- Distinguish summary (passive context) from search (active lookup)
- Reframe save as a pre-response habit loop, not a conditional check
- Add "user corrected an assumption" as explicit save trigger
- Add key naming guidance (short snake_case)
- Remove vague "when context genuinely calls for it" language

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>