fix: Stellio/Orion - use NGSI-LD core context only (remove raw.githubusercontent.com)

- STELLIO_INLINE_CONTEXT: replaced long inline dict with uri.etsi.org core URL
- ORION_CONTEXT: removed raw.githubusercontent.com URLs (not accessible from containers)
- publish_stellio(): added NGSILD-Tenant header (urn:ngsi-ld:tenant:default)
- publish_stellio(): keep @context in payload (Stellio needs it to resolve vocabulary)
- Added STELLIO_URL and STELLIO_TENANT env vars for host-based execution via Traefik

Fixes: Stellio 503 JsonLdError, Orion-LD context resolution failures.
Tested: Stellio 201, Orion-LD 207.

simulator.py

@@ -131,14 +131,10 @@ for stype, locs in SENSOR_LOCATIONS.items():
 # =============================================================================
 # Contextes NGSI-LD : core + Smart Data Models
 # https://smartdatamodels.org pour les @context officiels
-STELLIO_CONTEXT_URL = "https://gitea.digitribe.fr/eric/smart-city-digital-twin-martinique/raw/branch/master/contexts"
+# Contexte NGSI-LD pur pour Orion-LD (vocabulaires standards uniquement)
+# Orion-LD ne peut pas résoudre raw.githubusercontent.com — utiliser uri.etsi.org uniquement
 ORION_CONTEXT = [
-    f"{STELLIO_CONTEXT_URL}/ngsi-ld-core.jsonld",
-    "https://raw.githubusercontent.com/smart-data-models/dataModel.Environment/master/context.jsonld",
-    "https://raw.githubusercontent.com/smart-data-models/dataModel.Transportation/master/context.jsonld",
-    "https://raw.githubusercontent.com/smart-data-models/dataModel.Parking/master/context.jsonld",
-    "https://raw.githubusercontent.com/smart-data-models/dataModel.Weather/master/context.jsonld",
-    "https://raw.githubusercontent.com/smart-data-models/dataModel.Device/master/context.jsonld",
+    "https://uri.etsi.org/ngsi-ld/v1/ngsi-ld-core-context.jsonld",
 ]
 
 # Mapping sensor type → Smart Data Model type NGSI-LD
@@ -155,7 +151,16 @@ FROST_HEADERS = {"Accept": "application/json", "Content-Type": "application/json
 # Cache FROST : éviter de recréer Thing/Datastream
 _frost_cache: dict[str, tuple[str, str]] = {}  # (sid, field) -> (thing_id, ds_id)
 
-def _ngsi_payload(sid: str, sensor: dict) -> dict:
+# Contexte NGSI-LD pur pour Stellio et Orion-LD (vocabulaires standards uniquement)
+# Stellio et Orion-LD embarquent le contexte core NGSI-LD : https://uri.etsi.org/ngsi-ld/
+# On n'utilise PAS les vocabulaires smartdatamodels.org distants (inaccessibles depuis les containers)
+# Les types d'entité Smart Data Models (AirQualityObserved, etc.) sont reconnus par leur nom
+# Les propriétés spécifiques sont stockées telles quelles (vocabulaire libre)
+STELLIO_INLINE_CONTEXT = [
+    "https://uri.etsi.org/ngsi-ld/v1/ngsi-ld-core-context.jsonld",
+]
+
+def _ngsi_payload(sid: str, sensor: dict, context: list | dict = ORION_CONTEXT) -> dict:
     """Construit un payload NGSI-LD avec Smart Data Models officiels."""
     stype = sensor["type"]
     model_type = SMART_MODEL_MAPPING.get(stype, "Device")
@@ -163,7 +168,7 @@ def _ngsi_payload(sid: str, sensor: dict) -> dict:
     
     # Attributs communs à tous les modèles
     payload = {
-        "@context": ORION_CONTEXT,
+        "@context": context,
         "id":          f"urn:ngsi-ld:{model_type}:{sid}",
         "type":        model_type,
         "dateObserved": {"type": "Property", "value": now},
@@ -413,19 +418,24 @@ try:
 except:
     pass
 ORION_URL = f"http://{ORION_IP or ORION_HOST}:1026" if ORION_IP else "http://fiware-gis-quickstart-orion-1:1026"
-STELLIO_URL = "http://stellio-api-gateway:8080"
+STELLIO_URL = os.environ.get("STELLIO_URL", "http://stellio-api-gateway:8080")
 # Configuration OpenRemote (URLs dynamiques)
 OR_URL      = os.environ.get("OR_URL", "http://openremote-manager-1:8080")  # Hostname Docker interne
 OR_REALM    = os.environ.get("OR_REALM", "smartcity")  # Default: smartcity
 OR_TOKEN_URL = os.environ.get("OR_TOKEN_URL", f"http://openremote-keycloak-1:8080/auth/realms/{OR_TOKEN_REALM}/protocol/openid-connect/token")
 OR_TOKEN_TTL = int(os.environ.get("OR_TOKEN_TTL", "3600"))  # Refresh token every hour
+STELLIO_TENANT = os.environ.get("STELLIO_TENANT", "urn:ngsi-ld:tenant:default")
+
 def publish_stellio(sid: str, sensor: dict) -> bool:
-    """Publie sur Stellio (gère le 409)."""
-    entity = _ngsi_payload(sid, sensor)
-    url = f"{STELLIO_URL}/ngsi-ld/v1/entities"  # Sans options=upsert
+    """Publie sur Stellio via Traefik (gère le 409)."""
+    entity = _ngsi_payload(sid, sensor, context=STELLIO_INLINE_CONTEXT)
+    # Stellio a besoin du @context pour résoudre les vocabulaires NGSI-LD
+    # (uri.etsi.org résolu depuis le JAR embarqué)
+    url = f"{STELLIO_URL}/ngsi-ld/v1/entities"
     headers = {
         "Content-Type":   "application/ld+json",
         "Accept":         "application/ld+json",
+        "NGSILD-Tenant":  STELLIO_TENANT,
     }
     try:
         body = json.dumps(entity).encode()