feat: use router to group routes

internal/middleware/utils.go

@@ -1,24 +0,0 @@
-package middleware
-
-import (
-	"net/http"
-
-	"git.juancwu.dev/juancwu/budgit/internal/ui"
-	"git.juancwu.dev/juancwu/budgit/internal/ui/pages"
-)
-
-// Redirect handles both HTMX and regular HTTP redirects.
-// For HTMX requests, it sets the HX-Redirect header; for regular requests,
-// it uses http.Redirect.
-func redirect(w http.ResponseWriter, r *http.Request, path string, code int) {
-	if r.Header.Get("HX-Request") == "true" {
-		w.Header().Set("HX-Redirect", path)
-		w.WriteHeader(code)
-		return
-	}
-	http.Redirect(w, r, path, code)
-}
-
-func notfound(w http.ResponseWriter, r *http.Request) {
-	ui.Render(w, r, pages.NotFound())
-}