feat(07.1-05): user-tz on shared client components

- DetailModal: thread tz through resolveLabel(...) module helper +
  default export's 3 inline date/time calls.
- IntegrationStatusTabs: thread tz through fmtDate helper +
  VeeamTab sub-component prop.
- SyncScheduler: thread tz into closure-scoped formatDate helper.
- audit-log-table, user-table, user-sessions, active-sessions: inline
  toLocale calls in component body.
- analysis-view: useUserTimezone in AnalysisView; thread tz into 4
  toLocaleString calls.
- resolution-trend, volume-trend (recharts): module-scope fmtDate(iso)
  → fmtDate(iso, tz); useUserTimezone in named export; thread tz into
  axis tickFormatter + tooltip labelFormatter.
- ticket-detail-modal: thread tz into formatDate arrow inside
  TicketDetailModal.
- TimelineView: useUserTimezone; thread tz into 4 toLocale*String calls
  (hour/day/month/event-time formatters).
- ScoreCard: useUserTimezone in AggregateScoreCard; thread tz into the
  date-range latest call.
- addigy-tab: useUserTimezone in AddigyTab; thread tz into 2 inline calls.
- activity-sparkline: module-scope fmtHour(iso) → fmtHour(iso, tz);
  useUserTimezone in ActivitySparkline; update 3 callsites in title/aria.
- compliance-detail-table: thread tz from ComplianceDetailTable into
  ContractCoverageModal sub-component (2 inline date calls).
- company-backup-detail: module-scope formatDate(d) → formatDate(d, tz);
  useUserTimezone in CompanyBackupDetail; update 3 callsites.

Migrates 31 of 81 audit leak callsites.

components/dashboard/resolution-trend.tsx

@@ -12,6 +12,7 @@ import {
   XAxis,
   YAxis,
 } from 'recharts';
+import { useUserTimezone } from '@/lib/hooks/use-user-timezone';
 
 interface ResolutionPoint {
   date: string;
@@ -23,18 +24,19 @@ interface ResolutionTrendProps {
   height?: number;
 }
 
-function fmtDate(iso: string) {
-  return new Date(iso).toLocaleDateString(undefined, { month: 'short', day: 'numeric' });
+function fmtDate(iso: string, tz: string) {
+  return new Date(iso).toLocaleDateString(undefined, { month: 'short', day: 'numeric', timeZone: tz });
 }
 
 export function ResolutionTrend({ data, height = 180 }: ResolutionTrendProps) {
+  const tz = useUserTimezone();
   return (
     <ResponsiveContainer width="100%" height={height}>
       <LineChart data={data} margin={{ top: 4, right: 8, bottom: 4, left: 0 }}>
         <CartesianGrid stroke="var(--border)" strokeDasharray="2 4" vertical={false} />
         <XAxis
           dataKey="date"
-          tickFormatter={fmtDate}
+          tickFormatter={(iso: string) => fmtDate(iso, tz)}
           interval="preserveStartEnd"
           minTickGap={48}
           tick={{ fontSize: 11, fill: 'var(--muted-foreground)' }}
@@ -55,7 +57,7 @@ export function ResolutionTrend({ data, height = 180 }: ResolutionTrendProps) {
             borderRadius: 6,
             fontSize: 12,
           }}
-          labelFormatter={(value) => fmtDate(String(value))}
+          labelFormatter={(value) => fmtDate(String(value), tz)}
           formatter={(value) =>
             value == null ? ['—', 'avg'] : [`${Number(value).toFixed(1)} h`, 'avg']
           }

components/dashboard/volume-trend.tsx

@@ -13,6 +13,7 @@ import {
   XAxis,
   YAxis,
 } from 'recharts';
+import { useUserTimezone } from '@/lib/hooks/use-user-timezone';
 
 interface VolumePoint {
   date: string;
@@ -24,11 +25,12 @@ interface VolumeTrendProps {
   height?: number;
 }
 
-function fmtDate(iso: string) {
-  return new Date(iso).toLocaleDateString(undefined, { month: 'short', day: 'numeric' });
+function fmtDate(iso: string, tz: string) {
+  return new Date(iso).toLocaleDateString(undefined, { month: 'short', day: 'numeric', timeZone: tz });
 }
 
 export function VolumeTrend({ data, height = 180 }: VolumeTrendProps) {
+  const tz = useUserTimezone();
   return (
     <ResponsiveContainer width="100%" height={height}>
       <AreaChart data={data} margin={{ top: 4, right: 8, bottom: 4, left: 0 }}>
@@ -40,7 +42,7 @@ export function VolumeTrend({ data, height = 180 }: VolumeTrendProps) {
         </defs>
         <XAxis
           dataKey="date"
-          tickFormatter={fmtDate}
+          tickFormatter={(iso: string) => fmtDate(iso, tz)}
           interval="preserveStartEnd"
           minTickGap={48}
           tick={{ fontSize: 11, fill: 'var(--muted-foreground)' }}
@@ -61,7 +63,7 @@ export function VolumeTrend({ data, height = 180 }: VolumeTrendProps) {
             borderRadius: 6,
             fontSize: 12,
           }}
-          labelFormatter={(value) => fmtDate(String(value))}
+          labelFormatter={(value) => fmtDate(String(value), tz)}
           formatter={(value) => [value ?? 0, 'opened']}
         />
         <Area