claude-owner a4a4a7f98c feat(targets): price target/stop simulator with chart overlay lines ...

- New lib/targets.ts: per-code localStorage (key `targets:<code>`) with
  read/write/clear; rejects non-positive/non-finite values.
- New PriceTargets sidebar panel: 목표가/손절가 inputs, live %-from-current
  preview (rose=up, sky=down), save/clear actions.
- StockChart accepts optional `targets` prop and draws dashed horizontal
  price lines on the candle series (rose=target, sky=stop) with axis labels.
- Page loads saved targets on mount/code-change and re-renders chart on save.

Also fixes view-counter dedupe caveat from reviewer: split into
wasRecordedToday() + markRecorded(); the page now marks localStorage only
after POST /api/views succeeds, so a failed POST stays retryable on the
next visit instead of being silently swallowed for the day.

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

2026-05-29 00:01:43 +09:00

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