quantmodel — Implement Meta strategy tax analysis

Objective

Implement Meta strategy tax analysis.

Notes: Implemented reusable FIFO capital-gain ledger, monthly constituent-to-asset target expansion, additive Original Meta tax_analysis export, disclosures, and deterministic fixtures; 42 focused/regression tests pass.

Approach

Reuses existing report research/findings/meta-tax-analysis-t250.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 t250 in sampled log [reconstructed — uncertain].
Source report: research/findings/meta-tax-analysis-t250.md
Task-history entry: research/findings/task-history.json#t250

Results

Conclusions and metrics are in research/findings/meta-tax-analysis-t250.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.