Add TerminalFin to Market Data & Data Sources

[fintp0]

Adds TerminalFin — a free web-based financial terminal built on public data:

• Central-bank rate-move probabilities (BOJ, Fed, ECB, BOE, RBA) computed from meeting-dated OIS trades in the public CFTC Swap Data Repository tape, with a live published accuracy record (hit rate + Brier score, misses included)
• Swaption volatility surfaces derived from the same SDR tape
• Japan/US FX-intervention log with automatic strike detection
• Cross-country macro dashboards (GDP, CPI, debt, money & liquidity)
• Japan equity analytics from EDINET / JPX filings (large shareholders, short selling, activist signals)

Free to use, no registration required for the public pages. Placed next to the other terminal-style entries (OpenBB, Fincept) in Market Data & Data Sources.

[wilsonfreitas]

Thanks for the contribution. TerminalFin is a hosted proprietary financial terminal without substantive public source, so it should be listed under Commercial & Proprietary Services, not Market Data & Data Sources. Please support the permanent free/no-registration claim with stable public access terms and documentation. The current functional-section entry also fails validation because it has no required backtick tag; tags are optional after moving it to the commercial section.