feat: add pcb_courtyard_polygon and pcb_courtyard_circle to footprint TSX generation

Resolves tscircuit/tscircuit#1081 — make sure kicad component components create courtyards.

Adds <courtyardpolygon> and <courtyardcircle> JSX element generation to
generate-footprint-tsx.tsx, covering all 4 courtyard circuit-json types:
- pcb_courtyard_outline → <courtyardoutline> (existing)
- pcb_courtyard_rect → <courtyardrect> (existing)
- pcb_courtyard_polygon → <courtyardpolygon> (new)
- pcb_courtyard_circle → <courtyardcircle> (new)

Tests added to verify both new element types are emitted correctly.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: Kabi10

lib/generate-footprint-tsx.tsx

@@ -282,6 +282,51 @@ export const generateFootprintTsx = (
     elementStrings.push(`<courtyardrect ${attrs.join(" ")} />`)
   }
 
+  const courtyardPolygons = (su(circuitJson) as any).pcb_courtyard_polygon?.list() ?? []
+  for (const courtyardPolygon of courtyardPolygons) {
+    const courtyardPolygonAny = courtyardPolygon as any
+    const attrs = [
+      `points={${JSON.stringify(courtyardPolygonAny.points ?? [])}}`,
+    ]
+
+    if (courtyardPolygonAny.stroke_width !== undefined) {
+      attrs.push(`strokeWidth={${courtyardPolygonAny.stroke_width}}`)
+    }
+    if (courtyardPolygonAny.is_filled !== undefined) {
+      attrs.push(`isFilled={${courtyardPolygonAny.is_filled}}`)
+    }
+    if (courtyardPolygonAny.has_stroke !== undefined) {
+      attrs.push(`hasStroke={${courtyardPolygonAny.has_stroke}}`)
+    }
+    if (courtyardPolygonAny.is_stroke_dashed !== undefined) {
+      attrs.push(`isStrokeDashed={${courtyardPolygonAny.is_stroke_dashed}}`)
+    }
+    if (courtyardPolygonAny.color !== undefined) {
+      attrs.push(`color="${courtyardPolygonAny.color}"`)
+    }
+
+    elementStrings.push(`<courtyardpolygon ${attrs.join(" ")} />`)
+  }
+
+  const courtyardCircles = (su(circuitJson) as any).pcb_courtyard_circle?.list() ?? []
+  for (const courtyardCircle of courtyardCircles) {
+    const courtyardCircleAny = courtyardCircle as any
+    const attrs = [
+      `pcbX={${courtyardCircleAny.center?.x ?? 0}}`,
+      `pcbY={${courtyardCircleAny.center?.y ?? 0}}`,
+      `radius={${courtyardCircleAny.radius ?? 0}}`,
+    ]
+
+    if (courtyardCircleAny.stroke_width !== undefined) {
+      attrs.push(`strokeWidth={${courtyardCircleAny.stroke_width}}`)
+    }
+    if (courtyardCircleAny.color !== undefined) {
+      attrs.push(`color="${courtyardCircleAny.color}"`)
+    }
+
+    elementStrings.push(`<courtyardcircle ${attrs.join(" ")} />`)
+  }
+
   if (elementStrings.length === 0) {
     return null
   }

tests/test8-support-courtyard.test.tsx

@@ -98,6 +98,76 @@ const projectCourtyardToFabricationNotes = (courtyardElements: any[]) => {
   return projected
 }
 
+test("test8 support courtyard polygon and circle", () => {
+  const tscircuit = convertCircuitJsonToTscircuit(circuitJson2, {
+    componentName: "Test8bComponent",
+  })
+
+  expect(tscircuit).toContain("<courtyardpolygon")
+  expect(tscircuit).toContain(`points={[{"x":-1,"y":-1},{"x":1,"y":-1},{"x":0,"y":1}]}`)
+  expect(tscircuit).toContain("<courtyardcircle")
+  expect(tscircuit).toContain("pcbX={2}")
+  expect(tscircuit).toContain("pcbY={1}")
+  expect(tscircuit).toContain("radius={0.8}")
+})
+
+const circuitJson2: any = [
+  {
+    type: "source_component",
+    source_component_id: "generic_1",
+    supplier_part_numbers: {},
+  },
+  {
+    type: "schematic_component",
+    schematic_component_id: "schematic_generic_component_1",
+    source_component_id: "generic_1",
+    center: { x: 0, y: 0 },
+    rotation: 0,
+    size: { width: 0, height: 0 },
+  },
+  {
+    type: "pcb_component",
+    source_component_id: "generic_1",
+    pcb_component_id: "pcb_generic_component_1",
+    layer: "top",
+    center: { x: 0, y: 0 },
+    rotation: 0,
+    width: 2,
+    height: 1,
+  },
+  {
+    type: "pcb_smtpad",
+    pcb_smtpad_id: "pcb_smtpad_1",
+    shape: "rect",
+    x: 0,
+    y: 0,
+    width: 0.5,
+    height: 0.5,
+    layer: "top",
+    pcb_component_id: "pcb_generic_component_1",
+    port_hints: ["1"],
+  },
+  {
+    type: "pcb_courtyard_polygon",
+    pcb_courtyard_polygon_id: "pcb_courtyard_polygon_0",
+    pcb_component_id: "pcb_generic_component_1",
+    layer: "top",
+    points: [
+      { x: -1, y: -1 },
+      { x: 1, y: -1 },
+      { x: 0, y: 1 },
+    ],
+  },
+  {
+    type: "pcb_courtyard_circle",
+    pcb_courtyard_circle_id: "pcb_courtyard_circle_0",
+    pcb_component_id: "pcb_generic_component_1",
+    layer: "top",
+    center: { x: 2, y: 1 },
+    radius: 0.8,
+  },
+]
+
 const circuitJson: any = [
   {
     type: "source_component",