fix(admin): replicate reference advanced-filter settings page 1:1

- Rewrite post_list/filter schema (PHP + JS) with the reference theme's
  field set, order, defaults and dependencies; topics fields excluded
  (no topics taxonomy), AKSRT private filter_* toggles dropped
- Support dynamic checkbox options in AksField (options as formData key)
  so cat_custom_filter.custom_filters lists the custom_filter dimensions
- Map PostDisplay filter settings to the new keys without legacy fallback;
  cat_custom_filter now carries lists/dropdown fieldsets and array filters
- Wire the archive chain to reference semantics: cat_custom_filter
  overrides per-category filter projects, custom_filter_show gates the
  default display, dimension chip groups render on category/tag archives
- Filter archive queries (main query + AJAX endpoint) by _aksrt_cf_{key}
  meta with exact-quoted LIKE matching
- Add advanced-filter settings reference contract test

assets/js/core/archive.js

@@ -22,6 +22,7 @@
     var state = {
       filter_cat: "",
       filter_tag: "",
+      custom: {},
       sort: "date",
       page: 1
     };
@@ -32,6 +33,14 @@
     if (activeTag) state.filter_tag = activeTag.dataset.filterTag || "";
     var activeSort = bar.querySelector("[data-filter-sort].is-active");
     if (activeSort) state.sort = activeSort.dataset.filterSort || "date";
+    // 自定义高级筛选维度：以当前 URL 参数为准（SSR active 状态与 URL 一致）。
+    if (bar.querySelector("[data-filter-dim]")) {
+      new URLSearchParams(window.location.search).forEach(function (value, key) {
+        if (bar.querySelector('[data-filter-dim="' + key + '"]')) {
+          state.custom[key] = value;
+        }
+      });
+    }
 
     function buildUrl() {
       var params = new URLSearchParams();
@@ -39,6 +48,7 @@
       params.set("term_id", String(termId));
       if (state.filter_cat) params.set("filter_cat", state.filter_cat);
       if (state.filter_tag) params.set("filter_tag", state.filter_tag);
+      if (Object.keys(state.custom).length) params.set("custom_filter", JSON.stringify(state.custom));
 
       params.set("sort", state.sort || "date");
       params.set("page", String(state.page));
@@ -55,6 +65,10 @@
       bar.querySelectorAll("[data-filter-sort]").forEach(function (el) {
         el.classList.toggle("is-active", (el.dataset.filterSort || "date") === state.sort);
       });
+      bar.querySelectorAll("[data-filter-dim]").forEach(function (el) {
+        var current = state.custom[el.dataset.filterDim] || "";
+        el.classList.toggle("is-active", (el.dataset.filterDimValue || "") !== "" && (el.dataset.filterDimValue || "") === current);
+      });
     }
 
     function showLoading() {
@@ -110,8 +124,14 @@
             url.searchParams.delete("paged");
             url.searchParams.delete("aksrt_filter_cat");
             url.searchParams.delete("aksrt_filter_tag");
+            bar.querySelectorAll("[data-filter-dim]").forEach(function (el) {
+              url.searchParams.delete(el.dataset.filterDim);
+            });
             if (state.filter_cat) url.searchParams.set("aksrt_filter_cat", state.filter_cat);
             if (state.filter_tag) url.searchParams.set("aksrt_filter_tag", state.filter_tag);
+            Object.keys(state.custom).forEach(function (key) {
+              url.searchParams.set(key, state.custom[key]);
+            });
             if (state.sort) url.searchParams.set("orderby", state.sort);
             if (state.page > 1) url.searchParams.set("paged", String(state.page));
             history.pushState({ aksrtArchive: true, state: Object.assign({}, state) }, "", url.toString());
@@ -123,7 +143,7 @@
     }
 
     bar.addEventListener("click", function (e) {
-      var chip = e.target.closest("[data-filter-cat], [data-filter-tag], [data-filter-sort]");
+      var chip = e.target.closest("[data-filter-cat], [data-filter-tag], [data-filter-sort], [data-filter-dim]");
       if (!chip) return;
       e.preventDefault();
 
@@ -149,6 +169,18 @@
           changed = true;
         }
       }
+      if (chip.dataset.filterDim !== undefined) {
+        var dimKey = chip.dataset.filterDim;
+        var dimValue = chip.dataset.filterDimValue || "";
+        if (dimValue !== (state.custom[dimKey] || "")) {
+          if (dimValue === "") {
+            delete state.custom[dimKey];
+          } else {
+            state.custom[dimKey] = dimValue;
+          }
+          changed = true;
+        }
+      }
 
       if (changed) {
         state.page = 1;