fix: json store marshaling, api handler

- code clean up
- uncomment and simplify api auth handler
- fix redirect url for frontend
- proper redirect

internal/jsonstore/jsonstore_test.go

@@ -6,7 +6,7 @@ import (
 )
 
 func TestNewJSON(t *testing.T) {
-	store := NewStore[string]("test")
+	store := Store[string]("test")
 	store.Store("a", "1")
 	if v, _ := store.Load("a"); v != "1" {
 		t.Fatal("expected 1, got", v)
@@ -16,16 +16,16 @@ func TestNewJSON(t *testing.T) {
 func TestSaveLoad(t *testing.T) {
 	tmpDir := t.TempDir()
 	storesPath = filepath.Join(tmpDir, "data.json")
-	store := NewStore[string]("test")
+	store := Store[string]("test")
 	store.Store("a", "1")
 	if err := save(); err != nil {
 		t.Fatal(err)
 	}
-	stores = nil
+	stores.m = nil
 	if err := load(); err != nil {
 		t.Fatal(err)
 	}
-	store = NewStore[string]("test")
+	store = Store[string]("test")
 	if v, _ := store.Load("a"); v != "1" {
 		t.Fatal("expected 1, got", v)
 	}