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/utils/dom.ts

@@ -9,8 +9,8 @@ type ElementsCallback<T extends Element> = (el: T) => Promisable<any>;
 type ElementsCallbackWithArgs = (el: Element, ...args: any[]) => Promisable<any>;
 
 function elementsCall(el: ElementArg, func: ElementsCallbackWithArgs, ...args: any[]): ArrayLikeIterable<Element> {
-  if (typeof el === 'string' || el instanceof String) {
-    el = document.querySelectorAll(el as string);
+  if (typeof el === 'string') {
+    el = document.querySelectorAll(el);
   }
   if (el instanceof Node) {
     func(el, ...args);
@@ -268,7 +268,6 @@ export function isElemVisible(el: HTMLElement): boolean {
 export function createElementFromHTML<T extends Element>(htmlString: string): T {
   htmlString = htmlString.trim();
   // There is no way to create some elements without a proper parent, jQuery's approach: https://github.com/jquery/jquery/blob/main/src/manipulation/wrapMap.js
-  // eslint-disable-next-line github/unescaped-html-literal
   if (htmlString.startsWith('<tr')) {
     const container = document.createElement('table');
     container.innerHTML = htmlString;

web_src/js/utils/time.ts

@@ -37,7 +37,7 @@ export function firstStartDateAfterDate(inputDate: Date): number {
   }
   const dayOfWeek = inputDate.getUTCDay();
   const daysUntilSunday = 7 - dayOfWeek;
-  const resultDate = new Date(inputDate.getTime());
+  const resultDate = new Date(inputDate);
   resultDate.setUTCDate(resultDate.getUTCDate() + daysUntilSunday);
   return resultDate.valueOf();
 }

web_src/js/utils/url.ts

@@ -54,6 +54,6 @@ export function linkifyURLs(html: string): string {
     const cleanUrl = trailingPunct ? url.slice(0, -trailingPunct[0].length) : url;
     const trailing = trailingPunct ? trailingPunct[0] : '';
     // safe because regexp only matches valid URLs (no quotes or angle brackets)
-    return `<a href="${cleanUrl}" target="_blank">${cleanUrl}</a>${trailing}`; // eslint-disable-line github/unescaped-html-literal
+    return `<a href="${cleanUrl}" target="_blank">${cleanUrl}</a>${trailing}`;
   });
 }