- add normalizeAiDateString() to coerce bare ISO datetimes, date-only
strings, and fractional-second variants into offset-aware format
- apply via z.preprocess in AiEventResponseItemSchema so Zod validation
no longer rejects AI responses missing a timezone offset
- fix system prompt to use toISOString() (unambiguous UTC) and clarify
expected datetime format for the AI model
- install bun-types and add to tsconfig so bun:test resolves cleanly
- add 8 behaviour-driven tests covering all normalizer edge cases
Replace inline JSON extraction with the shared json-utils module,
extract chat response content parsing into a dedicated helper, make
the AI model configurable via AI_MODEL env var, and improve error
messages for production safety.
Sort imports alphabetically, convert value imports to type-only where
appropriate, normalize indentation to tabs, and sort exports
alphabetically across UI components, pages, and lib modules.
Add prompt validation to ai-event (non-empty string, max 2000 chars)
and events array length validation to ai-summary (max 100 items)
to prevent abuse and injection attacks.
