- Fix: _compute_one_chart.py JD calculation used PyJHora's
gregorian_to_jd() which ALWAYS returns noon JD regardless of time.
Changed to swe.julday() with correct UTC hour.
- Impact: All 60 test charts with non-noon birth times had wrong
ascendants and house assignments (e.g. Einstein went from
Scorpio Asc -> Gemini Asc, matching Swiss Ephemeris)
- Cross-validated: Swiss Ephemeris (industry gold standard) and
xalen-ephemeris (Rust, 5M chart oracle test)
- New baseline: F1=93.50% (Precision=93.82%, Recall=93.18%)
- Regenerated: standard_test_charts.json, planet_positions_60.json,
validation_logic_report.json
- Quality gate: compile/json/audit/BPHS/pytest/golden all passed
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