fix: restore brainstorming feature with missing socket server and real-time events

memento-note/app/api/brainstorm/[sessionId]/convert/route.ts

@@ -2,6 +2,8 @@ import { NextRequest, NextResponse } from 'next/server'
 import prisma from '@/lib/prisma'
 import { auth } from '@/auth'
 import { z } from 'zod'
+import { logActivity } from '@/lib/brainstorm-collab'
+import { emitToSession } from '@/lib/socket-emit'
 
 const convertSchema = z.object({
   ideaId: z.string().min(1),
@@ -153,6 +155,15 @@ export async function POST(
 
     await prisma.$transaction(tagPromises)
 
+    await logActivity(sessionId, 'idea_converted', session.user.id, { ideaTitle: idea.title, ideaId: idea.id, noteId: note.id })
+
+    await emitToSession(sessionId, 'activity:new', {
+      action: 'idea_converted',
+      userId: session.user.id,
+      userName: session.user.name || 'Guest',
+      details: { ideaTitle: idea.title, ideaId: idea.id, noteId: note.id }
+    })
+
     return NextResponse.json({ success: true, data: note }, { status: 201 })
   } catch (error: any) {
     if (error instanceof z.ZodError) {

memento-note/app/api/brainstorm/[sessionId]/dismiss/route.ts

@@ -3,6 +3,7 @@ import prisma from '@/lib/prisma'
 import { auth } from '@/auth'
 import { z } from 'zod'
 import { verifyParticipant, logActivity, captureSnapshot } from '@/lib/brainstorm-collab'
+import { emitToSession } from '@/lib/socket-emit'
 
 const dismissSchema = z.object({
   ideaId: z.string().min(1),
@@ -56,6 +57,14 @@ export async function POST(
 
     await logActivity(sessionId, 'idea_dismissed', session.user.id, { ideaTitle: idea.title })
 
+    await emitToSession(sessionId, 'idea:dismissed', { ideaId, userId: session.user.id })
+    await emitToSession(sessionId, 'activity:new', {
+      action: 'idea_dismissed',
+      userId: session.user.id,
+      userName: session.user.name || 'Guest',
+      details: { ideaTitle: idea.title, ideaId }
+    })
+
     await captureSnapshot(sessionId, `Dismissed: ${idea.title}`).catch(() => {})
 
     return NextResponse.json({ success: true })

memento-note/app/api/brainstorm/[sessionId]/expand/route.ts

@@ -15,7 +15,9 @@ import {
   resolveAiContextUserId,
   sanitizeNotesForGuest,
   captureSnapshot,
+  logActivity,
 } from '@/lib/brainstorm-collab'
+import { emitToSession } from '@/lib/socket-emit'
 
 const expandSchema = z.object({
   ideaId: z.string().min(1),
@@ -332,6 +334,17 @@ export async function POST(
       for (const idea of updatedSession?.ideas || []) { (idea as any).creator = (idea as any).createdBy ? cm.get((idea as any).createdBy) || null : null }
     }
 
+    await logActivity(sessionId, 'wave_generated', session.user.id, { count: newIdeas.length, parentIdeaId: ideaId })
+
+    await emitToSession(sessionId, 'activity:new', {
+      action: 'wave_generated',
+      userId: session.user.id,
+      userName: session.user.name || 'Guest',
+      details: { count: newIdeas.length, parentIdeaId: ideaId }
+    })
+    // Trigger refetch for all participants
+    await emitToSession(sessionId, 'idea:added', {})
+
     await captureSnapshot(sessionId, `Wave expanded: ${parentIdea.title}`).catch(() => {})
 
     return NextResponse.json({ success: true, data: updatedSession })

memento-note/app/api/brainstorm/[sessionId]/finalize/route.ts

@@ -1,6 +1,8 @@
 import { NextRequest, NextResponse } from 'next/server'
 import prisma from '@/lib/prisma'
 import { auth } from '@/auth'
+import { logActivity } from '@/lib/brainstorm-collab'
+import { emitToSession } from '@/lib/socket-emit'
 
 export async function POST(
   request: NextRequest,
@@ -80,6 +82,15 @@ export async function POST(
     const dry = Array.from(noteImpactMap.values()).filter(n => n.acceptedCount === 0 && n.dismissedCount > 0).length
     const totalRefs = Array.from(noteImpactMap.values()).length
 
+    await logActivity(sessionId, 'session_finalized', session.user.id, { notesEnriched: fruitful, notesMarkedDry: dry })
+
+    await emitToSession(sessionId, 'activity:new', {
+      action: 'session_finalized',
+      userId: session.user.id,
+      userName: session.user.name || 'Guest',
+      details: { notesEnriched: fruitful, notesMarkedDry: dry }
+    })
+
     return NextResponse.json({
       success: true,
       impact: {

memento-note/app/api/brainstorm/[sessionId]/manual-idea/route.ts

@@ -177,6 +177,13 @@ export async function POST(
 
     await logActivity(sessionId, 'manual_idea', session.user.id, { ideaTitle: title, ideaId: idea.id })
 
+    await emitToSession(sessionId, 'activity:new', {
+      action: 'manual_idea',
+      userId: session.user.id,
+      userName: session.user.name || 'Guest',
+      details: { ideaTitle: title, ideaId: idea.id }
+    })
+
     await captureSnapshot(sessionId, `Manual idea: ${title}`).catch(() => {})
 
     // [UPDATE - TEMPS RÉEL] Retourner immédiatement, enrichissement IA en arrière-plan