refactor(simbolo): extraer la geometría del ≡ a lib/simbolo.ts

lib/simbolo.ts

@@ -0,0 +1,22 @@
+// Single source of truth for the ≡ glyph geometry. Both SimboloTresLineas
+// (which draws it with <rect>) and SecuenciaClaridad (which resolves into it
+// with <line>) read from here, so the symbol they produce is provably the
+// same one and not a lookalike.
+
+export const VIEWBOX_SIMBOLO = '0 0 64 64';
+
+export const BARRAS_SIMBOLO = [
+  { x: 13, y: 13, width: 38, height: 8 },
+  { x: 13, y: 28, width: 38, height: 8 },
+  { x: 13, y: 43, width: 38, height: 8 },
+] as const;
+
+// Same three bars as strokes: a horizontal line through each bar's centre,
+// with the bar's height as stroke width.
+export const LINEAS_SIMBOLO = BARRAS_SIMBOLO.map((b) => ({
+  x1: b.x,
+  y1: b.y + b.height / 2,
+  x2: b.x + b.width,
+  y2: b.y + b.height / 2,
+  grosor: b.height,
+}));