Enhance tender service to exclude company-rejected tenders from recommendations

- Updated the tender service to include a new dependency for listing rejected tenders by company, allowing for more refined tender recommendations.
- Introduced a new field in the SearchForm to specify whether to exclude rejected tenders from the recommendation results.
- Enhanced the Recommend method to filter out rejected tenders based on the new exclusion logic, improving the relevance of AI-ranked tender recommendations.
- Added unit tests to verify the exclusion logic for rejected tenders, ensuring robust functionality.

This update improves the tender recommendation process by ensuring that company-rejected tenders are not included in the results, enhancing user experience and satisfaction.

internal/tender/form.go

@@ -65,6 +65,8 @@ type SearchForm struct {
 	DocumentsScraped        bool     `query:"documents_scraped" valid:"optional"`
 	// ContractFolderIDsWithDocuments is populated by the service from MinIO when DocumentsScraped is true.
 	ContractFolderIDsWithDocuments []string `query:"-" valid:"optional"`
+	// ExcludeRejectedTenders hides company-rejected tenders from recommendation results.
+	ExcludeRejectedTenders bool `query:"-" valid:"optional"`
 }
 
 // SearchResponse represents the response for listing tenders