quantmodel — Add sortable allocation freshness to the strategy catalog

Objective

Add sortable allocation freshness to the strategy catalog.

Notes: Added sortable ours/AS terminal allocation months to all 102 catalog rows, explicit missing values, scaffold tests, regenerated index/catalog, and browser screenshot.

Approach

Reuses existing report research/findings/catalog-allocation-freshness-t219.md — tables/metrics preserved verbatim via source_report pointer. Body below summarizes grounded evidence from that report and adjacent artifacts.

Files / code / data changed

No commit SHA confidently associated with t219 in sampled log [reconstructed — uncertain].
Source report: research/findings/catalog-allocation-freshness-t219.md
Task-history entry: research/findings/task-history.json#t219

Results

Conclusions and metrics are in research/findings/catalog-allocation-freshness-t219.md; see detail page for preserved tables/metrics.

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.