feat: Memento avec dates, Markdown, reminders et auth

Tests Playwright validés ✅:
- Création de notes: OK
- Modification titre: OK
- Modification contenu: OK
- Markdown éditable avec preview: OK

Fonctionnalités:
- date-fns: dates relatives sur cards
- react-markdown + remark-gfm
- Markdown avec toggle edit/preview
- Recherche améliorée (titre/contenu/labels/checkItems)
- Reminder recurrence/location (schema)
- NextAuth.js + User/Account/Session
- userId dans Note (optionnel)
- 4 migrations créées

Ready for production + auth integration

mcp-server/index-sse.js

@@ -37,6 +37,27 @@ function parseNote(dbNote) {
   };
 }
 
+// Helper to parse note with lightweight format (no images, truncated content)
+function parseNoteLightweight(dbNote) {
+  return {
+    id: dbNote.id,
+    title: dbNote.title,
+    content: dbNote.content.length > 200 ? dbNote.content.substring(0, 200) + '...' : dbNote.content,
+    color: dbNote.color,
+    type: dbNote.type,
+    isPinned: dbNote.isPinned,
+    isArchived: dbNote.isArchived,
+    hasImages: !!dbNote.images,
+    imageCount: dbNote.images ? JSON.parse(dbNote.images).length : 0,
+    labels: dbNote.labels ? JSON.parse(dbNote.labels) : null,
+    hasCheckItems: !!dbNote.checkItems,
+    checkItemsCount: dbNote.checkItems ? JSON.parse(dbNote.checkItems).length : 0,
+    reminder: dbNote.reminder,
+    createdAt: dbNote.createdAt,
+    updatedAt: dbNote.updatedAt,
+  };
+}
+
 // Create MCP server
 const server = new Server(
   {
@@ -118,7 +139,7 @@ server.setRequestHandler(ListToolsRequestSchema, async () => {
       },
       {
         name: 'get_notes',
-        description: 'Get all notes from Memento',
+        description: 'Get all notes from Memento (lightweight format: titles, truncated content, no images to reduce payload size)',
         inputSchema: {
           type: 'object',
           properties: {
@@ -131,6 +152,11 @@ server.setRequestHandler(ListToolsRequestSchema, async () => {
               type: 'string',
               description: 'Search query to filter notes',
             },
+            fullDetails: {
+              type: 'boolean',
+              description: 'Return full note details including images (warning: large payload)',
+              default: false,
+            },
           },
         },
       },
@@ -323,11 +349,16 @@ server.setRequestHandler(CallToolRequestSchema, async (request) => {
           ],
         });
 
+        // Use lightweight format by default, full details only if requested
+        const parsedNotes = args.fullDetails 
+          ? notes.map(parseNote) 
+          : notes.map(parseNoteLightweight);
+
         return {
           content: [
             {
               type: 'text',
-              text: JSON.stringify(notes.map(parseNote), null, 2),
+              text: JSON.stringify(parsedNotes, null, 2),
             },
           ],
         };