Implement synthetic point-in-time NAAIM–AAII alignment

Objective

Implement synthetic point-in-time NAAIM–AAII alignment.

Notes: Added synthetic-only validated-source alignment on the frozen prior-close/next-close contract; tests cover no backfill/look-ahead, forward fill, extra-day lag for both sources, calendar validation, and bounded calendars. UI exception documented because AAII acquisition remains gated.

Approach

[reconstructed — uncertain] No dedicated findings Markdown located for t336. Summary reconstructed from research/findings/task-history.json entry and git history. Uncertain fields: detailed approach, exact file list, and metrics beyond the task note.

Files / code / data changed

• No commit SHA confidently associated with t336 in sampled log [reconstructed — uncertain].
• Task-history entry: research/findings/task-history.json#t336

Results

Task note: Added synthetic-only validated-source alignment on the frozen prior-close/next-close contract; tests cover no backfill/look-ahead, forward fill, extra-day lag for both sources, calendar validation, and bounded calendars. UI exception documented because AAII acquisition remains gated. [reconstructed — uncertain] No quantitative tables recovered for this entry; see git diff and task-history for grounds.

Conclusions

[reconstructed — uncertain] Outcome inferred from status done and task note.

Problems / follow-ups

• See source report or PR discussion for follow-ups. No unsupported follow-ups fabricated.

Links

• Task-history: research/findings/task-history.json id t336