refactor(router): update router comments and variable names

- Update comment: 'ebook handler' -> 'scanner handler'
- Rename ebookHandler variable to scannerHandler in router.go
- Update registerProgressRoutes parameter name
- Update registerScannerRoutes calls to use new variable name

internal/router/progress.go

@@ -4,7 +4,7 @@ import (
 	"bookhoard/internal/handlers"
 )
 
-func registerProgressRoutes(cfg *Config, ebookHandler *handlers.Handler) {
+func registerProgressRoutes(cfg *Config, scannerHandler *handlers.Handler) {
 	e := cfg.Echo
 
 	// JWT middleware for protected routes
@@ -12,7 +12,7 @@ func registerProgressRoutes(cfg *Config, ebookHandler *handlers.Handler) {
 	protected := e.Group("/api", jwtMiddleware)
 
 	// Universal Progress routes (Phase 1)
-	protected.GET("/progress/:id", ebookHandler.GetUniversalProgress)
-	protected.POST("/progress/:id", ebookHandler.UpdateUniversalProgress)
-	protected.GET("/progress/:id/history", ebookHandler.GetProgressHistory)
+	protected.GET("/progress/:id", scannerHandler.GetUniversalProgress)
+	protected.POST("/progress/:id", scannerHandler.UpdateUniversalProgress)
+	protected.GET("/progress/:id/history", scannerHandler.GetProgressHistory)
 }

internal/router/router.go

@@ -132,15 +132,15 @@ func RegisterRoutes(cfg *Config) *handlers.Handler {
 	registerFrontendRoutes(cfg)
 	registerDocumentationRoutes(cfg)
 
-	// Create ebook handler for scanner routes and progress routes
-	ebookHandler := handlers.SetupRoutes(protected, cfg.Queries, cfg.ConnManager)
+	// Create scanner handler for scanner routes and progress routes
+	scannerHandler := handlers.SetupRoutes(protected, cfg.Queries, cfg.ConnManager)
 
 	// Register progress routes with actual handler
-	registerProgressRoutes(cfg, ebookHandler)
+	registerProgressRoutes(cfg, scannerHandler)
 
 	// Register scanner routes (admin only)
 	admin := protected.Group("", handlers.AdminMiddleware)
-	registerScannerRoutes(admin, ebookHandler)
+	registerScannerRoutes(admin, scannerHandler)
 
-	return ebookHandler
+	return scannerHandler
 }