style(frontend): Prettier config + one-time repo-wide format pass

Prettier 3 (pinned), printWidth 100, double quotes — chosen to match the existing
hand-formatting and minimise reflow. This commit is ONLY the mechanical format pass
(`prettier --write`) plus the config/ignore/scripts, isolated so it never pollutes a
feature diff. Verified behaviour-neutral: typecheck, eslint (0 errors), and vitest
all green before and after. See .git-blame-ignore-revs — `git blame` skips this sha.

frontend/src/components/Scheduler.tsx

@@ -58,7 +58,13 @@ function statusKey(job: SchedulerJob): keyof typeof DOT_CLASS {
   return "idle";
 }
 
-function StatusDot({ k, withTooltip = true }: { k: keyof typeof DOT_CLASS; withTooltip?: boolean }) {
+function StatusDot({
+  k,
+  withTooltip = true,
+}: {
+  k: keyof typeof DOT_CLASS;
+  withTooltip?: boolean;
+}) {
   const { t } = useTranslation();
   const dot = <span className={`inline-block w-2.5 h-2.5 rounded-full shrink-0 ${DOT_CLASS[k]}`} />;
   return withTooltip ? <Tooltip hint={t(`scheduler.dot.${k}`)}>{dot}</Tooltip> : dot;
@@ -101,7 +107,10 @@ function JobProgress({ p }: { p: SchedulerJob["progress"] }) {
       </div>
       <div className="h-1.5 rounded-full bg-border overflow-hidden">
         {pct != null ? (
-          <div className="h-full rounded-full bg-accent transition-[width]" style={{ width: `${pct}%` }} />
+          <div
+            className="h-full rounded-full bg-accent transition-[width]"
+            style={{ width: `${pct}%` }}
+          />
         ) : (
           // Indeterminate: total unknown, so a slim moving sliver instead of a fill.
           <div className="h-full w-1/3 rounded-full bg-accent animate-pulse" />
@@ -164,10 +173,19 @@ function JobRow({
                 className="w-16 bg-card border border-border rounded px-1.5 py-0.5 text-xs outline-none focus:border-accent"
               />
               <span className="text-muted text-xs">{t("scheduler.minutes")}</span>
-              <button onClick={save} disabled={saving} className="text-emerald-400 hover:opacity-80 disabled:opacity-50" aria-label={t("common.save")}>
+              <button
+                onClick={save}
+                disabled={saving}
+                className="text-emerald-400 hover:opacity-80 disabled:opacity-50"
+                aria-label={t("common.save")}
+              >
                 <Check className="w-3.5 h-3.5" />
               </button>
-              <button onClick={() => setEditing(false)} className="text-muted hover:text-fg" aria-label={t("common.cancel")}>
+              <button
+                onClick={() => setEditing(false)}
+                className="text-muted hover:text-fg"
+                aria-label={t("common.cancel")}
+              >
                 <X className="w-3.5 h-3.5" />
               </button>
             </span>
@@ -272,7 +290,9 @@ function MaintenanceSettings({
         </button>
       </div>
       <div className="text-[11px] text-muted mt-1.5">
-        {t("scheduler.maintenance.batchNote", { default: m.revalidate_batch_default.toLocaleString() })}
+        {t("scheduler.maintenance.batchNote", {
+          default: m.revalidate_batch_default.toLocaleString(),
+        })}
       </div>
     </div>
   );
@@ -296,7 +316,13 @@ function Stat({
       <div className="flex items-center gap-2 text-muted text-xs">
         <Icon className="w-4 h-4 shrink-0" />
         <Tooltip hint={hint ?? ""}>
-          <span className={hint ? "underline decoration-dotted decoration-muted/40 underline-offset-4 cursor-help" : ""}>
+          <span
+            className={
+              hint
+                ? "underline decoration-dotted decoration-muted/40 underline-offset-4 cursor-help"
+                : ""
+            }
+          >
             {label}
           </span>
         </Tooltip>
@@ -365,14 +391,20 @@ export default function Scheduler() {
   const runMut = useMutation({
     mutationFn: (jobId: string) => api.runSchedulerJob(jobId),
     onSuccess: (_d, jobId) => {
-      notify({ level: "success", message: t("scheduler.triggered", { job: t(`scheduler.jobs.${jobId}`, jobId) }) });
+      notify({
+        level: "success",
+        message: t("scheduler.triggered", { job: t(`scheduler.jobs.${jobId}`, jobId) }),
+      });
       qc.invalidateQueries({ queryKey: ["scheduler"] });
     },
   });
   const runAllMut = useMutation({
     mutationFn: () => api.runAllSchedulerJobs(),
     onSuccess: (res) => {
-      notify({ level: "success", message: t("scheduler.triggeredAll", { count: res.started.length }) });
+      notify({
+        level: "success",
+        message: t("scheduler.triggeredAll", { count: res.started.length }),
+      });
       qc.invalidateQueries({ queryKey: ["scheduler"] });
     },
   });
@@ -390,10 +422,8 @@ export default function Scheduler() {
     },
   });
 
-  if (q.isLoading && !data)
-    return <div className="p-8 text-muted">{t("scheduler.loading")}</div>;
-  if (!data)
-    return <div className="p-8 text-muted">{t("common.somethingWrong")}</div>;
+  if (q.isLoading && !data) return <div className="p-8 text-muted">{t("scheduler.loading")}</div>;
+  if (!data) return <div className="p-8 text-muted">{t("common.somethingWrong")}</div>;
 
   const quotaPct = data.quota.daily_budget
     ? Math.min(100, Math.round((data.quota.used_today / data.quota.daily_budget) * 100))
@@ -472,7 +502,9 @@ export default function Scheduler() {
 
       {/* Jobs */}
       <div>
-        <div className="text-xs uppercase tracking-wide text-muted mb-2">{t("scheduler.jobsTitle")}</div>
+        <div className="text-xs uppercase tracking-wide text-muted mb-2">
+          {t("scheduler.jobsTitle")}
+        </div>
         <StatusLegend />
         <div className="space-y-1.5">
           {data.jobs.map((job) => (
@@ -490,7 +522,9 @@ export default function Scheduler() {
 
       {/* Queue */}
       <div>
-        <div className="text-xs uppercase tracking-wide text-muted mb-2">{t("scheduler.queueTitle")}</div>
+        <div className="text-xs uppercase tracking-wide text-muted mb-2">
+          {t("scheduler.queueTitle")}
+        </div>
         <div className="grid grid-cols-2 sm:grid-cols-3 gap-2">
           <Stat
             icon={Database}
@@ -527,7 +561,9 @@ export default function Scheduler() {
 
       {/* Quota */}
       <div>
-        <div className="text-xs uppercase tracking-wide text-muted mb-2">{t("scheduler.quotaTitle")}</div>
+        <div className="text-xs uppercase tracking-wide text-muted mb-2">
+          {t("scheduler.quotaTitle")}
+        </div>
         <div className="glass-card rounded-xl p-4">
           <div className="flex items-center gap-2 text-sm">
             <Gauge className="w-4 h-4 text-muted shrink-0" />
@@ -557,7 +593,9 @@ export default function Scheduler() {
 
       {/* Maintenance settings */}
       <div>
-        <div className="text-xs uppercase tracking-wide text-muted mb-2">{t("scheduler.maintenance.title")}</div>
+        <div className="text-xs uppercase tracking-wide text-muted mb-2">
+          {t("scheduler.maintenance.title")}
+        </div>
         <MaintenanceSettings
           m={data.maintenance}
           onSave={(batch) => batchMut.mutate(batch)}