circuitjson-toolkit 1.1.2

Deterministic schematic paint

This patch removes browser-dependent SVG fill behavior from the canonical
schematic renderer.

Open arcs, polylines, and unfilled shapes now emit fill="none" explicitly,
so they cannot become black-filled in a browser or host stylesheet.
Filled schematic primitives retain a valid authored fill_color or
fillColor. When is_filled: true has no authored paint, rendering uses
var(--schematic-fill-color, #f1d8bd).
Generic schematic_component and schematic_symbol bodies now emit the
shared schematic fill and default-ink theme variables explicitly.
Filled paths render as polygons; open paths remain polylines. This preserves
geometry while making fill intent unambiguous.
Unsafe authored paints remain rejected by the existing SVG paint sanitizer.

Public exports, method names, parameters, CircuitJSON document envelopes, and
renderer return shapes are unchanged from 1.1.1.