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/hooks/use-title-suggestions.ts

@@ -0,0 +1,74 @@
+import { useState, useEffect } from 'react'
+import { useDebounce } from './use-debounce'
+
+export interface TitleSuggestion {
+  title: string
+  confidence: number
+  reasoning?: string
+}
+
+interface UseTitleSuggestionsProps {
+  content: string
+  enabled?: boolean
+}
+
+export function useTitleSuggestions({ content, enabled = true }: UseTitleSuggestionsProps) {
+  const [suggestions, setSuggestions] = useState<TitleSuggestion[]>([])
+  const [isAnalyzing, setIsAnalyzing] = useState(false)
+  const [error, setError] = useState<string | null>(null)
+
+  // Debounce le contenu de 2s pour éviter trop d'appels
+  const debouncedContent = useDebounce(content, 2000)
+
+  useEffect(() => {
+    if (!enabled || !debouncedContent) {
+      setSuggestions([])
+      return
+    }
+
+    const wordCount = debouncedContent.split(/\s+/).length
+
+    // Il faut au moins 10 mots
+    if (wordCount < 10) {
+      setSuggestions([])
+      return
+    }
+
+
+    const generateTitles = async () => {
+      setIsAnalyzing(true)
+      setError(null)
+
+      try {
+        const response = await fetch('/api/ai/title-suggestions', {
+          method: 'POST',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify({ content: debouncedContent }),
+        })
+
+
+        if (!response.ok) {
+          const errorData = await response.json()
+          throw new Error(errorData.error || 'Erreur lors de la génération des titres')
+        }
+
+        const data = await response.json()
+        setSuggestions(data.suggestions || [])
+      } catch (err) {
+        console.error('❌ Title suggestions error:', err)
+        setError('Impossible de générer des suggestions de titres')
+      } finally {
+        setIsAnalyzing(false)
+      }
+    }
+
+    generateTitles()
+  }, [debouncedContent, enabled])
+
+  return {
+    suggestions,
+    isAnalyzing,
+    error,
+    clearSuggestions: () => setSuggestions([])
+  }
+}