feat: checkpoint device agent runtime milestones

semantic/prompts.py

@@ -0,0 +1,25 @@
+from __future__ import annotations
+
+import json
+from typing import Any
+
+from semantic.models import SEMANTIC_SCENE_SCHEMA
+
+ENRICHMENT_SYSTEM_PROMPT = f"""You enrich a mobile device Scene into a SemanticScene.
+
+Identify the current page in a short page string, list plain-language intents the
+screen appears to support, and label the purpose of relevant widgets. Use only
+element_id values that appear in the input Scene's elements[].id list; never invent
+or rewrite element IDs. Prefer concise, stable labels over visual descriptions.
+
+Return structured output matching this JSON schema exactly:
+{json.dumps(SEMANTIC_SCENE_SCHEMA, sort_keys=True)}
+"""
+
+
+def scene_user_prompt(scene_json: dict[str, Any]) -> str:
+    return (
+        "Enrich this Scene. Widget labels must reference only element IDs present "
+        "in this JSON:\n"
+        f"{json.dumps(scene_json, ensure_ascii=False, sort_keys=True)}"
+    )