feat(ui): complete Smart City Decision Intelligence HUD overhaul on 12-col grid with Chart.js curve and provenance audit

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Delete docs/AUDIT_REPORT.md

feat(ui/docs): redesign UI/UX for scientific honesty, 5-tier data provenance, and GovTech credibility

refactor: execute full JSC data integrity, provenance architecture, and scientific defensibility rebuild

audit: document P0/P1/P2 findings in AUDIT_REPORT.md

fix: resolve ModuleNotFoundError on startup, make matplotlib optional, and clean up imports

refactor(arch): structure repository into scalable models/, scripts/, docs/, and data/ directories