The plan ended up simpler than the four-layer sequence I originally
sketched: making the hook smart (use `getEffectiveSpaceId()` instead of
the literal sentinel) replaced both Schicht-A Etappe-2 (throw on
missing) and the per-call-site stamp migration. With that, the
transitional legacy-Home check + post-reconcile dedup pass also
became dead code and got removed in the same cleanup commit.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Plan now reflects what's actually merged: D-soft, B+C, and Schicht A
Etappe 1 are in. Etappe 2 (creating-hook flip to throw) is queued
post-soak; D-hard (deterministic-id rename) follows after that.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
The Home-seeder in workbench-scenes.svelte.ts writes new scenes without
spaceId, so the creating-hook stamps them with the _personal:<userId>
sentinel. The per-space dedup check filters by the real space UUID and
never finds them — every login adds another Home row, and every visit
to a non-personal Space (Brand/Family/Team) drops yet another seed
into the personal Space.
This is Schicht D-soft of the broader cleanup plan
(docs/plans/workbench-seeding-cleanup.md): a one-shot dedup pass that
collapses duplicate "Home" rows per spaceId, merging openApps from the
losers into the survivor (most apps wins, ties by most-recent
updatedAt) and soft-deleting the rest so mana-sync propagates the
cleanup to other devices. Touches only rows that look like fresh
default seeds — anything customized (description, wallpaper, agent
binding, scope tags, non-Home name) is left alone.
Wired in two places: a Dexie v48 upgrade so it runs once per device on
schema bump, and a belt-and-suspenders pass in (app)/+layout.svelte
right after reconcileSentinels() to catch the edge case where
sentinel-stamped rows just collapsed into the same UUID group as
already-reconciled rows.
The structural fix that prevents new duplicates from ever forming
(per-space-seeds registry + deterministic seed ids +
creating-hook hardening) ships in follow-up commits per the plan.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
