Implement Original Meta calculations in the browser with Python parity

Objective

Implement Original Meta calculations in the browser with Python parity.

Notes: Ported annual Original Meta scoring, covariance/ERC/min-correlation weighting, dated asset aggregation, lagged returns, progress/cancellation, and revision metadata to the production worker. Python/Node parity plus engine tests pass (36 tests). UI exception documented; t343 owns complete report/page integration after t345 gates.

Approach

[reconstructed — uncertain] No dedicated findings Markdown located for t342. 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 t342 in sampled log [reconstructed — uncertain].
• Task-history entry: research/findings/task-history.json#t342

Results

Task note: Ported annual Original Meta scoring, covariance/ERC/min-correlation weighting, dated asset aggregation, lagged returns, progress/cancellation, and revision metadata to the production worker. Python/Node parity plus engine tests pass (36 tests). UI exception documented; t343 owns complete report/page integration after t345 gates. [reconstructed — uncertain] No quantitative tables recovered for this entry; see git diff and task-history for grounds.

Conclusions

Ported annual Original Meta scoring, covariance/ERC/min-correlation weighting, dated asset aggregation, lagged returns, progress/cancellation, and revision metadata to the production worker. Python/Node parity plus engine tests pass (36 tests). UI exception documented; t343 owns complete report/page integration after t345 gates.

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 t342