Create extractor_user_template.txt

prompts/extractor_user_template.txt

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+Free-form Scenario Text:
+{SCENARIO_TEXT}
+
+Instructions:
+- Extract data strictly per the required JSON shape.
+- If an item is missing/ambiguous, set to "INSUFFICIENT_DATA" and list it under "gaps".
+- Do not add new keys.
+- Output JSON ONLY.