Function resolveTitleIcon

resolveTitleIcon(
    layerId: string | undefined,
    feature: Record<string, unknown> | undefined,
    surface: RenderSurface,
): string | null
Asks the taxonomy seam for the icon to show next to a feature's TITLE on a surface (the legacy "category icon before the title" behaviour), honouring the per-surface render flags. Ensures the sprite when an icon resolves. Returns the sprite symbolId (for <use href="#…">) or null — null (no icon) in every case where the taxonomy seam is absent, the layer is unbound, no flag is on, or nothing resolves, so a surface stays byte-identical until a profile opts in.
Parameters
- layerId: string | undefined
  GeoLeaf layer id (from the render context).
- feature: Record<string, unknown> | undefined
  Raw feature property bag.
- surface: RenderSurface
  The surface being rendered.
Returns string | null
The sprite symbolId to prefix before the title, or null.
- Defined in src/capabilities/feature-info/render/dom.ts:307