fix: resolve Prisma 'vector' deserialization error and missing PDF canvas dependency

memento-note/lib/ai/services/memory-echo.service.ts

@@ -111,7 +111,7 @@ export class MemoryEchoService {
         userId,
         isArchived: false,
         trashedAt: null,
-        noteEmbedding: { isNot: null } // Only notes with embeddings
+        // noteEmbedding: { isNot: null } // Removed because Unsupported type cannot be used in 'where' easily
       },
       select: {
         id: true,
@@ -127,11 +127,20 @@ export class MemoryEchoService {
       return [] // Need at least 2 notes to find connections
     }
 
+    if (notes.length < 2) return []
+
+    // Fetch embeddings separately using raw SQL to avoid deserialization error
+    const noteIds = notes.map(n => n.id)
+    const embeddings: Array<{ noteId: string, embedding: any }> = await prisma.$queryRawUnsafe(
+      `SELECT "noteId", "embedding"::text FROM "NoteEmbedding" WHERE "noteId" IN (${noteIds.map(id => `'${id}'`).join(',')})`
+    )
+    const embeddingMap = new Map(embeddings.map(e => [e.noteId, e.embedding]))
+
     const notesWithEmbeddings = notes
       .map(note => ({
         ...note,
-        embedding: note.noteEmbedding?.embedding
-          ? embeddingService.fromVectorString(note.noteEmbedding.embedding as unknown as string)
+        embedding: embeddingMap.has(note.id)
+          ? embeddingService.fromVectorString(embeddingMap.get(note.id))
           : null
       }))
       .filter(note => note.embedding && Array.isArray(note.embedding))
@@ -446,7 +455,6 @@ Explain in one brief sentence (max 15 words) why these notes are connected. Focu
         id: true,
         title: true,
         content: true,
-        noteEmbedding: true,
         createdAt: true,
         userId: true
       }
@@ -456,7 +464,14 @@ Explain in one brief sentence (max 15 words) why these notes are connected. Focu
       return [] // Note not found or doesn't belong to user
     }
 
-    if (!targetNote.noteEmbedding) {
+    // Fetch embedding separately
+    const embeddingResult: Array<{ embedding: any }> = await prisma.$queryRawUnsafe(
+      `SELECT "embedding"::text FROM "NoteEmbedding" WHERE "noteId" = $1`,
+      noteId
+    )
+    const targetEmbeddingStr = embeddingResult[0]?.embedding
+
+    if (!targetEmbeddingStr) {
       return [] // Note has no embedding
     }
 
@@ -490,13 +505,11 @@ Explain in one brief sentence (max 15 words) why these notes are connected. Focu
         id: { not: noteId },
         isArchived: false,
         trashedAt: null,
-        noteEmbedding: { isNot: null }
       },
       select: {
         id: true,
         title: true,
         content: true,
-        noteEmbedding: true,
         createdAt: true
       },
       orderBy: { createdAt: 'desc' }
@@ -506,11 +519,18 @@ Explain in one brief sentence (max 15 words) why these notes are connected. Focu
       return []
     }
 
-    const targetEmbedding = targetNote.noteEmbedding?.embedding
-      ? embeddingService.fromVectorString(targetNote.noteEmbedding.embedding as unknown as string)
+    const targetEmbedding = targetEmbeddingStr
+      ? embeddingService.fromVectorString(targetEmbeddingStr)
       : null
     if (!targetEmbedding) return []
 
+    // Fetch all other embeddings
+    const otherNoteIds = otherNotes.map(n => n.id)
+    const otherEmbeddings: Array<{ noteId: string, embedding: any }> = await prisma.$queryRawUnsafe(
+      `SELECT "noteId", "embedding"::text FROM "NoteEmbedding" WHERE "noteId" IN (${otherNoteIds.map(id => `'${id}'`).join(',')})`
+    )
+    const otherEmbeddingMap = new Map(otherEmbeddings.map(e => [e.noteId, e.embedding]))
+
     // Check if user has demo mode enabled
     const settings = await prisma.userAISettings.findUnique({
       where: { userId }
@@ -540,11 +560,10 @@ Explain in one brief sentence (max 15 words) why these notes are connected. Focu
 
     // Compare target note with all other notes
     for (const otherNote of otherNotes) {
-      if (!otherNote.noteEmbedding) continue
+      const otherEmbeddingStr = otherEmbeddingMap.get(otherNote.id)
+      if (!otherEmbeddingStr) continue
 
-      const otherEmbedding = otherNote.noteEmbedding?.embedding
-        ? embeddingService.fromVectorString(otherNote.noteEmbedding.embedding as unknown as string)
-        : null
+      const otherEmbedding = embeddingService.fromVectorString(otherEmbeddingStr)
       if (!otherEmbedding) continue
 
       // Check if this connection was dismissed