces.
 Used by both CEP Terminal and Omission Oracle to avoid duplication.
 """
 
+from pathlib import Path
+from typing import Any, Dict, Optional
+
+import yaml
+
 NECESSITY_CANON = {
     "NEC#1": {"name": "Missing data provenance", "severity": 75, "category": "provenance"},
     "NEC#2": {"name": "Missing license attribution", "severity": 80, "category": "license"},
@@ -10,3 +15,47 @@ NECESSITY_CANON = {
     "NEC#10": {"name": "Missing temporal validity", "severity": 40, "category": "validity"},
     "NEC#13": {"name": "Missing accountable entity", "severity": 70, "category": "identity"},
 }
+
+
+def _find_public_nec_canon_path() -> Optional[Path]:
+    candidates = []
+    for parent in list(Path(__file__).resolve().parents)[:8]:
+        candidates.append(parent / "canon" / "necessities.v1.yaml")
+        candidates.append(parent.parent / "canon" / "necessities.v1.yaml")
+    for candidate in candidates:
+        if candidate.exists():
+            return candidate
+    return None
+
+
+def _load_public_nec_canon(path: Path) -> Dict[str, Dict[str, Any]]:
+    with open(path, "r", encoding="utf-8") as f:
+        data = yaml.safe_load(f)
+    nec_list = (data or {}).get("necessities") or []
+    out: Dict[str, Dict[str, Any]] = {}
+    for nec in nec_list:
+        nec_id = (nec or {}).get("id")
+        if not nec_id:
+            continue
+        out[str(nec_id)] = nec
+    return out
+
+
+def _maybe_override_nec_display_fields_from_public_canon() -> None:
+    path = _find_public_nec_canon_path()
+    if not path:
+        return
+    try:
+        public = _load_public_nec_canon(path)
+    except Exception:
+        return
+    for nec_id, entry in NECESSITY_CANON.items():
+        pub = public.get(nec_id)
+        if not pub:
+            continue
+        pub_name = pub.get("name")
+        if pub_name:
+            entry["name"] = pub_name
+
+
+_maybe_override_nec_display_fields_from_public_canon()