feat(web): mobile dashboard UX polish (#28127)

* feat(web): mobile dashboard UX polish

Bottom sheets for sidebar theme/language pickers on narrow viewports with
enter/exit animation and drag-to-close; inline header badges beside titles;
bottom padding on the route outlet for scroll clearance; profiles loading uses a
unicode braille spinner; align profile/cron card actions to the top; viewport-fit
cover and supporting layout tweaks across dashboard pages.

Co-authored-by: Cursor <cursoragent@cursor.com>

* Fix Nix web npm hash and mobile sheet accessibility.

Align fetchNpmDeps in nix/web.nix with web/package-lock.json for CI. Improve BottomPickSheet backdrop labeling, avoid aria-hidden on the dialog during exit animation, and wire theme/language sheets with listbox semantics and localized dismiss labels.

Co-authored-by: Cursor <cursoragent@cursor.com>

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Co-authored-by: Cursor <cursoragent@cursor.com>

web/src/pages/AnalyticsPage.tsx

@@ -439,7 +439,7 @@ export default function AnalyticsPage() {
     );
     setEnd(
       showTokens === false ? null : (
-        <div className="flex w-full min-w-0 flex-wrap items-center justify-end gap-2 sm:gap-2">
+        <div className="flex w-full min-w-0 flex-wrap items-center justify-start gap-2 sm:gap-2">
           <div className="flex flex-wrap items-center gap-1.5">
             {PERIODS.map((p) => (
               <Button