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A library shared by two groups arrived in the cross-group Search view as
two entries per file: every film was two poster cards, every episode was
listed twice in the season list under the synopsis. Inside one group
this cannot happen — GroupIndex is keyed by blake3 — so the duplication
was the Search page's own, from concatenating N independently keyed
indexes.
source-merge.js folds entries on the content hash and resolves one
source per *unit* (a film, a whole show), so a season does not scatter
across two nodes. A group hosted by the reader's own node wins; failing
that the pick is a hash of the unit key and the reader's id, stable
across renders and reloads — a source that changed mid-stream would tear
down the connection under a film that is playing — and spread across
readers and units.
The units come from video-app.js's own groupVideoEntries rather than a
second copy of its keys here. Only the Videos view is wired up so far;
Music, Photos, failover and the "N sources" badge are phases 5-8 of
docs/refactoring-search.md.
Every test was checked against the fix removed. That is how the first
version of "a unit's files share its source" turned out to prove
nothing: with every episode in every group, per-file and per-unit
picking give the same answer, so it passed against a per-file
implementation. It now uses a unit whose files have unequal sources.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AbwJDbNTkiRUh7HTWEoyss
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A file shared by two groups is two entries in the cross-group Search
view: one film shows as two poster cards, one episode twice in a show's
list, one track twice in an album. Within a group this cannot happen —
GroupIndex is keyed by blake3 — so the duplication is created by the
Search page concatenating N independently keyed indexes.
The plan: merge on the content hash, choose one source per logical unit
(film, show, album), prefer a group hosted by the local node, otherwise
pick deterministically per user, and fail over when the chosen source is
unreachable. The Files explorer stays navigable per group and is not
merged.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AbwJDbNTkiRUh7HTWEoyss
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