quantmodel — Add the personalized-strategy persistence contract and RLS migration

Objective

Add the personalized-strategy persistence contract and RLS migration.

Notes: Added provider-neutral schema-1 personalized Custom Meta contract, Supabase table with immutable canonical configuration/identity, unique per-user identity, forced owner-only RLS, anonymous revoke, and three offline tests; no credentials. UI exception: storage boundary only; t289 owns user-facing sync.

Approach

Reuses existing report research/findings/personal-strategy-persistence-t288.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 t288 in sampled log [reconstructed — uncertain].
Source report: research/findings/personal-strategy-persistence-t288.md
Task-history entry: research/findings/task-history.json#t288

Results

Conclusions and metrics are in research/findings/personal-strategy-persistence-t288.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.