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/app/actions/paragraph-refactor.ts

@@ -0,0 +1,49 @@
+'use server'
+
+import { paragraphRefactorService, RefactorMode, RefactorResult } from '@/lib/ai/services/paragraph-refactor.service'
+
+export interface RefactorResponse {
+  result: RefactorResult
+}
+
+/**
+ * Refactor a paragraph with a specific mode
+ */
+export async function refactorParagraph(
+  content: string,
+  mode: RefactorMode
+): Promise<RefactorResponse> {
+  try {
+    const result = await paragraphRefactorService.refactor(content, mode)
+
+    return { result }
+  } catch (error) {
+    console.error('Error refactoring paragraph:', error)
+    throw error
+  }
+}
+
+/**
+ * Get all 3 refactor options at once
+ */
+export async function refactorParagraphAllModes(
+  content: string
+): Promise<{ results: RefactorResult[] }> {
+  try {
+    const results = await paragraphRefactorService.refactorAllModes(content)
+
+    return { results }
+  } catch (error) {
+    console.error('Error refactoring paragraph in all modes:', error)
+    throw error
+  }
+}
+
+/**
+ * Validate word count before refactoring
+ */
+export async function validateRefactorWordCount(
+  content: string
+): Promise<{ valid: boolean; error?: string }> {
+  return paragraphRefactorService.validateWordCount(content)
+}