feat: rename keep-notes to memento-note, migrate to PostgreSQL, fix MCP bugs

- Rename directory keep-notes -> memento-note with all code references
- Prisma: SQLite -> PostgreSQL (both app and MCP server schemas)
- Sync MCP schema with main app (add missing fields, relations, indexes)
- Delete 17 SQLite migrations (clean slate for PostgreSQL)
- Remove SQLite dependencies (@libsql/client, better-sqlite3, etc.)
- Fix MCP server: hardcoded Windows DB paths -> DATABASE_URL env var
- Fix MCP server: .dockerignore excluded index-sse.js (SSE mode broken)
- MCP Dockerfile: node:20 -> node:22
- Docker Compose: add postgres service, remove SQLite volume
- Generate favicon.ico, icon-192.png, icon-512.png, apple-icon.png
- Update layout.tsx icons and manifest.json for PNG icons
- Update all .env files for PostgreSQL
- Rewrite README.md with updated sections
- Remove mcp-server/node_modules and prisma/client-generated from git tracking

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

memento-note/scripts/test-backend-logic.ts

@@ -0,0 +1,63 @@
+
+import { prisma } from '../lib/prisma'
+
+// Copy of parseNote from app/actions/notes.ts (since it's not exported)
+function parseNote(dbNote: any) {
+    const embedding = dbNote.embedding ? JSON.parse(dbNote.embedding) : null
+
+    if (embedding && Array.isArray(embedding)) {
+        // Simplified validation check for test
+        if (embedding.length !== 1536 && embedding.length !== 768 && embedding.length !== 384) {
+            return {
+                ...dbNote,
+                checkItems: dbNote.checkItems ? JSON.parse(dbNote.checkItems) : null,
+                labels: dbNote.labels ? JSON.parse(dbNote.labels) : null,
+                images: dbNote.images ? JSON.parse(dbNote.images) : null,
+                links: dbNote.links ? JSON.parse(dbNote.links) : null,
+                embedding: null,
+                sharedWith: dbNote.sharedWith ? JSON.parse(dbNote.sharedWith) : [],
+                size: dbNote.size || 'small',
+            }
+        }
+    }
+
+    return {
+        ...dbNote,
+        checkItems: dbNote.checkItems ? JSON.parse(dbNote.checkItems) : null,
+        labels: dbNote.labels ? JSON.parse(dbNote.labels) : null,
+        images: dbNote.images ? JSON.parse(dbNote.images) : null,
+        links: dbNote.links ? JSON.parse(dbNote.links) : null,
+        embedding,
+        sharedWith: dbNote.sharedWith ? JSON.parse(dbNote.sharedWith) : [],
+        size: dbNote.size || 'small',
+    }
+}
+
+async function main() {
+    console.log('🧪 Testing parseNote logic...')
+
+    // 1. Fetch a real note from DB that is KNOWN to be large
+    const rawNote = await prisma.note.findFirst({
+        where: { size: 'large' }
+    })
+
+    if (!rawNote) {
+        console.error('❌ No large note found in DB. Create one first.')
+        return
+    }
+
+    console.log('📊 Raw Note from DB:', { id: rawNote.id, size: rawNote.size })
+
+    // 2. Pass it through parseNote
+    const parsed = parseNote(rawNote)
+    console.log('🔄 Parsed Note:', { id: parsed.id, size: parsed.size })
+
+    if (parsed.size === 'large') {
+        console.log('✅ parseNote preserves size correctly.')
+    } else {
+        console.error('❌ parseNote returned wrong size:', parsed.size)
+    }
+
+}
+
+main().catch(console.error).finally(() => prisma.$disconnect())