Phase 9 Session 1 - EDGAR XBRL fundamental data layer + margin compression alpha factor#7

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feature/phase9-session1

May 17, 2026

Commits on May 17, 2026

feat(phase9): migration 0011 — fundamentals table XBRL columns + unique constraint
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feat(phase9): EDGAR XBRL parser + EDGARClient.get_company_facts
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feat(phase9): fundamental factor library — margin_compression, roa, rd_intensity, asset_growth (150 tests passing)
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feat(phase9): register fundamental_margin_compression — first HLZ Bonferroni pass (t=+4.834 @ 126d)
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feat(phase9): paper trader Phase 9 — CAGR +8.72%, Sharpe 0.488, Max DD -32.68%
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docs(phase9): session 1 complete — XBRL data layer + margin compression factor
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