fix(quotas): unifier le décompte IA (BYOK, rollback) et combler les fuites

Centralise la réserve via ai-quota, corrige admin unavailable (-1), brancher les routes sans quota et le host-pays brainstorm, avec usage-meter élargi, noms de clusters, MCP et ajustements dashboard/insights.

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

memento-note/components/dashboard-view.tsx

@@ -29,6 +29,7 @@ import {
 } from '@/components/dashboard-path-widgets'
 import type { DashboardPath } from '@/lib/dashboard/path-types'
 import { buildFastPathsFromBriefing } from '@/lib/dashboard/paths-fast'
+import { emitAiUsageChanged } from '@/lib/ai-usage-sync'
 import {
   DashboardInboxWidget,
   DashboardRevisionWidget,
@@ -192,7 +193,8 @@ function localeForLanguage(language: string): string {
   return map[language] || language
 }
 
-function stripHtml(html: string): string {
+function stripHtml(html: string | null | undefined): string {
+  if (!html) return ''
   return html.replace(/<[^>]+>/g, ' ').replace(/&nbsp;/g, ' ').replace(/\s+/g, ' ').trim()
 }
 
@@ -293,7 +295,10 @@ export function DashboardView({ onNoteSelect }: DashboardViewProps) {
   const loadSentiment = useCallback(async () => {
     try {
       const res = await fetch('/api/briefing/sentiment', { cache: 'no-store' })
-      if (res.ok) setSentiment(await res.json())
+      if (res.ok) {
+        setSentiment(await res.json())
+        emitAiUsageChanged()
+      }
     } catch {
       /* widget sentiment en état vide */
     } finally {
@@ -322,15 +327,15 @@ export function DashboardView({ onNoteSelect }: DashboardViewProps) {
     fetch('/api/flashcards/stats', { cache: 'no-store' })
       .then(r => r.ok ? r.json() : null)
       .then(json => {
-        if (json) {
-          setFlashcardStats({
-            retentionRate: json.retentionRate ?? 0,
-            streak: json.streak ?? 0,
-            totalCards: json.totalCards ?? 0,
-          })
-        }
+        setFlashcardStats({
+          retentionRate: json?.retentionRate ?? 0,
+          streak: json?.streak ?? 0,
+          totalCards: json?.totalCards ?? 0,
+        })
+      })
+      .catch(() => {
+        setFlashcardStats({ retentionRate: 0, streak: 0, totalCards: 0 })
       })
-      .catch(() => {})
   }, [loadBriefing, loadMindMap])
 
   // Pistes rapides dès le briefing, puis enrichissement en arrière-plan
@@ -482,6 +487,7 @@ export function DashboardView({ onNoteSelect }: DashboardViewProps) {
       if (!res.ok) throw new Error(json.error)
       if (json.insight) {
         await Promise.all([loadBriefing(), loadPaths()])
+        emitAiUsageChanged()
         toast.success(t('homeDashboard.echoFound'))
       } else {
         toast.info(t('homeDashboard.echoNone'))
@@ -789,6 +795,7 @@ export function DashboardView({ onNoteSelect }: DashboardViewProps) {
             retentionRate={flashcardStats?.retentionRate ?? 0}
             streak={flashcardStats?.streak ?? 0}
             totalCards={flashcardStats?.totalCards ?? 0}
+            dueCount={dueFlashcards}
             loading={!flashcardStats}
             onOpen={() => router.push('/revision')}
           />,
@@ -799,6 +806,14 @@ export function DashboardView({ onNoteSelect }: DashboardViewProps) {
             notes={resumeNotes}
             loading={briefingLoading}
             onSelect={onNoteSelect}
+            onCaptureFocus={() => {
+              document.getElementById('dashboard-widget-capture')?.scrollIntoView({
+                behavior: prefersReducedMotion ? 'auto' : 'smooth',
+                block: 'center',
+              })
+              const ta = document.querySelector<HTMLTextAreaElement>('#dashboard-widget-capture textarea')
+              ta?.focus()
+            }}
             formatRelativeTime={relTime}
             prefersReducedMotion={!!prefersReducedMotion}
           />,
@@ -1005,7 +1020,7 @@ export function DashboardView({ onNoteSelect }: DashboardViewProps) {
     <div className="h-full w-full bg-[#F9F8F6] dark:bg-[#0D0D0D] overflow-y-auto custom-scrollbar relative">
       <div className="absolute inset-0 bg-[linear-gradient(to_right,#80808005_1px,transparent_1px),linear-gradient(to_bottom,#80808005_1px,transparent_1px)] bg-[size:28px_28px] pointer-events-none z-0" />
 
-      <div className="max-w-6xl mx-auto px-4 sm:px-6 lg:px-10 py-6 sm:py-8 relative z-10">
+      <div className="w-full px-4 sm:px-6 lg:px-8 xl:px-10 2xl:px-12 py-6 sm:py-8 relative z-10">
         {/* ── En-tête : orientation en 2 secondes ── */}
         <header className="mb-5">
           <div className="flex flex-col sm:flex-row sm:items-end sm:justify-between gap-2 pb-4 border-b border-border/20">