S9 (a1): slip reader — zero-API OCR

tesseract.js (self-hosted WASM, Apache-2.0) + pure per-book layout
parsers (DK/FD/MGM/Caesars) with per-field confidence and needs_review
honesty — the reader never guesses. POST /api/slips/parse (auth, free
1/day paid 10/day, 4MB cap) + Next proxy. Gated /slip page: upload or
paste, manual-correct UI, per-leg grades through the normal engine
(refusals render honestly), add-all to Parlay Lab, share card. Vision
model upgrade logged post-revenue. 2574 -> 2608 tests.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

tests/fixtures/slips/betmgm.txt

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+BetMGM
+PARLAY
+Aaron Judge Over 1.5 Total Bases @ -115
+NY Yankees at BOS Red Sox
+Shohei Ohtani Under 7.5 Strikeouts @ +105
+LA Dodgers at SD Padres
+Mookie Betts Over 1.5 Hits +140
+LA Dodgers at SD Padres
+Stake: $10.00
+Potential returns: $68.20

tests/fixtures/slips/caesars.txt

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+Caesars Sportsbook
+Bet ID 8823941
+Aaron Judge Total Bases Over 1.5 (-115)
+NY Yankees vs BOS Red Sox
+Pete Alonso Home Runs Over 0.5 (+340)
+NY Mets vs ATL Braves
+Freddie Freeman Hits Under 1.5 (-105)
+LA Dodgers vs SD Padres
+Wager $10.00
+To Win $61.50

tests/fixtures/slips/draftkings.txt

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+DraftKings Sportsbook
+3 Leg Parlay
++575
+Aaron Judge Over 1.5
+Total Bases
+-115
+NY Yankees @ BOS Red Sox
+Today 7:05PM
+Shohei Ohtani Over 7.5
+Strikeouts Thrown
+-130
+LA Dodgers @ SD Padres
+Today 9:40PM
+Juan Soto Over 0.5
+Home Runs
++320
+NY Mets @ ATL Braves
+Today 7:20PM
+Wager: $10.00
+To Win: $57.50

tests/fixtures/slips/fanduel.txt

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+FanDuel Sportsbook
+SAME GAME PARLAY
++650
+Aaron Judge To Record 2+ Total Bases
+Giancarlo Stanton Any Time Home Run
+Gerrit Cole Over 6.5 Strikeouts
+NY Yankees @ BOS Red Sox
+7:05 PM ET
+$10 bet to win $65.00
+Total payout $75.00