- Reset linkingDiscord state and show error message when linkSocial throws,
so users can retry if the OAuth flow fails
- Move VALID_SECTION_IDS to module level and derive it from SECTIONS to
avoid per-render allocation and prevent the two from drifting out of sync
- Remove premature SectionId cast before the allowlist validation in
the ?section= URL param handling
- Add tests for loading state and error recovery in AccountSection
Fixes#455https://claude.ai/code/session_01UerTpTuBWjreTNEns8srkp