fix: brainstorm infinite loop, ghost cursor, embedding ::vector cast, semantic search, billing stats, usage meter accordion

- Fix useBrainstormSocket: stable guestId via useRef, remove setState in cleanup
- Fix GhostCursor: direct DOM manipulation via refs, no useState re-renders
- Fix all SQL embedding queries: add ::vector cast on text columns
- Fix embedding truncation to 15000 chars (under 8192 token limit)
- Fix NoteEmbedding INSERT: remove non-existent updatedAt column
- Fix billing page: show all quota stats in grid instead of single metric
- Fix usage meter: accordion expand/collapse, per-feature detail
- Fix semantic search: rebuild 103 note embeddings, ::vector cast on vectorSearch
- Fix brainstorm expand/manual-idea/create: ::vector cast on embedding SQL

memento-note/app/actions/admin.ts

@@ -5,6 +5,7 @@ import prisma from '@/lib/prisma'
 import { auth } from '@/auth'
 import bcrypt from 'bcryptjs'
 import { z } from 'zod'
+import { SubscriptionTier, SubscriptionStatus } from '@prisma/client'
 
 // Schema pour la création d'utilisateur
 const CreateUserSchema = z.object({
@@ -33,6 +34,13 @@ export async function getUsers() {
         email: true,
         role: true,
         createdAt: true,
+        subscription: {
+          select: {
+            tier: true,
+            status: true,
+            currentPeriodEnd: true,
+          }
+        }
       }
     })
     return users
@@ -118,3 +126,39 @@ export async function updateUserRole(userId: string, newRole: string) {
     throw new Error('Failed to update role')
   }
 }
+
+export async function updateUserSubscription(userId: string, tier: string) {
+  await checkAdmin()
+
+  const validTiers: string[] = ['BASIC', 'PRO', 'BUSINESS', 'ENTERPRISE']
+  if (!validTiers.includes(tier)) {
+    throw new Error('Invalid tier')
+  }
+
+  try {
+    const now = new Date()
+    const periodEnd = new Date(now)
+    periodEnd.setFullYear(periodEnd.getFullYear() + 1)
+
+    await prisma.subscription.upsert({
+      where: { userId },
+      update: {
+        tier: tier as SubscriptionTier,
+        status: 'ACTIVE',
+        currentPeriodStart: now,
+        currentPeriodEnd: periodEnd,
+      },
+      create: {
+        userId,
+        tier: tier as SubscriptionTier,
+        status: 'ACTIVE' as SubscriptionStatus,
+        currentPeriodStart: now,
+        currentPeriodEnd: periodEnd,
+      },
+    })
+    revalidatePath('/admin')
+    return { success: true }
+  } catch (error) {
+    throw new Error('Failed to update subscription')
+  }
+}

memento-note/app/actions/auth.ts

@@ -11,7 +11,7 @@ export async function authenticate(
     await signIn('credentials', {
       email: formData.get('email'),
       password: formData.get('password'),
-      redirectTo: '/',
+      redirectTo: '/home',
     });
   } catch (error) {
     if (error instanceof AuthError) {

memento-note/app/actions/brainstorm.ts

@@ -128,7 +128,7 @@ export async function respondToBrainstormShare(
     })
   }
 
-  revalidatePath('/')
+  revalidatePath('/home')
   return { success: true }
 }
 
@@ -193,6 +193,6 @@ export async function removeBrainstormShare(sessionId: string) {
     data: { status: 'removed' },
   })
 
-  revalidatePath('/')
+  revalidatePath('/home')
   return { success: true }
 }

memento-note/app/actions/note-illustration.ts

@@ -3,7 +3,7 @@
 import DOMPurify from 'isomorphic-dompurify'
 import { auth } from '@/auth'
 import { prisma } from '@/lib/prisma'
-import { getAIProvider } from '@/lib/ai/factory'
+import { getChatProvider } from '@/lib/ai/factory'
 import { getSystemConfig } from '@/lib/config'
 import { getAISettings } from '@/app/actions/ai-settings'
 import { revalidatePath } from 'next/cache'
@@ -58,18 +58,47 @@ export async function generateNoteIllustrationSvg(noteId: string): Promise<{ ok:
     }
 
     const config = await getSystemConfig()
-    const provider = getAIProvider(config)
+    const provider = getChatProvider(config)
 
-    const prompt = `Tu es un designer minimaliste. Produis UN SEUL document SVG valide pour une vignette de carte note.
-Contraintes strictes:
-- viewBox="0 0 224 168" (rapport 4:3), pas de width/height fixes en px sur la racine ou width="100%" height="100%"
-- Style architectural / papier, 2–4 formes géométriques ou lignes, palette sobre (noir/gris/une couleur douce), pas de texte lisible
-- AUCUN script, AUCUNE balise foreignObject, AUCUN lien externe, AUCUN attribut on*
-- Réponds UNIQUEMENT avec le fragment SVG (commence par <svg ...> et finit par </svg>), sans markdown ni commentaire.
+    const prompt = `Create a small SVG thumbnail that VISUALLY REPRESENTS this note's topic.
 
-Thème à suggérer visuellement (abstrait, pas littéral):
-Titre: ${plainTitle || '(sans titre)'}
-Extrait: ${plainBody.slice(0, 400)}`
+OUTPUT: Only raw SVG markup. No markdown, no code fences, no comments. Start with <svg and end with </svg>.
+
+SPECIFICATIONS:
+- viewBox="0 0 224 168", NO fixed width/height attributes
+- Maximum 1000 bytes
+- Background: soft warm beige (#F5F0E8) or transparent
+- Color palette (pick 2-3): warm charcoal (#2C2C2C), slate gray (#6B7280), soft sage (#A8B5A0), muted ochre (#C4A882), dusty rose (#C9A9A6), teal (#5F9EA0), burgundy (#8B4513)
+- NO text, NO scripts, NO foreignObject, NO external links
+
+CRITICAL: The illustration MUST be recognizably related to the topic.
+Think of it like an ICON or PICTOGRAM for the title. Not abstract random shapes.
+
+TOPIC: "${plainTitle || 'untitled'}"
+
+How to illustrate this topic (pick the BEST match):
+- If the topic is about CODE/DEV: Show angle brackets <>, curly braces {}, a terminal window shape, or circuit-like lines
+- If the topic is about MUSIC: Show sound waves, musical notes shapes, or speaker icon
+- If the topic is about FOOD/COOKING: Show a pot shape, utensils, or plate
+- If the topic is about TRAVEL: Show a path/road, mountain peaks, or compass
+- If the topic is about SCIENCE: Show atom orbits, flask/beaker, or molecule bonds
+- If the topic is about BUSINESS/FINANCE: Show ascending chart lines, coins, or briefcase
+- If the topic is about HEALTH: Show heart shape, pulse line, or leaf
+- If the topic is about EDUCATION: Show book shape, graduation cap, or pencil
+- If the topic is about NATURE: Show tree, mountain, water wave, or sun
+- If the topic is about DESIGN/ART: Show palette, brush stroke, or frame
+- If the topic is about PEOPLE/TEAM: Show overlapping circles, handshake, or connected nodes
+- If the topic is about ARCHITECTURE: Show building outline, blueprint grid, or columns
+- Otherwise: Extract the KEY CONCEPT from the title and draw its SIMPLEST iconic representation
+
+TECHNICAL RULES:
+- Use simple shapes: <circle>, <rect>, <line>, <path>, <ellipse>, <polygon>, <g>
+- Keep it FLAT and MINIMAL — 2-4 elements max
+- Use opacity for depth (0.3-0.8)
+- The icon should be immediately recognizable even at small size
+
+Additional context from the note:
+${plainBody.slice(0, 200)}`
 
     const raw = await provider.generateText(prompt)
     const extracted = extractSvgSnippet(raw)
@@ -90,7 +119,7 @@ Extrait: ${plainBody.slice(0, 400)}`
       },
     })
 
-    revalidatePath('/')
+    revalidatePath('/home')
     return { ok: true }
   } catch (e) {
     console.error('[note-illustration]', e)

memento-note/app/actions/notes.ts

@@ -434,7 +434,7 @@ export async function restoreNoteVersion(noteId: string, historyEntryId: string)
     },
   })
 
-  revalidatePath('/')
+  revalidatePath('/home')
 
   return parseNote(restored)
 }
@@ -603,7 +603,7 @@ export async function createNote(data: {
 
     if (!data.skipRevalidation) {
       // Revalidate main page (handles both inbox and notebook views via query params)
-      revalidatePath('/')
+      revalidatePath('/home')
     }
 
     // Fire-and-forget: run AI operations in background without blocking the response
@@ -690,7 +690,7 @@ export async function createNote(data: {
                 const merged = [...new Set([...existingNames, ...appliedLabels])]
                 await syncNoteLabels(noteId, merged, notebookId ?? null, userId)
                 if (!data.skipRevalidation) {
-                  revalidatePath('/')
+                  revalidatePath('/home')
                 }
               }
             }
@@ -853,7 +853,7 @@ export async function updateNote(id: string, data: {
 
     if (!options?.skipRevalidation) {
       try { revalidatePath(`/note/${id}`) } catch {}
-      try { revalidatePath('/') } catch {}
+      try { revalidatePath('/home') } catch {}
     }
 
     if (isStructuralChange) {
@@ -895,7 +895,7 @@ export async function deleteNote(id: string, options?: { skipRevalidation?: bool
     })
 
     if (!options?.skipRevalidation) {
-      revalidatePath('/')
+      revalidatePath('/home')
     }
     return { success: true }
   } catch (error) {
@@ -915,7 +915,7 @@ export async function trashNote(id: string, options?: { skipRevalidation?: boole
       data: { trashedAt: new Date() }
     })
     if (!options?.skipRevalidation) {
-      revalidatePath('/')
+      revalidatePath('/home')
     }
     return { success: true }
   } catch (error) {
@@ -933,7 +933,7 @@ export async function restoreNote(id: string) {
       where: { id, userId: session.user.id },
       data: { trashedAt: null }
     })
-    revalidatePath('/')
+    revalidatePath('/home')
     revalidatePath('/trash')
     return { success: true }
   } catch (error) {
@@ -984,7 +984,7 @@ export async function permanentDeleteNote(id: string) {
 
     await syncLabels(session.user.id, [])
     revalidatePath('/trash')
-    revalidatePath('/')
+    revalidatePath('/home')
     return { success: true }
   } catch (error) {
     console.error('Error permanently deleting note:', error)
@@ -1028,7 +1028,7 @@ export async function emptyTrash() {
 
     await syncLabels(session.user.id, [])
     revalidatePath('/trash')
-    revalidatePath('/')
+    revalidatePath('/home')
     return { success: true }
   } catch (error) {
     console.error('Error emptying trash:', error)
@@ -1182,7 +1182,7 @@ export async function reorderNotes(draggedId: string, targetId: string) {
       prisma.note.update({ where: { id: note.id }, data: { order: index } })
     )
     await prisma.$transaction(updates)
-    revalidatePath('/')
+    revalidatePath('/home')
     return { success: true }
   } catch (error) {
     throw new Error('Failed to reorder notes')
@@ -1198,7 +1198,7 @@ export async function updateFullOrder(ids: string[]) {
       prisma.note.update({ where: { id, userId }, data: { order: index } })
     )
     await prisma.$transaction(updates)
-    revalidatePath('/')
+    revalidatePath('/home')
     return { success: true }
   } catch (error) {
     throw new Error('Failed to update order')
@@ -1314,7 +1314,7 @@ export async function cleanupAllOrphans() {
       }
     }
 
-    revalidatePath('/')
+    revalidatePath('/home')
     revalidatePath('/settings')
     return {
       success: true,
@@ -1487,7 +1487,7 @@ export async function dismissFromRecent(id: string) {
       data: { dismissedFromRecent: true }
     })
 
-    // revalidatePath('/') // Removed to prevent immediate refill of the list
+    // revalidatePath('/home') // Removed to prevent immediate refill of the list
     return { success: true }
   } catch (error) {
     console.error('Error dismissing note from recent:', error)
@@ -1895,7 +1895,7 @@ export async function respondToShareRequest(shareId: string, action: 'accept' |
     });
 
     // Revalidate all relevant cache tags
-    revalidatePath('/');
+    revalidatePath('/home');
 
     return { success: true, share: updatedShare };
   } catch (error: any) {
@@ -1957,7 +1957,7 @@ export async function removeSharedNoteFromView(shareId: string) {
       }
     });
 
-    revalidatePath('/');
+    revalidatePath('/home');
     return { success: true };
   } catch (error: any) {
     console.error('Error removing shared note from view:', error);
@@ -2018,7 +2018,7 @@ export async function leaveSharedNote(noteId: string) {
       }
     });
 
-    revalidatePath('/');
+    revalidatePath('/home');
     return { success: true };
   } catch (error: any) {
     console.error('Error leaving shared note:', error);

memento-note/app/actions/organize-notebook.ts

@@ -271,7 +271,7 @@ export async function executeNotebookOrganization(plan: OrganizationPlan): Promi
       }
     }
 
-    revalidatePath('/')
+    revalidatePath('/home')
     return { success: true, created, moved }
   } catch (err) {
     console.error('[organize-notebook] Execute error:', err)

memento-note/app/actions/profile.ts

@@ -96,7 +96,7 @@ export async function updateTheme(theme: string) {
       where: { id: session.user.id },
       data: { theme: normalized },
     })
-    revalidatePath('/')
+    revalidatePath('/home')
     revalidatePath('/settings/profile')
     return { success: true }
   } catch (error) {
@@ -123,7 +123,7 @@ export async function updateLanguage(language: string) {
 
     // Note: The language will be applied on next page load
     // The client component should handle updating localStorage and reloading
-    revalidatePath('/')
+    revalidatePath('/home')
     revalidatePath('/settings/profile')
     return { success: true, language }
   } catch (error) {
@@ -168,7 +168,7 @@ export async function updateFontSize(fontSize: string) {
       })
     }
 
-    revalidatePath('/')
+    revalidatePath('/home')
     revalidatePath('/settings/profile')
     return { success: true, fontSize }
   } catch (error) {
@@ -194,7 +194,7 @@ export async function updateShowRecentNotes(showRecentNotes: boolean) {
       },
     })
 
-    revalidatePath('/')
+    revalidatePath('/home')
     revalidatePath('/settings/profile')
     return { success: true, showRecentNotes }
   } catch (error) {

memento-note/app/actions/title-suggestions.ts

@@ -99,7 +99,7 @@ export async function applyTitleSuggestion(
       console.error('[HISTORY] Failed to create snapshot after title suggestion:', snapshotError)
     }
 
-    revalidatePath('/')
+    revalidatePath('/home')
     revalidatePath(`/note/${noteId}`)
   } catch (error) {
     console.error('Error applying title suggestion:', error)