i18n: localize hardcoded UI strings across 10 components

Wraps the hardcoded strings flagged in LOTUS_BUGS.md (Localization rows)
in t() via react-i18next, and adds the keys to public/locales/en.json
under the existing Organisms.* namespace. de.json intentionally left to
fall back to en for now (fallbackLng: 'en') rather than fabricate
translations.

Files: CreateRoomTypeSelector, ImageViewer, MsgTypeRenderers (MLocation),
Reply (ThreadIndicator), ImageContent, DeviceVerification (5 subcomponents),
UrlPreviewCard (DiscordCard), InviteUserPrompt, UploadBoard, PasswordStage.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/app/components/message/content/ImageContent.tsx

@@ -1,4 +1,5 @@
 import React, { ReactNode, useCallback, useEffect, useRef, useState } from 'react';
+import { useTranslation } from 'react-i18next';
 import {
   Badge,
   Box,
@@ -81,6 +82,7 @@ export const ImageContent = as<'div', ImageContentProps>(
     const useAuthentication = useMediaAuthentication();
     const blurHash = validBlurHash(info?.[MATRIX_BLUR_HASH_PROPERTY_NAME]);
 
+    const { t } = useTranslation();
     const [load, setLoad] = useState(false);
     const [error, setError] = useState(false);
     const [viewer, setViewer] = useState(false);
@@ -168,7 +170,7 @@ export const ImageContent = as<'div', ImageContentProps>(
               onClick={loadSrc}
               before={<Icon size="Inherit" src={Icons.Photo} filled />}
             >
-              <Text size="B300">View</Text>
+              <Text size="B300">{t('Organisms.ImageContent.view')}</Text>
             </Button>
           </Box>
         )}
@@ -212,7 +214,7 @@ export const ImageContent = as<'div', ImageContentProps>(
                     }
                   }}
                 >
-                  <Text size="B300">Spoiler</Text>
+                  <Text size="B300">{t('Organisms.ImageContent.spoiler')}</Text>
                 </Chip>
               )}
             </TooltipProvider>
@@ -247,7 +249,7 @@ export const ImageContent = as<'div', ImageContentProps>(
                   onClick={handleRetry}
                   before={<Icon size="Inherit" src={Icons.Warning} filled />}
                 >
-                  <Text size="B300">Retry</Text>
+                  <Text size="B300">{t('Organisms.ImageContent.retry')}</Text>
                 </Button>
               )}
             </TooltipProvider>