A one-shot sweep, not a standing process. Two dead components had been found
incidentally in one week, each discovered only because someone was about to
change behaviour it appeared to depend on -- VersionHistory during BUG-2608
(its apparent liveness would have blocked a default history limit) and
EditorToolbar before it. Retired UI left in-tree costs every future reader who
greps for a component, finds a plausible implementation, and reasons about
behaviour nobody mounts; it also silently constrains fixes.
Instrument, two passes over all 110 components under web/src/lib/components:
1. Plain substring grep of each basename across web/src + web/e2e. Four
zero-hit. This pass counts COMMENTS as liveness, so it under-reports
deadness -- conservative in the safe direction.
2. Import/mount-only regex (a from-import of the .svelte path, a dynamic
import of it, or a <Name element). Six zero-hit; the two extras were
exactly the comment-shadowed cases pass 1 could not see.
Controls: a known-live component (BacklinksPanel) resolves to its single
consumer under both passes; each of the six candidates then took a repo-wide
plain grep with no include filters, and every surviving hit was read. Pass 2's
one known blind spot -- a component referenced only by vi.mock(path) -- was
checked by enumerating every vi.mock target ending in .svelte; all are
.svelte.ts store/service modules except CommentEditor, which is independently
imported. None of the six is in that set.
Deleted (six dead, two cascade orphans):
- activity/ActivityFeed.svelte -- a live /activity route page and
TimelineActivityCard both exist; neither touches it.
- charts/LineChart.svelte and charts/layers/Lines.svelte -- from the TASK-1632
LayerCake library; only BarChart reached the insights pages. Lines had
exactly one consumer (LineChart), so it falls with it. AxisX/AxisY stay:
shared with BarChart.
- charts/Sparkline.svelte (TASK-1638) -- its only repo-wide reference was a
prose comment recording that PLAN-1542 chose not to show it. Zero mounts.
- editor/MermaidRenderer.svelte -- superseded by the MermaidCodeBlock NodeView
in Editor.svelte, which owns the render queue, toggle and error state.
- versions/VersionHistory.svelte -- the BUG-2608 find. The live path is
ItemTimeline to TimelineVersionCard to DiffView; DiffView stays.
- attachments/fixtures/LightboxStub.svelte and fixtures/lightboxStub.ts -- a
pair that referenced only each other. Their last consumer was removed by the
TASK-2489 atomic cutover, so they were orphaned rather than born dead.
Nothing was reclassified live-but-obscure, so no import-site comments were
owed. Two docs updated so no artifact points at a deleted file: the web README
component tree drops the activity/ line, and the UserOverviewTab comment now
says the Sparkline component was deleted here and is recoverable from history,
rather than leaving a dangling decision record.
Git history is the archive; anything worth resurrecting is one revert away.
Claude-Session: https://claude.ai/code/session_017jD6t1zjxGSq47SQpZfp1V
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