claude-owner 1e0c917f68 feat(chart): CSV export of current chart range + fix ShareButton comment ...

- New lib/csv.ts: RFC 4180 escaping, UTF-8 BOM prefix (한글 Excel 호환),
  Blob + temporary anchor download, filename
  `<name>_<code>_<interval>_<from>_<to>.csv` with filesystem-illegal
  characters replaced by `_`.
- StockChart toolbar now always renders (was hidden in 10m intraday mode
  because it gated on showSma) and includes a right-aligned `⬇ CSV`
  button next to the SMA/RSI/MACD chips. Button is disabled when ohlcv
  is empty.

Also addresses the reviewer's non-blocking note on f18493f:
ShareButton.tsx header comment claimed clipboard-first, but the code
calls navigator.share() first. Comment now matches the actual order:
share → clipboard → execCommand → "복사 안됨".

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

2026-05-29 00:11:57 +09:00

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