Add Circa post-parse validation

src/market-scanner.js

@@ -770,7 +770,45 @@ export function parseCircaOcrText(text) {
     entries.push(entry);
   }
 
-  return dedupeBy(entries, (entry) => `${entry.marketKey}|${entry.book}`);
+  return dedupeBy(entries.filter(isLikelyValidCircaEntry), (entry) => `${entry.marketKey}|${entry.book}`);
+}
+
+function isLikelyValidCircaEntry(entry) {
+  const playerName = normalizeWhitespace(entry.playerName);
+  if (!playerName || playerName.length < 3 || /\d/.test(playerName)) {
+    return false;
+  }
+
+  const words = playerName.split(/\s+/).filter(Boolean);
+  if (words.length < 2 || words.length > 4) {
+    return false;
+  }
+
+  if (words.some((word) => word.length < 2)) {
+    return false;
+  }
+
+  const oddsValue = Number(entry.oddsInput);
+  if (!Number.isFinite(oddsValue)) {
+    return false;
+  }
+
+  if (entry.marketType === 'home_runs') {
+    if (entry.side === 'yes' && (oddsValue < 100 || oddsValue > 2000)) {
+      return false;
+    }
+    if (entry.side === 'no' && (oddsValue > -100 || oddsValue < -5000)) {
+      return false;
+    }
+  }
+
+  if (entry.lineValue !== null && entry.lineValue !== undefined) {
+    if (entry.lineValue < 0 || entry.lineValue > 20) {
+      return false;
+    }
+  }
+
+  return true;
 }
 
 function dedupeBy(values, getKey) {

test/market-scanner.test.js

@@ -93,6 +93,17 @@ test('recovers multiple packed home run rows from one OCR line', () => {
   assert.ok(entries.some((entry) => entry.playerName === 'GUNNAR HENDERSON' && entry.oddsInput === '+525'));
 });
 
+test('filters obviously invalid circa player-name rows', () => {
+  const entries = parseCircaOcrText([
+    'WILL [PLAYER] HIT A HOME RUN?',
+    'AARON JUDGE (NYY) 83681 +235 83682 -280',
+    'AS667 NATIONALS A YANKEES 83681 +235 83682 -280',
+  ].join('\n'));
+
+  assert.ok(entries.some((entry) => entry.playerName === 'AARON JUDGE'));
+  assert.ok(!entries.some((entry) => /NATIONALS A YANKEES/.test(entry.playerName)));
+});
+
 test('ranks discrepancy, width, and circa alerts', () => {
   const entries = [
     {