- Extract hardcoded trending snapshot source/window to named constants.
- Collapse the three identical personal-preset nil-checks into one case.
- Persist the selected preset through the shared storage util (try/catch
wrapped) instead of raw localStorage with manual SSR guards.
- Derive KNOWN_FILTERS from PRESET_OPTIONS so the lists can't drift.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
