fix: use company name from form instead of CSV column

Fixed CSV rate upload to use the company name provided in the upload form instead of reading it from the CSV file's companyName column. This prevents "unknown" or incorrect company names from being used.

## Changes

**Domain Layer**
- Updated `CsvRateLoaderPort` interface to accept optional `companyNameOverride` parameter
- Modified `CsvRateSearchService.loadAllRates()` to pass company name from config when loading rates

**Infrastructure Layer**
- Updated `CsvRateLoaderAdapter.loadRatesFromCsv()` to accept `companyNameOverride` parameter
- Modified `mapToCsvRate()` to use override company name if provided, otherwise fallback to CSV column value
- Added logging to show which company name is being used (from override or CSV)

**Application Layer**
- Updated CSV upload controller to pass `dto.companyName` to the loader

## Impact
- When uploading a CSV file through the admin interface, the company name from the form is now correctly used
- Existing CSV files with "unknown" in the companyName column will now show the correct company name from the database configuration
- Backward compatible: if no override is provided, the CSV column value is still used

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

apps/backend/src/application/controllers/admin/csv-rates.controller.ts

@@ -171,7 +171,8 @@ export class CsvRatesAdminController {
       }
 
       // Load rates to verify parsing using the converted path
-      const rates = await this.csvLoader.loadRatesFromCsv(filePathToValidate, dto.companyEmail);
+      // Pass company name from form to override CSV column value
+      const rates = await this.csvLoader.loadRatesFromCsv(filePathToValidate, dto.companyEmail, dto.companyName);
       const ratesCount = rates.length;
 
       this.logger.log(`Successfully parsed ${ratesCount} rates from ${file.filename}`);

apps/backend/src/domain/ports/out/csv-rate-loader.port.ts

@@ -13,10 +13,11 @@ export interface CsvRateLoaderPort {
    * Load all rates from a CSV file
    * @param filePath - Absolute or relative path to CSV file
    * @param companyEmail - Email address for the company (stored in config metadata)
+   * @param companyNameOverride - Optional company name to override the one in CSV file
    * @returns Array of CSV rates
    * @throws Error if file cannot be read or parsed
    */
-  loadRatesFromCsv(filePath: string, companyEmail: string): Promise<CsvRate[]>;
+  loadRatesFromCsv(filePath: string, companyEmail: string, companyNameOverride?: string): Promise<CsvRate[]>;
 
   /**
    * Load rates for a specific company

apps/backend/src/domain/services/csv-rate-search.service.ts

@@ -135,12 +135,13 @@ export class CsvRateSearchService implements SearchCsvRatesPort {
    * Load all rates from all CSV files
    */
   private async loadAllRates(): Promise<CsvRate[]> {
-    // If config repository is available, load rates with emails from configs
+    // If config repository is available, load rates with emails and company names from configs
     if (this.configRepository) {
       const configs = await this.configRepository.findActiveConfigs();
       const ratePromises = configs.map(config => {
         const email = config.metadata?.companyEmail || 'bookings@example.com';
-        return this.csvRateLoader.loadRatesFromCsv(config.csvFilePath, email);
+        // Pass company name from config to override CSV column value
+        return this.csvRateLoader.loadRatesFromCsv(config.csvFilePath, email, config.companyName);
       });
       const rateArrays = await Promise.all(ratePromises);
       return rateArrays.flat();

apps/backend/src/infrastructure/carriers/csv-loader/csv-rate-loader.adapter.ts

@@ -79,8 +79,8 @@ export class CsvRateLoaderAdapter implements CsvRateLoaderPort {
     this.logger.log(`CSV directory initialized: ${this.csvDirectory}`);
   }
 
-  async loadRatesFromCsv(filePath: string, companyEmail: string): Promise<CsvRate[]> {
+  async loadRatesFromCsv(filePath: string, companyEmail: string, companyNameOverride?: string): Promise<CsvRate[]> {
-    this.logger.log(`Loading rates from CSV: ${filePath} (email: ${companyEmail})`);
+    this.logger.log(`Loading rates from CSV: ${filePath} (email: ${companyEmail}, company: ${companyNameOverride || 'from CSV'})`);
 
     try {
       // Read CSV file
@@ -105,7 +105,7 @@ export class CsvRateLoaderAdapter implements CsvRateLoaderPort {
       // Map to domain entities
       const rates = records.map((record, index) => {
         try {
-          return this.mapToCsvRate(record, companyEmail);
+          return this.mapToCsvRate(record, companyEmail, companyNameOverride);
         } catch (error) {
           const errorMessage = error instanceof Error ? error.message : String(error);
           this.logger.error(`Error mapping row ${index + 1} in ${filePath}: ${errorMessage}`);
@@ -255,7 +255,7 @@ export class CsvRateLoaderAdapter implements CsvRateLoaderPort {
   /**
    * Map CSV row to CsvRate domain entity
    */
-  private mapToCsvRate(record: CsvRow, companyEmail: string): CsvRate {
+  private mapToCsvRate(record: CsvRow, companyEmail: string, companyNameOverride?: string): CsvRate {
     // Parse surcharges
     const surcharges = this.parseSurcharges(record);
 
@@ -264,9 +264,12 @@ export class CsvRateLoaderAdapter implements CsvRateLoaderPort {
     const validUntil = new Date(record.validUntil);
     const validity = DateRange.create(validFrom, validUntil, true);
 
+    // Use override company name if provided, otherwise use the one from CSV
+    const companyName = companyNameOverride || record.companyName.trim();
+
     // Create CsvRate
     return new CsvRate(
-      record.companyName.trim(),
+      companyName,
       companyEmail,
       PortCode.create(record.origin),
       PortCode.create(record.destination),