Add PDF reports, file uploads, admin auth, and comprehensive tests

Features:
- PDF service for generating task reports with ReportLab-style formatting
- Storage service for file uploads (local and S3-compatible)
- Admin authentication middleware with JWT support
- Admin user model and repository

Infrastructure:
- Updated Docker configuration for admin panel builds
- Email service enhancements for task notifications
- Updated router with admin and file upload routes
- Environment configuration updates

Tests:
- Unit tests for handlers (auth, residence, task)
- Unit tests for models (user, residence, task)
- Unit tests for repositories (user, residence, task)
- Unit tests for services (residence, task)
- Integration test setup
- Test utilities for mocking database and services

Database:
- Admin user seed data
- Updated test data seeds

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

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

internal/dto/responses/document.go

@@ -20,6 +20,7 @@ type DocumentUserResponse struct {
 type DocumentResponse struct {
 	ID            uint                  `json:"id"`
 	ResidenceID   uint                  `json:"residence_id"`
+	Residence     uint                  `json:"residence"` // Alias for residence_id (KMM compatibility)
 	CreatedByID   uint                  `json:"created_by_id"`
 	CreatedBy     *DocumentUserResponse `json:"created_by,omitempty"`
 	Title         string                `json:"title"`
@@ -41,13 +42,7 @@ type DocumentResponse struct {
 	UpdatedAt     time.Time             `json:"updated_at"`
 }
 
-// DocumentListResponse represents a paginated list of documents
-type DocumentListResponse struct {
-	Count    int                `json:"count"`
-	Next     *string            `json:"next"`
-	Previous *string            `json:"previous"`
-	Results  []DocumentResponse `json:"results"`
-}
+// Note: Pagination removed - list endpoints now return arrays directly
 
 // === Factory Functions ===
 
@@ -69,6 +64,7 @@ func NewDocumentResponse(d *models.Document) DocumentResponse {
 	resp := DocumentResponse{
 		ID:            d.ID,
 		ResidenceID:   d.ResidenceID,
+		Residence:     d.ResidenceID, // Alias for KMM compatibility
 		CreatedByID:   d.CreatedByID,
 		Title:         d.Title,
 		Description:   d.Description,
@@ -96,16 +92,11 @@ func NewDocumentResponse(d *models.Document) DocumentResponse {
 	return resp
 }
 
-// NewDocumentListResponse creates a DocumentListResponse from a slice of documents
-func NewDocumentListResponse(documents []models.Document) DocumentListResponse {
+// NewDocumentListResponse creates a list of document responses
+func NewDocumentListResponse(documents []models.Document) []DocumentResponse {
 	results := make([]DocumentResponse, len(documents))
 	for i, d := range documents {
 		results[i] = NewDocumentResponse(&d)
 	}
-	return DocumentListResponse{
-		Count:    len(documents),
-		Next:     nil,
-		Previous: nil,
-		Results:  results,
-	}
+	return results
 }