feat: add inline chart support for notes

- Add NoteChart component using Recharts (bar, line, area, pie, radar, funnel, gauge)
- Add generate_chart and insert_chart_in_note AI tools
- Add chart code block support in MarkdownContent (```chart ... ```)
- Support JSON and simple data formats (label: value)
- Add i18n translations for chart features

Chart syntax examples:
- JSON: ```chart {"type":"bar","data":[{"label":"A","value":10}]} ```
- Simple: ```chart\nbar\nSales Data\nJan: 120\nFeb: 150\n```

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

memento-note/lib/ai/tools/index.ts

@@ -15,6 +15,7 @@ import './pptx.tool'
 import './slides.tool'
 import './document-search.tool'
 import './task-extract.tool'
+import './chart.tool'
 
 // Re-export registry
 export { toolRegistry, type ToolContext, type RegisteredTool } from './registry'