feat: 完善时标与天象几何计算并扩展输出接口

- 新增时标、ΔT 模型、质心时间与 UT1 支持
- 改进日月食、月掩、行星事件及路径边界计算
- 完善恒星三维自行与动态距离传播
- 扩展 SVG、GeoJSON、KML 输出与底层距离换算工具
- 整理中英文手册、示例资源及回归测试

basic/solar_eclipse_total_envelope_test.go

@@ -12,7 +12,7 @@ func TestSolarEclipseTotalEnvelopeHorizonEndpoints(t *testing.T) {
 		{2008, 8, 1}, {2024, 4, 8}, {2026, 8, 12},
 	} {
 		t.Run(fmt.Sprintf("%04d-%02d-%02d", date[0], date[1], date[2]), func(t *testing.T) {
-			seed := JDECalc(date[0], date[1], float64(date[2]))
+			seed := JDCalc(date[0], date[1], float64(date[2]))
 			result := SolarEclipsePartialFootprints(seed, SolarEclipsePartialFootprintOptions{
 				StepDays: 2.0 / 1440, BoundaryPoints: 96, MagnitudeValues: []float64{1},
 			})
@@ -53,7 +53,7 @@ func TestSolarEclipseTotalEnvelopeHorizonEndpoints(t *testing.T) {
 }
 
 func BenchmarkSolarEclipsePolarTotalBand(b *testing.B) {
-	seed := JDECalc(2003, 11, 23)
+	seed := JDCalc(2003, 11, 23)
 	for i := 0; i < b.N; i++ {
 		SolarEclipsePartialFootprints(seed, SolarEclipsePartialFootprintOptions{
 			StepDays: 2.0 / 1440, BoundaryPoints: 96, DisableRiseSetCurves: true,