A community based topic aggregation platform built on atproto

feat(posts): add social.coves.community.post.get batch endpoint master

Batch-fetch post views by AT-URI for feed hydration and permalink/cold-load rendering. Returns posts in request order; missing or soft-deleted posts come back as notFoundPost markers. - posts.Service.GetPosts + Repository.GetViewsByURIs (deduped batch fetch, canonical DID-URI validation, request-order assembly) - GET handler at /xrpc/social.coves.community.post.get with per-URI length caps and the shared batch-size limit - viewer vote-state enrichment, blob-ref and embed transforms on found posts Baseline reviewed via /second-opinion; review fixes follow on this branch. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>