refactor(config): reduce references to config.GetInstance()

internal/homepage/types/config.go

@@ -0,0 +1,16 @@
+package homepage
+
+import "sync/atomic"
+
+type Config struct {
+	UseDefaultCategories bool `json:"use_default_categories"`
+}
+
+// nil-safe
+var ActiveConfig atomic.Pointer[Config]
+
+func init() {
+	ActiveConfig.Store(&Config{
+		UseDefaultCategories: true,
+	})
+}