SimTradeDesk v0.6.5

Bug Fixes

• Show actual error details on download failure instead of generic message
• Lite data no longer blocks full data download due to version comparison mismatch
• Fix double-nested cn/cn directory after extracting lite tarball
• Default backtest dates now reflect actual date range of current market data
• Dark theme now applies to history version diff view
• verifyAccess errors now show the real reason instead of always "Subscription expired"
• Edge Function verify-access adds CORS preflight support, fixing dev environment cross-origin errors
• feature_flags table min_tier changed from free to basic to match frontend TIER_LEVEL