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>

package.json

@@ -40,6 +40,7 @@
     "postgres": "^3.4.8",
     "sharp": "^0.34.5",
     "stripe": "^20.4.1",
+    "tesseract.js": "^7.0.0",
     "web-push": "^3.6.7"
   },
   "devDependencies": {
@@ -52,4 +53,4 @@
       "/.claude/"
     ]
   }
-}
+}