RxDB collections (browser)

ifixedx_local

Collection	Purpose
posts	Full tweet rows + scores from last compare/for-you ingest
accounts	Avatar/display rollup per handle — Account rollup
grok_ingests	Raw Grok JSON backups (home xAI path) — Grok ingests
seen_items	Posts / Spaces user opened (dedupe UI)

Rehydrate: loadPersistedMixerCorpus() restores platform / refined from posts on Home open.

thefeedtrix_local (The Pipetrix)

Collection	Purpose
tf_topic_prefs	Enabled topic slugs
tf_posts	Per-topic Grok batch rows
tf_canonical_posts	Deduped canonical tweets for mixer

Canonical fields: tweetJson, sourceType, ingestedAt, topicIdsJson, mixerMetaJson, seen.

No mixerCache

Final feed order is computed in memory:

• mergeFeedWithUnseenCanonicalFirst (src/mixer/merge.ts)

• buildMixerFeedPostsBase (src/mixer/buildFeedPosts.ts)

A persisted mixer_snapshot collection is optional future work only if frozen order replay is required.