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/regenerate-embeddings.ts

@@ -0,0 +1,67 @@
+import { PrismaClient } from '../prisma/client-generated'
+import { getAIProvider } from '../lib/ai/factory'
+import { getSystemConfig } from '../lib/config'
+
+const prisma = new PrismaClient()
+
+async function regenerateAllEmbeddings() {
+  console.log('🔄 Starting embedding regeneration...\n')
+
+  // Get all notes
+  const notes = await prisma.note.findMany({
+    select: {
+      id: true,
+      title: true,
+      content: true
+    }
+  })
+
+  console.log(`📝 Found ${notes.length} notes to process\n`)
+
+  // Get AI provider
+  const config = await getSystemConfig()
+  const provider = getAIProvider(config)
+
+  console.log(`🤖 Using AI provider...`)
+
+  let successCount = 0
+  let errorCount = 0
+
+  for (const note of notes) {
+    try {
+      const title = note.title || '(no title)'
+      process.stdout.write(`\r⏳ Processing ${successCount + 1}/${notes.length}: ${title.substring(0, 40)}...`)
+
+      // Generate new embedding
+      const embedding = await provider.getEmbeddings(note.content)
+
+      if (embedding) {
+        // Update note with new embedding
+        await prisma.note.update({
+          where: { id: note.id },
+          data: {
+            embedding: JSON.stringify(embedding)
+          }
+        })
+
+        successCount++
+      } else {
+        errorCount++
+        console.log(`\n❌ Failed: ${title} (no embedding generated)`)
+      }
+    } catch (error) {
+      errorCount++
+      const errorMessage = error instanceof Error ? error.message : 'Unknown error'
+      console.log(`\n❌ Error: ${note.title || '(no title)'} - ${errorMessage}`)
+    }
+  }
+
+  console.log(`\n\n📊 Summary:`)
+  console.log(`  ✅ Success: ${successCount}/${notes.length}`)
+  console.log(`  ❌ Errors: ${errorCount}/${notes.length}`)
+  console.log('\n✨ Embeddings regenerated successfully!')
+
+  await prisma.$disconnect()
+}
+
+regenerateAllEmbeddings().catch(console.error)