feat: add media collection overview gallery (6/7) - #3182
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…ecent, and gallery cards
…ttachments (swipe-to-reply, popover, reply preview)
…ollapsed galleries via coversPartId
…l for mixed attachments
…e title and card widgets.
…attachments from collection cards
…lready passing collectionController.media
…on the stack collection
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Adds a full-page collection gallery for multi-attachment message layouts by reusing the
conversation-detailsmedia grid.Built on top of #3181 (Material/Samsung grid) and continues toward #3147 / #3122.
CollectionMediaController+CollectionMediaGridPage- overview gallery viacontroller.media+N(tap)MediaGalleryCardvideo preview when unmountedfrom_stack.mp4
from_fullscreen.mp4
from_grid.mp4
Changes (commit-by-commit)
CollectionMediaGridPage+ controller — full-page gallery;openGalleryentry+Nentry — stack title + grid see-more open the overviewcollectionControllerfrom cards so paging stays on collection mediagalleryAttachments— cards usecollectionController.mediawhen presentMediaGalleryCardunmount safetyPer-file changes
collections/collection_media_controller.dartopenGallery→CollectionMediaGridPage; media/title/chat holders for fullscreen pass-through.collections/collection_media_grid_page.dartFull-page selectable grid via
MediaGridSection(no avatars; tapback overlays).collections/collection_title.dart/collection_group_grid.dart/collection_group_stack.dartTitle /
+Nopen overview; stack tapback spacing polish.collections/collection_attachment_card.dart/collection_group_collage.dartPass
collectionControllerinto fullscreen; collage overview only via fullscreen button.fullscreen_media/*Collection-scoped paging + open-gallery affordance from image/video viewers.
media_gallery_card.dart/media_grid_section.dartAvatar hide, tapback overlays, video preview dispose guard.
collections/CLAUDE.mdOverview ownership + entry-point notes.
Partially addresses #3122 and #2605 and lays groundwork for #2812