fix(lint): resolve all 49 lint warnings and errors across codebase

- Remove unused imports/variables in seed scripts and test files
- Replace console.log with console.warn in seed/utility scripts
- Replace `as any` with proper Prisma types (InputJsonValue, PaymentStatus, Plan, UserWhereInput)
- Fix import-x/no-named-as-default-member warnings in logger, mapbox, eslint config
- Prefix unused callback params with underscore in e2e tests

Co-Authored-By: Paperclip <noreply@paperclip.ing>

scripts/seed-districts.ts

@@ -250,13 +250,13 @@ const PROPERTY_TEMPLATES = [
 ];
 
 async function seedDistrictProperties() {
-  console.log('Seeding district properties across HCM, Hanoi, Da Nang...\n');
+  console.warn('Seeding district properties across HCM, Hanoi, Da Nang...\n');
 
   let created = 0;
   let skipped = 0;
 
   for (const { city, districts } of getAllDistricts()) {
-    console.log(`  ${city}:`);
+    console.warn(`  ${city}:`);
     const coords = CITY_COORDINATES[city] ?? {};
 
     for (const { district, wards } of districts) {
@@ -296,24 +296,24 @@ async function seedDistrictProperties() {
     }
 
     const cityDistricts = districts.length;
-    console.log(`    ${cityDistricts} districts processed`);
+    console.warn(`    ${cityDistricts} districts processed`);
   }
 
-  console.log(`\n  Total: ${created} properties created, ${skipped} skipped (already exist)`);
+  console.warn(`\n  Total: ${created} properties created, ${skipped} skipped (already exist)`);
 }
 
 async function main() {
-  console.log('=== Seed Districts — Vietnam Real Estate Dev Data ===\n');
+  console.warn('=== Seed Districts — Vietnam Real Estate Dev Data ===\n');
 
   // Log summary
   for (const { city, districts } of getAllDistricts()) {
     const totalWards = districts.reduce((sum, d) => sum + d.wards.length, 0);
-    console.log(`  ${city}: ${districts.length} districts, ${totalWards} wards`);
+    console.warn(`  ${city}: ${districts.length} districts, ${totalWards} wards`);
   }
-  console.log('');
+  console.warn('');
 
   await seedDistrictProperties();
-  console.log('\nDone.');
+  console.warn('\nDone.');
 }
 
 // Run standalone or import as module