feat: initialize sunrise with 100-player shared rooms

tests/solar.test.ts

@@ -0,0 +1,11 @@
+import { test } from 'node:test';
+import assert from 'node:assert/strict';
+import { ANGLE_TOLERANCE, compareSolar, solarCases } from './solar-cases.ts';
+
+for (const iso of solarCases) {
+  test(`SunCalc 2.x vs NOAA: nonnegative altitude / azimuth 0.1°, negative altitude 0.5°: ${iso}`, () => {
+    const comparison = compareSolar(iso);
+    assert.ok(comparison.azimuthError <= ANGLE_TOLERANCE, `azimuth error ${comparison.azimuthError}°`);
+    assert.ok(comparison.altitudeError <= comparison.altitudeTolerance, `altitude error ${comparison.altitudeError}°`);
+  });
+}