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/app/api/ai/enrich-from-resource/route.ts

@@ -3,6 +3,7 @@ import { auth } from '@/auth'
 import { getSystemConfig } from '@/lib/config'
 import { getTagsProvider } from '@/lib/ai/factory'
 import { hasUserAiConsent } from '@/lib/consent/server-consent'
+import { withAiQuota, handleQuotaHttpError } from '@/lib/ai-quota'
 
 export async function POST(request: NextRequest) {
   try {
@@ -32,7 +33,6 @@ export async function POST(request: NextRequest) {
     let prompt: string
 
     if (mode === 'complete') {
-      // Add missing info from resource without rewriting the existing note
       prompt = `You are an expert note editor. Your task is to enrich an existing note by adding relevant information from a provided resource, WITHOUT modifying or rewriting the existing content.
 
 LANGUAGE RULE: Respond in ${lang}. Match the language of the existing note.
@@ -56,7 +56,6 @@ INSTRUCTIONS:
 - Format the new content consistently with the existing note style and the requested FORMAT RULE
 - Respond ONLY with the enriched note content, no explanations`
     } else {
-      // Merge: intelligently rewrite integrating both sources
       prompt = `You are an expert note writer. Your task is to intelligently merge an existing note with a resource into a single, coherent, well-structured document.
 
 LANGUAGE RULE: Respond in ${lang}. Match the language of the existing note.
@@ -81,14 +80,19 @@ INSTRUCTIONS:
 - Respond ONLY with the merged content, no meta-commentary or explanations`
     }
 
-    const enrichedContent = await provider.generateText(prompt)
+    const enrichedContent = await withAiQuota(
+      session.user.id,
+      'reformulate',
+      () => provider.generateText(prompt),
+      { lane: 'chat' },
+    )
 
     return NextResponse.json({ enrichedContent: enrichedContent.trim() })
-  } catch (error: any) {
+  } catch (error: unknown) {
+    const quotaResp = handleQuotaHttpError(error)
+    if (quotaResp) return quotaResp
     console.error('[enrich-from-resource] Error:', error)
-    return NextResponse.json(
-      { error: error.message || 'Failed to enrich content' },
-      { status: 500 }
-    )
+    const message = error instanceof Error ? error.message : 'Failed to enrich content'
+    return NextResponse.json({ error: message }, { status: 500 })
   }
 }