The Stored Knowledge Base Files render crashed on first open in v1.32.0-rc.5
with `ReferenceError: sourceToDisplayName is not defined`. The table column's
render() called `sourceToDisplayName(record.source)` but the function was
extracted to `lib/kb_file_grouping.ts` in PR #892 and never imported in
KnowledgeBaseModal.tsx. The unhandled error unmounts the entire React tree,
so users see a blank screen ~20s after opening the panel.
Root cause: PR #895 (conditional warnings) rewrote the render() and used
`sourceToDisplayName(record.source)` instead of `record.displayName`, which
KbFileGroup already carries from groupAndSortKbFiles(). PR #895's review
follow-up (cbae48a) compounded this by narrowing the StyledTable generic
from `KbFileGroup` to `{source: string}`, hiding the type drift from tsc.
This restores the post-#892 pattern:
- StyledTable generic back to `KbFileGroup`
- Render uses `record.displayName` (works for both per-file rows and the
collapsed admin-docs row; calling sourceToDisplayName on the synthetic
`__admin_docs_group__` would have rendered that literal as the row name).
Also folds in tooltip copy on the three bulk-action buttons (Reset & Rebuild,
Re-embed All, Sync Storage) so the difference in destructiveness is visible
on hover. Uses native `title` attribute via StyledButton's prop pass-through;
no new component dependency.
Inertia tsconfig catches this regression cleanly (TS2304 + TS2339); the
pre-push hook only runs the backend tsconfig which excludes inertia/**, so
the bug shipped. Tracking the typecheck-coverage gap as a follow-up.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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