fix: migration error handling for legacy DBs, fallback rejection query

db/database.js

@@ -2893,12 +2893,18 @@ function runMigrations() {
         const { normalizeMerchant } = require('../services/subscriptionService');
 
         // Re-normalize bill_merchant_rules stored under old normalization ("at t" → "att")
+        let billFixed = 0;
+        try {
           const rules = db.prepare('SELECT id, merchant FROM bill_merchant_rules').all();
           const updBill = db.prepare('UPDATE bill_merchant_rules SET merchant=? WHERE id=?');
-        let billFixed = 0;
           for (const r of rules) {
+            try {
               const fixed = normalizeMerchant(r.merchant);
-          if (fixed !== r.merchant) { updBill.run(fixed, r.id); billFixed++; }
+              if (fixed && fixed !== r.merchant) { updBill.run(fixed, r.id); billFixed++; }
+            } catch { /* skip invalid entries */ }
+          }
+        } catch (err) {
+          console.warn('[v0.90] bill_merchant_rules re-normalize skipped:', err.message);
         }
 
         // Re-normalize spending_category_rules

services/matchSuggestionService.js

@@ -119,9 +119,11 @@ function addDateScore(score, reasons, transaction, bill) {
 function wordBoundaryIncludes(a, b) {
   if (!a || !b) return false;
   if (a === b) return true;
+  try {
     const esc = s => s.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
     const wb  = s => new RegExp(`(^|\\s)${esc(s)}(\\s|$)`);
     return wb(b).test(a) || wb(a).test(b);
+  } catch { return false; }
 }
 
 function addNameScore(score, reasons, transaction, bill) {
@@ -224,6 +226,7 @@ function loadBills(db, userId) {
 }
 
 function loadRejections(db, userId) {
+  try {
     const rows = db.prepare(`
       SELECT transaction_id, bill_id
       FROM match_suggestion_rejections
@@ -231,6 +234,15 @@ function loadRejections(db, userId) {
         AND created_at > datetime('now', '-90 days')
     `).all(userId);
     return new Set(rows.map(row => suggestionId(row.transaction_id, row.bill_id)));
+  } catch {
+    // Fall back to all rejections if created_at column doesn't exist yet
+    try {
+      const rows = db.prepare(`
+        SELECT transaction_id, bill_id FROM match_suggestion_rejections WHERE user_id = ?
+      `).all(userId);
+      return new Set(rows.map(row => suggestionId(row.transaction_id, row.bill_id)));
+    } catch { return new Set(); }
+  }
 }
 
 function loadPriorMatchKeys(db, userId) {