fix(app): paste clipboard images on mobile (#2793)

Native composers had no path from the device clipboard into image attachments. Route clipboard data URLs through the existing attachment persistence flow and expose the action only in the native attachment sheet.

packages/app/src/i18n/resources/fr.ts

@@ -114,6 +114,7 @@ export const fr: TranslationResources = {
     },
     attachments: {
       addImage: "Ajouter une image",
+      pasteImage: "Coller une image",
       addFile: "Upload file",
       addIssueOrPr: "Ajouter un problème ouPR",
       addIssueOrPr_mr: "Ajouter un problème ou MR",
@@ -139,6 +140,8 @@ export const fr: TranslationResources = {
       initialPromptRequired: "Une invite initiale est requise",
       alreadyLoading: "Déjà en cours de chargement",
       uploadFailed: "Failed to upload file",
+      noClipboardImage: "Aucune image dans le presse-papiers",
+      pasteImageFailed: "Impossible de coller l’image",
       fileTooLarge: "{{fileName}} is too large (max {{size}})",
     },
     clientCommands: {