feat(ui): redesign UI with Tailwind CSS, CodeMirror 6, and new layout

- Replace all hand-written CSS with Tailwind utility classes
- Upgrade CodeMirror 5 to CodeMirror 6 (scoped @codemirror/* packages)
- Redesign layout with responsive sidebar navigation using JSX/Mithril
- Flatten admin routes (e.g. /admin/presets -> /presets)
- Add "remember me" login option with 2-week persistent cookie
- Add delete confirmation dialogs across admin pages
- Upgrade esbuild from 0.21 to 0.27 and update browser targets
- Add Inter and Roboto Mono variable fonts with subset script

lib/common/expression/pagination.ts

@@ -1,8 +1,8 @@
 import { complement } from "espresso-iisojs";
-import { Expression } from "../../types";
-import normalize from "./normalize";
-import { Clause, SynthContext } from "./synth";
-import { and, or } from "./util";
+import { Expression } from "../../types.ts";
+import normalize from "./normalize.ts";
+import { Clause, SynthContext } from "./synth.ts";
+import { and, or } from "./util.ts";
 
 type Bookmark = Record<string, null | boolean | number | string>;