fix(chart): MACRO BOTTOM marker now follows candles on pan / zoom / resize

User report: the dashed vertical line + "MACRO BOTTOM" label could be
visually "dragged" — it wasn't actually draggable, but it stayed glued
to a fixed pixel column on screen while the candles slid out from under
it on pan, so the label ended up pointing at unrelated candles.

Root cause: the line + label are absolutely-positioned DOM nodes (the
lightweight-charts library has no first-class vertical-marker primitive).
The data effect set their `left` ONCE via timeScale.timeToCoordinate()
and then never updated again. Every user interaction that changes the
visible range — pan, wheel zoom, programmatic setVisibleRange, window
resize — invalidates that pixel coordinate.

Fix:
  - Store the signal's bucketTime + label text in refs.
  - Hoist the "project bucketTime → pixel X" logic into a single
    `reposition()` fn captured in repositionMacroRef.
  - Subscribe to `timeScale().subscribeVisibleTimeRangeChange(reposition)`
    so it fires on every pan / zoom / data update.
  - Wire it into the ResizeObserver too (width change ⇒ new pixel space).
  - Re-run from the data effect whenever the signal changes.
  - Hide (opacity: 0) instead of clamping when the signal candle scrolls
    outside the visible range — a clamped label glued to the chart edge
    is actively misleading.
  - Drop `transition: left 160ms` on both nodes — that transition fires
    on every pan frame and makes the marker LAG behind the candles,
    reproducing the original visual bug for fast pans.

Verified via DOM scripting:
  pan right ⇒ label_left 744px → 344px (follows candles ✓)
  big right-pan past signal ⇒ opacity 1 → 0 (hides cleanly ✓)
  zoom out ⇒ opacity 0 → 1, label re-projects to new pixel space ✓

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

next-env.d.ts

@@ -1,6 +1,6 @@
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
-import "./.next/types/routes.d.ts";
+import "./.next/dev/types/routes.d.ts";
 
 // NOTE: This file should not be edited
 // see https://nextjs.org/docs/app/api-reference/config/typescript for more information.