feat(frontend): content micro-animations — stagger, button press, toast polish

- animate-stagger utility + staggerDelay() helper; lists now rise in sequence
  (recordings grid, moderation rows, message list, media queue, dashboard tiles).
- Button gets a subtle active:scale-[0.97] press feedback.
- Toaster: toast-in slide-up, tone-accent border, rounded hover-close target.
- All motion is reduced-motion aware (killed under prefers-reduced-motion).

services/frontend/src/app/(dashboard)/dashboard/view.tsx

@@ -29,6 +29,7 @@ import {
 } from "@/hooks";
 import { formatNumber } from "@/lib/format";
 import type { DashboardStats } from "@/lib/types";
+import { staggerDelay } from "@/lib/utils";
 
 function deriveSignal(stats?: DashboardStats) {
   if (!stats) return { tone: "signal" as const, label: "nominal" };
@@ -113,23 +114,31 @@ export function DashboardView({
             value={formatNumber(s.total_messages)}
             tone="signal"
             icon={<MessageSquare className="size-3.5" />}
+            className="animate-stagger"
+            style={staggerDelay(0)}
           />
           <MetricTile
             label="Flagged"
             value={formatNumber(s.total_flagged)}
             tone={s.total_flagged > 0 ? "vermilion" : "neutral"}
             hint={`${s.today_flagged} today`}
+            className="animate-stagger"
+            style={staggerDelay(1)}
           />
           <MetricTile
             label="Active 24h"
             value={formatNumber(s.active_users_24h)}
             tone="signal"
             icon={<Users className="size-3.5" />}
+            className="animate-stagger"
+            style={staggerDelay(2)}
           />
           <MetricTile
             label="Voice clips"
             value={formatNumber(s.total_voice_recordings)}
             icon={<Mic className="size-3.5" />}
+            className="animate-stagger"
+            style={staggerDelay(3)}
           />
         </div>
       </GlassPanel>

services/frontend/src/app/(dashboard)/media/view.tsx

@@ -28,6 +28,7 @@ import {
 } from "@/hooks";
 import { formatDuration } from "@/lib/format";
 import type { MediaState } from "@/lib/types";
+import { staggerDelay } from "@/lib/utils";
 import { useWebSocket } from "@/lib/ws/context";
 
 export function MediaView({ initialStatus }: { initialStatus?: MediaState }) {
@@ -205,7 +206,8 @@ export function MediaView({ initialStatus }: { initialStatus?: MediaState }) {
             {queueList.map((item, i) => (
               <div
                 key={`${item.source}-${i}`}
-                className="flex items-center gap-3 rounded-[10px] border border-hairline bg-white/5 px-3 py-2.5"
+                className="animate-stagger flex items-center gap-3 rounded-[10px] border border-hairline bg-white/5 px-3 py-2.5"
+                style={staggerDelay(i)}
               >
                 <span className="mono w-5 text-ink-faint">{i + 1}</span>
                 <div className="min-w-0 flex-1">

services/frontend/src/app/(dashboard)/messages/view.tsx

@@ -45,6 +45,7 @@ import {
   safeParseJsonArray,
 } from "@/lib/format";
 import type { AiStatus, Guild, MessageRecord } from "@/lib/types";
+import { staggerDelay } from "@/lib/utils";
 import { useWebSocket } from "@/lib/ws/context";
 
 export function MessagesView({
@@ -254,16 +255,17 @@ export function MessagesView({
                   }
                 }}
               >
-                {display.map((m) => (
+                {display.map((m, i) => (
                   <button
                     key={m.id}
                     type="button"
                     onClick={() => setSelected(m.id)}
-                    className={`flex w-full items-start gap-3 rounded-[12px] border p-3 text-left transition-colors ${
+                    className={`animate-stagger flex w-full items-start gap-3 rounded-[12px] border p-3 text-left transition-colors ${
                       selected === m.id
                         ? "border-signal/40 bg-signal/8"
                         : "border-hairline bg-white/[0.03] hover:bg-white/[0.06]"
                     }`}
+                    style={staggerDelay(i)}
                   >
                     <Avatar src={m.avatar_url} name={m.username} size={34} />
                     <div className="min-w-0 flex-1">

services/frontend/src/app/(dashboard)/moderation/view.tsx

@@ -37,6 +37,7 @@ import type {
   ModerationActionType,
   ModerationStats,
 } from "@/lib/types";
+import { staggerDelay } from "@/lib/utils";
 
 const ACTION_ICON: Record<ModerationActionType, React.ReactNode> = {
   delete_message: <Trash2 className="size-3.5" />,
@@ -217,8 +218,8 @@ export function ModerationView({
             }
           />
           <div className="max-h-[60vh] space-y-1.5 overflow-y-auto pr-1">
-            {(actions ?? []).map((a) => (
-              <ActionRow key={a.id} a={a} />
+            {(actions ?? []).map((a, i) => (
+              <ActionRow key={a.id} a={a} index={i} />
             ))}
             {(actions ?? []).length === 0 && (
               <div className="py-10 text-center text-xs text-ink-faint">
@@ -232,7 +233,7 @@ export function ModerationView({
   );
 }
 
-function ActionRow({ a }: { a: ModerationAction }) {
+function ActionRow({ a, index = 0 }: { a: ModerationAction; index?: number }) {
   const tone =
     a.status === "executed"
       ? "signal"
@@ -243,7 +244,10 @@ function ActionRow({ a }: { a: ModerationAction }) {
     <AlertTriangle className="size-3.5" />
   );
   return (
-    <div className="flex items-start gap-3 rounded-[10px] border border-hairline bg-white/[0.03] p-3">
+    <div
+      className="animate-stagger flex items-start gap-3 rounded-[10px] border border-hairline bg-white/[0.03] p-3"
+      style={staggerDelay(index)}
+    >
       <span
         className={`mt-0.5 ${tone === "vermilion" ? "text-vermilion" : tone === "amber" ? "text-amber" : "text-signal"}`}
       >

services/frontend/src/app/(dashboard)/recordings/view.tsx

@@ -20,6 +20,7 @@ import {
 } from "@/hooks";
 import { formatBytes, formatRelativeTime } from "@/lib/format";
 import type { VoiceRecording } from "@/lib/types";
+import { staggerDelay } from "@/lib/utils";
 import { useWebSocket } from "@/lib/ws/context";
 
 export function RecordingsView({
@@ -94,12 +95,13 @@ export function RecordingsView({
         />
       ) : (
         <div className="grid gap-3 sm:grid-cols-2 xl:grid-cols-3">
-          {(items ?? []).map((r) => {
+          {(items ?? []).map((r, i) => {
             const up = uploadStatus(r);
             return (
               <GlassCard
                 key={r.id}
-                className="flex flex-col gap-3 transition-colors hover:bg-white/[0.06]"
+                className="animate-stagger flex flex-col gap-3 transition-colors hover:bg-white/[0.06]"
+                style={staggerDelay(i)}
               >
                 <div className="flex items-center gap-3">
                   <Avatar src={r.avatar_url} name={r.username} size={38} />