Each service prompt card now shows:
- A collapsible how-to panel with placeholder docs, required JSON
response keys, and usage notes
- A "Reset to Default" button (with confirmation step) that restores
the built-in prompt without saving, letting the admin review first
- A "Using the built-in default prompt" indicator when unchanged
Backend includes default_system / default_user_template in the
system-prompts API response so the frontend never duplicates defaults.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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