fix: TOUTES les clés i18n manquantes ajoutées — 0 erreur

- general.continue/send
- structuredViews.tagApplied/filterDone/filterTodo/propertyStatus
- wizard.taskA/taskB
- richTextEditor.preview*Tip (7 clés SlashPreview)
- wizard.* au niveau racine (48 clés FR + 48 EN)
- Total: 0 clé manquante pour FR et EN
- 0 erreur TypeScript

memento-note/lib/sanitize-content.ts

@@ -0,0 +1,29 @@
+import DOMPurify from 'isomorphic-dompurify'
+
+const SVG_SANITIZE_CONFIG = {
+  USE_PROFILES: { svg: true, svgFilters: true },
+  ADD_TAGS: [
+    'use', 'defs', 'linearGradient', 'radialGradient', 'stop',
+    'filter', 'feDropShadow', 'feGaussianBlur', 'feBlend', 'feComposite',
+    'feMerge', 'feMergeNode', 'feColorMatrix', 'feOffset', 'feTurbulence',
+    'feDisplacementMap', 'clipPath', 'mask', 'pattern', 'symbol', 'marker',
+  ],
+  ADD_ATTR: [
+    'viewBox', 'xmlns', 'preserveAspectRatio',
+    'gradientUnits', 'gradientTransform', 'spreadMethod',
+    'offset', 'stop-color', 'stop-opacity',
+    'x', 'y', 'width', 'height', 'fill', 'stroke', 'stroke-width',
+    'opacity', 'transform', 'd', 'cx', 'cy', 'r', 'rx', 'ry',
+    'x1', 'y1', 'x2', 'y2', 'points', 'class', 'id', 'href', 'xlink:href',
+  ],
+} as const
+
+export function sanitizeIllustrationSvg(svg: string): string {
+  if (!svg) return ''
+  return DOMPurify.sanitize(svg, SVG_SANITIZE_CONFIG)
+}
+
+export function sanitizeRichHtml(html: string): string {
+  if (!html) return ''
+  return DOMPurify.sanitize(html, { USE_PROFILES: { html: true } })
+}