chore: upgrade eslint plugins, remove eslint-plugin-github

- Upgrade `typescript-eslint` to 8.61 and `eslint-plugin-unicorn` to 65,
  configuring the rules introduced in unicorn 65.
- Remove `eslint-plugin-github` and its workarounds: rules, the type-stub
  module declaration, the pnpm peer-dependency override, and the in-code
  `eslint-disable` comments that referenced its rules.
- Remove rules deprecated or deleted in their plugins and switch to their
  replacements (e.g. `prefer-single-call`, `no-object-constructor`,
  `id-denylist`, `no-unnecessary-slice-end`).
- Apply the resulting autofixes, mainly wrapping interpolated values in CSS
  selectors with `CSS.escape()`.

Assisted-by: claude-code:opus-4.8

web_src/js/features/admin/users.ts

@@ -5,14 +5,14 @@ export function initAdminUserListSearchForm(): void {
   const form = document.querySelector<HTMLFormElement>('#user-list-search-form');
   if (!form) return;
 
-  for (const button of form.querySelectorAll(`button[name=sort][value="${searchForm.SortType}"]`)) {
+  for (const button of form.querySelectorAll(`button[name=sort][value="${CSS.escape(searchForm.SortType)}"]`)) {
     button.classList.add('active');
   }
 
   if (searchForm.StatusFilterMap) {
     for (const [k, v] of Object.entries(searchForm.StatusFilterMap)) {
       if (!v) continue;
-      for (const input of form.querySelectorAll<HTMLInputElement>(`input[name="status_filter[${k}]"][value="${v}"]`)) {
+      for (const input of form.querySelectorAll<HTMLInputElement>(`input[name="status_filter[${CSS.escape(k)}]"][value="${CSS.escape(v)}"]`)) {
         input.checked = true;
       }
     }