[FEAT] L4 AI Cross-Analysis — analisi aggregata multi-org per consulenti
- CrossAnalysisController.php: analyze/history/portfolio (k-anonymity min 2 org)
- AIService::crossOrgAnalysis(): aggregazione 9 dimensioni, zero PII nel prompt
- cross-analysis.html: chat UI purple theme, 3 tab, quick questions, portfolio stats
- index.php: routing /api/cross-analysis/{analyze,history,portfolio}
- common.js: link "AI Cross-Analysis" in sidebar sezione Gestione
- docs/AI_LEVELS_SCHEMA.md: schema architetturale L1-L5 con matrice privacy
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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