Update alert thresholds and fallback order

src/config.js

@@ -34,11 +34,11 @@ export function getConfig() {
   const sharpEdgeAlertMinBooks = Number(process.env.SHARP_EDGE_ALERT_MIN_BOOKS || 5);
   const staleBookAlertThreshold = Number(process.env.STALE_BOOK_ALERT_THRESHOLD || 0.025);
   const reverseAlertThreshold = Number(process.env.REVERSE_ALERT_THRESHOLD || 0.03);
-  const dfsScanMinBooks = Number(process.env.DFS_SCAN_MIN_BOOKS || 2);
+  const dfsScanMinBooks = Number(process.env.DFS_SCAN_MIN_BOOKS || 3);
   const dfsEdgeAlertThreshold = Number(process.env.DFS_EDGE_ALERT_THRESHOLD || sharpEdgeAlertThreshold);
   const dfsReverseAlertThreshold = Number(process.env.DFS_REVERSE_ALERT_THRESHOLD || reverseAlertThreshold);
   const dfsStaleAlertThreshold = Number(process.env.DFS_STALE_ALERT_THRESHOLD || staleBookAlertThreshold);
-  const exchangeScanMinBooks = Number(process.env.EXCHANGE_SCAN_MIN_BOOKS || 2);
+  const exchangeScanMinBooks = Number(process.env.EXCHANGE_SCAN_MIN_BOOKS || 3);
   const exchangeEdgeAlertThreshold = Number(process.env.EXCHANGE_EDGE_ALERT_THRESHOLD || sharpEdgeAlertThreshold);
   const exchangeReverseAlertThreshold = Number(process.env.EXCHANGE_REVERSE_ALERT_THRESHOLD || reverseAlertThreshold);
   const exchangeStaleAlertThreshold = Number(process.env.EXCHANGE_STALE_ALERT_THRESHOLD || staleBookAlertThreshold);

src/embeds.js

@@ -650,7 +650,7 @@ export function buildMarketHealthEmbed(title, rows, filters = {}) {
         `Rows: ${row.rows} | Avg Books: ${row.averageBooksCompared.toFixed(2)}`,
         `Avg Width: ${formatPercent(row.averageWidthPct * 100)}`,
         row.lane === 'sportsbook'
-          ? `Sharp Source: Circa ${row.circaRows} | MGM fallback ${row.mgmFallbackRows}`
+          ? `Sharp Source: Circa ${row.circaRows} | FanDuel fallback ${row.fanduelFallbackRows ?? 0} | MGM fallback ${row.mgmFallbackRows}`
           : `Reference: ${row.lane === 'dfs' ? 'DFS consensus baseline' : 'Exchange consensus baseline'} | Rows ${row.consensusRows}`,
       ].join('\n'),
       inline: false,
@@ -1462,7 +1462,13 @@ function describeSharpSource(row) {
   if (row.lane === 'exchange') {
     return 'Exchange consensus';
   }
-  return row.sharpSourceMode === 'circa' ? 'Circa' : 'BetMGM fallback';
+  if (row.sharpSourceMode === 'circa') {
+    return 'Circa';
+  }
+  if (row.sharpSourceMode === 'fanduel_fallback') {
+    return 'FanDuel fallback';
+  }
+  return 'BetMGM fallback';
 }
 
 function getReferenceLabel(row) {

src/market-scanner.js

@@ -2215,6 +2215,7 @@ function pickLaneSharpEntry(uniqueEntries = [], lane = 'sportsbook') {
   const normalizedLane = normalizeLaneFilter(lane);
   if (normalizedLane === 'sportsbook') {
     return uniqueEntries.find((entry) => normalizeBookFilter(entry.book) === 'Circa')
+      ?? uniqueEntries.find((entry) => normalizeBookFilter(entry.book) === 'FanDuel')
       ?? uniqueEntries.find((entry) => normalizeBookFilter(entry.book) === 'BetMGM')
       ?? null;
   }
@@ -2232,7 +2233,13 @@ function getSharpSourceMode(entry, lane = 'sportsbook') {
   const normalizedLane = normalizeLaneFilter(lane);
   const normalizedBook = normalizeBookFilter(entry?.book) ?? entry?.book ?? 'Unknown';
   if (normalizedLane === 'sportsbook') {
-    return normalizedBook === 'Circa' ? 'circa' : 'mgm_fallback';
+    if (normalizedBook === 'Circa') {
+      return 'circa';
+    }
+    if (normalizedBook === 'FanDuel') {
+      return 'fanduel_fallback';
+    }
+    return 'mgm_fallback';
   }
   if (normalizedLane === 'dfs') {
     return 'dfs_consensus';
@@ -2372,6 +2379,7 @@ export function analyzeSharpMarkets(entries, config = {}, options = {}) {
           widthTotal: 0,
           booksTotal: 0,
           circaRows: 0,
+          fanduelFallbackRows: 0,
           mgmFallbackRows: 0,
           consensusRows: 0,
         });
@@ -2383,6 +2391,8 @@ export function analyzeSharpMarkets(entries, config = {}, options = {}) {
       current.booksTotal += row.booksCompared;
       if (row.sharpSourceMode === 'circa') {
         current.circaRows += 1;
+      } else if (row.sharpSourceMode === 'fanduel_fallback') {
+        current.fanduelFallbackRows += 1;
       } else if (row.sharpSourceMode === 'mgm_fallback') {
         current.mgmFallbackRows += 1;
       } else {

test/alerts.test.js

@@ -47,6 +47,22 @@ test('market health embed uses lane-appropriate reference language', () => {
   assert.doesNotMatch(embed.fields[0].value, /MGM fallback/i);
 });
 
+test('sportsbook market health embed shows fanDuel before MGM fallback', () => {
+  const embed = buildMarketHealthEmbed('Market Health', [{
+    marketLabel: 'Home Runs',
+    lane: 'sportsbook',
+    rows: 4,
+    averageBooksCompared: 4,
+    averageWidthPct: 0.05,
+    circaRows: 2,
+    fanduelFallbackRows: 1,
+    mgmFallbackRows: 1,
+  }], { lane: 'sportsbook' }).toJSON();
+
+  assert.match(embed.fields[0].value, /FanDuel fallback 1/i);
+  assert.match(embed.fields[0].value, /MGM fallback 1/i);
+});
+
 test('builds the alerts embed with all analyst lines', () => {
   const embed = buildAlertsEmbed().toJSON();
 

test/market-scanner.test.js

@@ -728,7 +728,7 @@ test('sharp edge alerts require pregame rows and at least five books compared',
   assert.equal(sentPayloads.length, 1);
 });
 
-test('sharp analysis prefers Circa and falls back to BetMGM when Circa is missing', () => {
+test('sharp analysis prefers Circa, then FanDuel, then BetMGM for sportsbook reference', () => {
   const rows = analyzeSharpMarkets([
     {
       marketKey: 'judge-hr',
@@ -809,8 +809,8 @@ test('sharp analysis prefers Circa and falls back to BetMGM when Circa is missin
   assert.equal(judge.sharpSourceMode, 'circa');
 
   const soto = rows.sharpRows.find((row) => row.playerName === 'Juan Soto');
-  assert.equal(soto.sharpBook, 'BetMGM');
-  assert.equal(soto.sharpSourceMode, 'mgm_fallback');
+  assert.equal(soto.sharpBook, 'FanDuel');
+  assert.equal(soto.sharpSourceMode, 'fanduel_fallback');
 
   assert.equal(rows.sharpRows.some((row) => row.playerName === 'Ronald Acuna Jr.'), false);
 });