treefmt: apply prettier

Pure `nix fmt` output from the commit before this one — no hand edits.
203 files: 52 md, 42 tsx, 32 js, 32 css, 21 ts, 13 html, 8 json, 3 mjs.

Reproduce with `nix develop -c nix fmt` on the parent commit; the result
should be byte-identical to this tree.

None of the 13 `.prettierignore` entries appears here — verified by
intersecting the changed-file list against the ignore file, with a
control proving the intersection finds a match when one exists.

frontend/packages/agent/src/components/HeaderPill.tsx

@@ -8,22 +8,28 @@
 // count === 0` in the old page) and picking the inbox/todos tone so
 // the count reads amber/green like it always has (`Badge`'s `tone`
 // colours the value, which here is the count).
-import { Badge, type BadgeTone } from '@hive/shared/badge.js';
+import { Badge, type BadgeTone } from "@hive/shared/badge.js";
 
 export interface HeaderPillProps {
-  kind: 'inbox' | 'todos';
+  kind: "inbox" | "todos";
   icon: string;
   label: string;
   count: number;
   onClick: () => void;
 }
 
-const TONE: Record<HeaderPillProps['kind'], BadgeTone> = {
-  inbox: 'warning',
-  todos: 'positive',
+const TONE: Record<HeaderPillProps["kind"], BadgeTone> = {
+  inbox: "warning",
+  todos: "positive",
 };
 
-export function HeaderPill({ kind, icon, label, count, onClick }: HeaderPillProps) {
+export function HeaderPill({
+  kind,
+  icon,
+  label,
+  count,
+  onClick,
+}: HeaderPillProps) {
   if (count === 0) return null;
   return (
     <Badge