feat(snipe): auction support + easter eggs (Konami, The Steal, de-emphasis)
Auction metadata:
- Listing model gains buying_format + ends_at fields
- Migration 002 adds columns to existing databases
- scraper.py: parse s-item__time-left → absolute ends_at ISO timestamp
- normaliser.py: extract buyingOptions + itemEndDate from Browse API
- store.py: save/get updated for new fields
Easter eggs (app/ui/components/easter_eggs.py):
- Konami code detector (JS → URL param → Streamlit rerun)
- Web Audio API snipe call synthesis, gated behind sidebar checkbox
(disabled by default for safety/accessibility)
- "The Steal" gold shimmer: trust ≥ 90, price 15–30% below market,
no suspicious_price flag
- Auction de-emphasis: soft caption when > 1h remaining
UI updates:
- listing_row: steal banner + auction notice per row
- Search: inject CSS, check snipe mode, "Ending soon" sort option,
pass market_price from comp cache to row renderer
- app.py: Konami detector + audio enable/disable sidebar toggle
Tests: 22 new tests (72 total, all green)
pyr0ball
6ec0f957b9