fix: fail ingestion when vector persistence fails (#78) - #81

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-node@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

src/DiagnosticsViewer.tsx:36:5: Calling setState synchronously within an effect can trigger cascading renders

src/theme.ts:65:12: Catch parameter '_e' is caught but never used.

src/theme.ts:54:12: Catch parameter '_e' is caught but never used.

src/ToastContext.tsx:25:17: Fast refresh only works when a file only exports components. Use a new file to share constants or functions between components.

src/Settings.tsx:223:7: Calling setState synchronously within an effect can trigger cascading renders

src/Settings.tsx:214:5: Calling setState synchronously within an effect can trigger cascading renders

scripts/inspect_layout.ts:407:28: Variable 'viewportHeight' is declared but never used. Unused variables should start with a '_'.

scripts/inspect_layout.ts:214:29: Parameter 'd' is declared but never used. Unused parameters should start with a '_'.

src/components/settings/ThemeSettings.tsx:10:5: Calling setState synchronously within an effect can trigger cascading renders

src/hooks/useGitSyncStream.ts:47:5: Calling setState synchronously within an effect can trigger cascading renders