Method getHyperlinkAt

src/ink/ink.tsx:1446–1457

* Look up the URL at (col, row) in the current front frame. Checks for * an OSC 8 hyperlink first, then falls back to scanning the row for a * plain-text URL (mouse tracking intercepts the terminal's native * Cmd+Click URL detection, so we replicate it). This is a pure lookup * with no s

(col: number, row: number)

   * the browser-open action via a timer.
   */
  getHyperlinkAt(col: number, row: number): string | undefined {
    if (!this.altScreenActive) return undefined;
    const screen = this.frontFrame.screen;
    const cell = cellAt(screen, col, row);
    let url = cell?.hyperlink;
    // SpacerTail cells (right half of wide/CJK/emoji chars) store the
    // hyperlink on the head cell at col-1.
    if (!url && cell?.width === CellWidth.SpacerTail && col > 0) {
      url = cellAt(screen, col - 1, row)?.hyperlink;
    }
    return url ?? findPlainTextUrlAt(screen, col, row);
  }

  /**
   * Optional callback fired when clicking an OSC 8 hyperlink in fullscreen