feat(badges): medal info remote modal + grant notification

Add zibll-like badge list/single AJAX modals, Message notify on grant,
author-home/user-center entry points, and front wear handler.

assets/js/user-badges.js

@@ -139,6 +139,38 @@
     });
   }
 
+  
+  // Global wear handler (remote modal + UC modal).
+  document.addEventListener("click", function (e) {
+    var wearBtn = e.target.closest("[data-aksrt-badge-wear]");
+    if (!wearBtn) return;
+    // UC modal has its own handler when canWear on modal root.
+    var modalRoot = wearBtn.closest("[data-aksrt-badges-modal]");
+    if (modalRoot) return;
+    e.preventDefault();
+    var slug = wearBtn.getAttribute("data-aksrt-badge-wear") || "";
+    if (!slug) return;
+    wearBtn.disabled = true;
+    api("/users/me/badges/wear", {
+      method: "POST",
+      body: JSON.stringify({ slug: slug }),
+    }).then(function (r) {
+      if (!r.ok) {
+        toast((r.json && (r.json.message || (r.json.data && r.json.data.message))) || "佩戴失败", "error");
+        wearBtn.disabled = false;
+        return;
+      }
+      toast((r.json && r.json.message) || "已佩戴徽章", "success");
+      // Soft refresh modal content if remote host present.
+      try {
+        document.dispatchEvent(new CustomEvent("aksrt:remote-modal:close"));
+      } catch (_) {}
+    }).catch(function () {
+      toast("网络错误", "error");
+      wearBtn.disabled = false;
+    });
+  });
+
   if (document.readyState === 'loading') {
     document.addEventListener('DOMContentLoaded', init);
   } else {