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* feat(chat): full-screen image viewer (issue #723) Tap any chat image (markdown , inline attachment thumbnail, or bubble image) to open a full-screen viewer: - pinch-zoom + pan via native detectTransformGestures - downswipe-to-dismiss at min zoom - Save -> device Downloads (MediaStore), Share -> Android share sheet (both fully device-local; never sent back to the Hermes server) Plumbing: onImageClick(ImageViewerModel) flows MarkdownText -> ChatBubble/InlineAttachment -> ChatMessageList -> ChatScreen (state + ImageViewerDialog). ImageBytesResolver reuses the existing authed OkHttpProvider path for gateway http(s) sources; data:/content:// handled locally. No new dependencies. Closes #723 * fix(chat): resolve strings at composable scope to satisfy LocalContextGetResourceValueCall lint Lint forbids reading resource *values* from LocalContext.current inside coroutine lambdas. Hoist all viewer strings via stringResource() at composable scope and reuse them in onSave/onShare. --------- Co-authored-by: M57 <hy4ri@users.noreply.github.com>