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/handlers/upload_handler.go

@@ -0,0 +1,96 @@
+package handlers
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+
+	"github.com/treytartt/mycrib-api/internal/services"
+)
+
+// UploadHandler handles file upload endpoints
+type UploadHandler struct {
+	storageService *services.StorageService
+}
+
+// NewUploadHandler creates a new upload handler
+func NewUploadHandler(storageService *services.StorageService) *UploadHandler {
+	return &UploadHandler{storageService: storageService}
+}
+
+// UploadImage handles POST /api/uploads/image
+// Accepts multipart/form-data with "file" field
+func (h *UploadHandler) UploadImage(c *gin.Context) {
+	file, err := c.FormFile("file")
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "No file provided"})
+		return
+	}
+
+	// Get category from query param (default: images)
+	category := c.DefaultQuery("category", "images")
+
+	result, err := h.storageService.Upload(file, category)
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, result)
+}
+
+// UploadDocument handles POST /api/uploads/document
+// Accepts multipart/form-data with "file" field
+func (h *UploadHandler) UploadDocument(c *gin.Context) {
+	file, err := c.FormFile("file")
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "No file provided"})
+		return
+	}
+
+	result, err := h.storageService.Upload(file, "documents")
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, result)
+}
+
+// UploadCompletion handles POST /api/uploads/completion
+// For task completion photos
+func (h *UploadHandler) UploadCompletion(c *gin.Context) {
+	file, err := c.FormFile("file")
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "No file provided"})
+		return
+	}
+
+	result, err := h.storageService.Upload(file, "completions")
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, result)
+}
+
+// DeleteFile handles DELETE /api/uploads
+// Expects JSON body with "url" field
+func (h *UploadHandler) DeleteFile(c *gin.Context) {
+	var req struct {
+		URL string `json:"url" binding:"required"`
+	}
+
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	if err := h.storageService.Delete(req.URL); err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"message": "File deleted successfully"})
+}