feat(scenes): add deterministic romantic cinema template

src/cognitive_agent/application/codex_assistant.py

@@ -48,7 +48,10 @@ from cognitive_agent.application.scene_composer import (
     scene_required_peripheral_refs,
     scene_semantic_guidance,
 )
-from cognitive_agent.application.scene_templates import normalize_scene_template_name
+from cognitive_agent.application.scene_templates import (
+    PRESERVE_BASE_EXTERNAL_LIGHT_TEMPLATE_IDS,
+    normalize_scene_template_name,
+)
 from cognitive_agent.application.schedule_intent import is_schedule_stop, needs_mode_schedule
 
 LOGGER = logging.getLogger(__name__)
@@ -1034,15 +1037,53 @@ class CodexAssistantService:
             if mode_parts
             else None
         )
-        scene_template_plan = (
+        candidate_scene_template_plan = (
             _catalog_exact_scene_template_plan(catalog, mode_parts[0])
-            if mode_parts and not mode_parts[1] and exact_mode_matches == 0
+            if mode_parts and not mode_parts[1]
             else None
         )
+        candidate_scene_template_metadata = (
+            candidate_scene_template_plan.get("metadata")
+            if isinstance(candidate_scene_template_plan, Mapping)
+            else None
+        )
+        candidate_scene_template_id = (
+            str(candidate_scene_template_metadata.get("template_id") or "")
+            if isinstance(candidate_scene_template_metadata, Mapping)
+            else ""
+        )
+        scene_template_plan = (
+            candidate_scene_template_plan
+            if exact_mode_matches == 0
+            or candidate_scene_template_id
+            in PRESERVE_BASE_EXTERNAL_LIGHT_TEMPLATE_IDS
+            else None
+        )
+        scene_template_metadata = (
+            scene_template_plan.get("metadata")
+            if isinstance(scene_template_plan, Mapping)
+            else None
+        )
+        preserve_base_external_lights = bool(
+            isinstance(scene_template_metadata, Mapping)
+            and str(scene_template_metadata.get("template_id") or "")
+            in PRESERVE_BASE_EXTERNAL_LIGHT_TEMPLATE_IDS
+        )
+        if preserve_base_external_lights:
+            # The template already owns every native cinema action. Do not let
+            # generic romantic-scene defaults replace or append native actions;
+            # only the deterministic, NFC-authorized light refs may be added.
+            scene_semantics = scene_context.get("scene_semantics")
+            if isinstance(scene_semantics, dict):
+                scene_semantics["required_native_domains"] = []
+                scene_semantics["required_native_controls"] = []
+                scene_semantics["native_fallback_requests"] = []
+                scene_semantics["default_control_bundle_applied"] = False
         dynamic_scene_request = bool(mode_parts and needs_mode_schedule(message))
         scene_peripheral_actions = scene_context.get("peripheral_actions", [])
         template_augmentation_preview = bool(
             scene_template_plan is not None
+            and not preserve_base_external_lights
             and not dynamic_scene_request
             and isinstance(scene_peripheral_actions, list)
             and scene_peripheral_actions