Add 19 new Bambu Lab colors and fix sale banner display

Added 16 new PLA Matte refill-only colors and 3 PLA Wood spool-only colors.
Updated admin panel to automatically handle Matte prefix and Wood finish.
Fixed sale banner not displaying due to expired sale dates.
Updated all active sales to expire in 7 days (November 7, 2025).

scripts/verify-color-consistency.js

@@ -0,0 +1,77 @@
+// Verification script to check consistency between frontend colors and migration
+const fs = require('fs');
+const path = require('path');
+
+console.log('Verifying color consistency between frontend and backend...\n');
+
+// Read frontend color definitions
+const frontendFile = fs.readFileSync(
+  path.join(__dirname, '../src/data/bambuLabColors.ts'),
+  'utf8'
+);
+
+// Read migration file
+const migrationFile = fs.readFileSync(
+  path.join(__dirname, '../database/migrations/019_add_new_bambu_colors_2025.sql'),
+  'utf8'
+);
+
+// Extract colors from frontend (looking for pattern: 'ColorName': { hex: '#HEXCODE' })
+const frontendColorRegex = /'([^']+)':\s*\{\s*hex:\s*'(#[A-F0-9]{6})'/gi;
+const frontendColors = {};
+let match;
+while ((match = frontendColorRegex.exec(frontendFile)) !== null) {
+  frontendColors[match[1]] = match[2];
+}
+
+// Extract new Matte colors from migration
+const migrationColorRegex = /\('([^']+)',\s*'(#[A-F0-9]{6})'\)/gi;
+const migrationColors = {};
+while ((match = migrationColorRegex.exec(migrationFile)) !== null) {
+  migrationColors[match[1]] = match[2];
+}
+
+console.log('New colors added in migration 019:');
+console.log('='.repeat(60));
+
+let hasErrors = false;
+
+// Check each migration color exists in frontend with same hex code
+Object.keys(migrationColors).forEach(colorName => {
+  const migrationHex = migrationColors[colorName];
+  const frontendHex = frontendColors[colorName];
+
+  if (!frontendHex) {
+    console.log(`❌ ERROR: '${colorName}' missing in frontend`);
+    hasErrors = true;
+  } else if (frontendHex !== migrationHex) {
+    console.log(`❌ ERROR: '${colorName}' hex mismatch:`);
+    console.log(`   Frontend: ${frontendHex}`);
+    console.log(`   Migration: ${migrationHex}`);
+    hasErrors = true;
+  } else {
+    console.log(`✓ ${colorName}: ${frontendHex}`);
+  }
+});
+
+// Check if PLA Wood colors exist in frontend
+console.log('\nPLA Wood colors (should already exist in frontend):');
+console.log('='.repeat(60));
+const woodColors = ['Ochre Yellow', 'White Oak', 'Clay Brown'];
+woodColors.forEach(colorName => {
+  if (frontendColors[colorName]) {
+    console.log(`✓ ${colorName}: ${frontendColors[colorName]}`);
+  } else {
+    console.log(`❌ ERROR: '${colorName}' missing in frontend`);
+    hasErrors = true;
+  }
+});
+
+console.log('\n' + '='.repeat(60));
+if (hasErrors) {
+  console.log('❌ VERIFICATION FAILED: Inconsistencies detected');
+  process.exit(1);
+} else {
+  console.log('✓ VERIFICATION PASSED: All colors are consistent');
+  process.exit(0);
+}