refactor: rename the theme brand and every identifier from AKSRT to Jio

Full-project rename. `git grep -i aksrt` is now empty apart from the
DBMigrator 3.3.0 changelog note that documents the rename itself.

Code identifiers
- PHP namespace AKSRT\ -> Jio\ (composer PSR-4 + 378 declarations)
- global constants AKSRT_* -> JIO_* (VERSION/DIR/URI, PAY_TYPE_*, CAPTCHA_*)
- procedural functions, hooks, options, meta keys, table names,
  cookies, query vars, ajax actions and nonces: aksrt_ -> jio_
- text domain aksrt -> jio; Theme Name -> Jio
- JS globals: aksrtData/aksrtAdminData/... -> jioData/jioAdminData/...,
  window.AKSRTCaptcha & friends -> window.JioCaptcha, Aksrt* -> Jio*
- Vue components Aks*.vue -> Jio*.vue (15 files renamed + imports)
- CSS classes/data-attrs/custom properties: aksrt- -> jio-
- REST namespace aksrt/v1 -> jio/v1 (incl. payment gateway callbacks)

Storage layer
- DB tables {prefix}aksrt_* -> {prefix}jio_*; SCHEMA_VERSION 3.2.0 -> 3.3.0
  so dbDelta creates the new names on install
- widget id_base aksrt_widget_* -> jio_widget_*
- uninstall.php drop list rebuilt from the actual migrator tables
  (dropped 3 stale entries, added the 17 missing ones)

Removed
- hardcoded https://api.aksrt.com/version.json default update endpoint;
  get_endpoint() now reads the 「更新端点」 setting and do_check() no-ops
  when it is empty

Files renamed: inc/helpers/aksrt-*.php -> jio-*.php (54),
assets/admin/src/components/form/Aks*.vue -> Jio*.vue (15).
Build artifacts regenerated: assets/css/build, assets/js/runtime,
assets/admin/build.

Verified: audit-psr4-paths errors=0, audit-admin-contracts errors=0
(warnings=56, unchanged baseline), 813/813 widget-system tests,
44/44 phpunit, php -l clean across all PHP.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

assets/js/core/misc.js

@@ -1,21 +1,21 @@
 /**
- * AKSRT Misc — image gradients and hidden content
+ * Jio Misc — image gradients and hidden content
  */
 (function () {
   "use strict";
 
   function renderGradientBackground(container) {
-    if (!container || container.dataset.aksrtGradientState || typeof window.Grade !== "function") return;
+    if (!container || container.dataset.jioGradientState || typeof window.Grade !== "function") return;
 
     var source = container.querySelector("img");
     if (!source || (!source.classList.contains("lazyloaded") && !(source.complete && source.naturalWidth > 0))) return;
 
-    container.dataset.aksrtGradientState = "loading";
+    container.dataset.jioGradientState = "loading";
     window.Grade(container, null, function (result) {
       var gradientData = result && result[0];
       var colors = gradientData && gradientData.gradientData;
       if (!gradientData || !colors || !colors[0] || !colors[1]) {
-        delete container.dataset.aksrtGradientState;
+        delete container.dataset.jioGradientState;
         return;
       }
 
@@ -27,7 +27,7 @@
 
       gradientData.element.classList.add("gradient-bg-loaded");
       gradientData.element.style.backgroundImage = "linear-gradient(135deg, " + color1 + ", " + color2 + ")";
-      container.dataset.aksrtGradientState = "loaded";
+      container.dataset.jioGradientState = "loaded";
     });
   }
 
@@ -65,16 +65,16 @@
 
   function initHiddenContent() {
     document.addEventListener("click", function (e) {
-      var btn = e.target.closest(".aksrt-hidden-content__submit-btn");
+      var btn = e.target.closest(".jio-hidden-content__submit-btn");
       if (!btn) return;
 
       e.preventDefault();
-      var wrapper = btn.closest(".aksrt-hidden-content--locked");
+      var wrapper = btn.closest(".jio-hidden-content--locked");
       if (!wrapper) return;
 
-      var mode = wrapper.getAttribute("data-aksrt-visibility-mode");
-      var pid = wrapper.getAttribute("data-aksrt-visibility-pid");
-      var input = wrapper.querySelector(".aksrt-hidden-content__password-input");
+      var mode = wrapper.getAttribute("data-jio-visibility-mode");
+      var pid = wrapper.getAttribute("data-jio-visibility-pid");
+      var input = wrapper.querySelector(".jio-hidden-content__password-input");
       var password = input ? input.value.trim() : "";
 
       if (mode === "password" && !password) {
@@ -83,8 +83,8 @@
       }
 
       var formData = new FormData();
-      formData.append("action", "aksrt_check_visibility");
-      formData.append("_nonce", (window.aksrtData && aksrtData.visibilityNonce) || "");
+      formData.append("action", "jio_check_visibility");
+      formData.append("_nonce", (window.jioData && jioData.visibilityNonce) || "");
       formData.append("mode", mode);
       formData.append("pid", pid);
       if (password) formData.append("password", password);
@@ -92,7 +92,7 @@
       btn.disabled = true;
       btn.textContent = "...";
 
-      fetch((window.aksrtData && aksrtData.ajaxUrl) || "/wp-admin/admin-ajax.php", {
+      fetch((window.jioData && jioData.ajaxUrl) || "/wp-admin/admin-ajax.php", {
         method: "POST",
         body: formData,
         credentials: "same-origin",
@@ -117,11 +117,11 @@
 
     // Handle Enter key on password input
     document.addEventListener("keydown", function (e) {
-      if (e.key === "Enter" && e.target.classList.contains("aksrt-hidden-content__password-input")) {
+      if (e.key === "Enter" && e.target.classList.contains("jio-hidden-content__password-input")) {
         e.preventDefault();
-        var wrapper = e.target.closest(".aksrt-hidden-content--locked");
+        var wrapper = e.target.closest(".jio-hidden-content--locked");
         if (wrapper) {
-          var btn = wrapper.querySelector(".aksrt-hidden-content__submit-btn");
+          var btn = wrapper.querySelector(".jio-hidden-content__submit-btn");
           if (btn) btn.click();
         }
       }