implemented mongo gridFS for file upload

internal/company/form.go

@@ -24,6 +24,8 @@ type (
 		// Contact information
 		Phone *string `json:"phone,omitempty" valid:"optional,length(10|20)" example:"+1234567890"`
 		Email *string `json:"email,omitempty" valid:"optional,email" example:"info@opplens.com"`
+		// GridFS document references (uploaded via /api/v1/files/upload or /admin/v1/files/upload)
+		DocumentFileIDs []string `json:"document_file_ids,omitempty" valid:"optional"`
 
 		// Tags for categorization and search
 		Tags *CompanyTagsForm `json:"tags,omitempty"`
@@ -122,6 +124,7 @@ type (
 		Address            *Address             `json:"address,omitempty"`
 		Phone              *string              `json:"phone,omitempty"`
 		Email              *string              `json:"email,omitempty"`
+		DocumentFileIDs    []string             `json:"document_file_ids,omitempty"`
 		Tags               *CompanyTagsResponse `json:"tags,omitempty"`
 		IsVerified         bool                 `json:"is_verified"`
 		IsCompliant        bool                 `json:"is_compliant"`
@@ -160,6 +163,7 @@ func (c *Company) ToResponse(categories []*CategoryResponse) *CompanyResponse {
 		Address:            c.Address,
 		Phone:              c.Phone,
 		Email:              c.Email,
+		DocumentFileIDs:    c.DocumentFileIDs,
 		Tags:               c.Tags.ToResponse(categories),
 		IsVerified:         c.IsVerified,
 		IsCompliant:        c.IsCompliant,
@@ -189,6 +193,7 @@ type CompanyProfileResponse struct {
 	RegistrationNumber string `json:"registration_number"`
 	Industry           string `json:"industry"`
 	FoundedYear        *int   `json:"founded_year,omitempty"`
+	DocumentFileIDs    []string `json:"document_file_ids,omitempty"`
 	CreatedAt          int64  `json:"created_at"`
 }
 
@@ -200,6 +205,7 @@ func (c *Company) ToProfileResponse() *CompanyProfileResponse {
 		RegistrationNumber: c.RegistrationNumber,
 		Industry:           c.Industry,
 		FoundedYear:        c.FoundedYear,
+		DocumentFileIDs:    c.DocumentFileIDs,
 		CreatedAt:          c.CreatedAt,
 	}
 }