Update fund comparison to match GitHub Pages version

[stenehrlich-tuleva]

Summary

• Replaces outdated WordPress fund comparison (10 funds, basic features) with the current GitHub Pages version (24 funds, full feature set)
• All changes scoped to fund-comparison/ folder — no other theme files touched
• CSS scoped under .fund-comparison, class names renamed (fc-badge, fc-section, fc-footer) to avoid theme conflicts

New features now in WordPress

• Provider tabs (Tuleva, Swedbank, LHV, SEB, Luminor)
• Selected chips UI with remove buttons
• Venn diagram with fee comparison
• Holdings comparison table with stock/ETF level toggle
• Share link (copy to clipboard, uses window.location for any domain)
• CTA section with dynamic fund switch deadline
• ESMA closet indexing analysis (same-provider pairs)
• CSV download for all holdings
• Collapsible details section (scatter, sunburst, sectors, countries)
• Data freshness notice from pipeline
• MSCI ACWI dashed reference line on NAV chart
• Gold asset class support
• GA4 event tracking: fund_selected, fund_comparison, share_link_copied

Data files updated

All 6 JSON data files refreshed from reporting-engine pipeline (Feb 2026 data). New file: etf_metadata.json (coverage badges, ETF sources, proxy mappings).

Test plan

Tested locally via Docker (test.php standalone wrapper):

• All 24 funds visible across provider tabs
• Fund selection, Venn diagram, fee comparison, holdings table
• NAV chart with MSCI ACWI reference line
• Share link, CTA, collapsible details
• Selected chips display side by side
• Verify on production WordPress (full theme with ACF)

🤖 Generated with Claude Code

[stenehrlich-tuleva]

Closing to clear the queue. The payload here is a 2026-03 snapshot (fund_data.json 7.27 MB) and merging it would publish five-month-stale NAV data on a public page. If the theme-hosted comparison tool needs refreshing, regenerate from the current export pipeline rather than landing this branch.