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/components/markdown-content.tsx

@@ -7,6 +7,7 @@ import remarkMath from 'remark-math'
 import rehypeKatex from 'rehype-katex'
 import rehypeRaw from 'rehype-raw'
 import 'katex/dist/katex.min.css'
+import { NoteChartFromCode } from './note-chart'
 
 interface MarkdownContentProps {
   content: string
@@ -23,6 +24,30 @@ export const MarkdownContent = memo(function MarkdownContent({ content, classNam
           a: ({ node, ...props }) => (
             <a {...props} className="text-primary hover:underline" target="_blank" rel="noopener noreferrer" />
           ),
+          code({ node, inline, className, children, ...props }: any) {
+            const match = /language-(\w+)/.exec(className || '')
+            const language = match ? match[1] : ''
+
+            // Chart code blocks
+            if (language === 'chart') {
+              return <NoteChartFromCode code={String(children).replace(/\n$/, '')} />
+            }
+
+            // Other code blocks
+            if (!inline && match) {
+              return (
+                <code className={className} {...props}>
+                  {children}
+                </code>
+              )
+            }
+
+            return (
+              <code className="bg-muted px-1.5 py-0.5 rounded text-sm" {...props}>
+                {children}
+              </code>
+            )
+          },
         }}
       >
         {content}