Unify attachment display and enable file uploads on all platforms (#1501)

Attachment pills were drawn by four separate style sets, so files,
images, GitHub items, and reviews rendered at different heights in the
same tray. Move the frame, the two-line label, and the image thumbnail
into shared components so every attachment lines up at one height,
across both the composer and sent messages.

Sent-message images now open the lightbox, and file uploads work on
iOS and Android via expo-document-picker instead of being gated to
desktop.

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

@@ -110,7 +110,7 @@ export const es: TranslationResources = {
       removeFile: "Remove file attachment",
       openGithub: "Abrir{{kind}}#{{number}}",
       removeGithub: "Quitar{{kind}}#{{number}}",
-      browserElement: "Elemento ·{{tag}}",
+      element: "Elemento",
       openBrowserElement: "Abrir archivo adjunto de elemento del navegador",
       removeBrowserElement: "Eliminar el archivo adjunto del elemento del navegador",
       openReview: "Abrir archivo adjunto de reseña",
@@ -258,9 +258,12 @@ export const es: TranslationResources = {
       imageUnavailable: "Imagen no disponible",
       imagePreviewUnavailable: "Vista previa de la imagen no disponible.",
       imagePreviewLoadFailed: "No se puede cargar la vista previa de la imagen.",
-      reviewOne: "Reseña · 1 comentario",
-      reviewMany: "Revisión · Comentarios{{count}}",
+      review: "Revisión",
+      commentsOne: "1 comentario",
+      commentsMany: "{{count}} comentarios",
       textAttachment: "Adjunto de texto",
+      text: "Texto",
+      file: "Archivo",
     },
     speak: {
       header: "Habló",