hardened bluesky app fork with microcosm

microcosm: community CDN + viewer-state hydration master

- Default reconstructed image URLs to community cdn.blueat.net instead of cdn.bsky.app (configurable via EXPO_PUBLIC_IMG_CDN_URL); verified same scheme - Reconstruct PostView.viewer like/repost state from Constellation did-filtered backlinks (record rkey -> at-uri), threaded through hydratePost via agent.did


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4 changed files