Add fleet groups, agent screenshots, deploy guards, and Crucible polish.

server/web/src/help/matrixRainEffects.test.ts

@@ -0,0 +1,14 @@
+import { describe, it, expect } from 'vitest';
+import { pickMysticWord, wordColumnSpan, MYSTIC_WORD_DROPS } from './matrixRainEffects';
+
+describe('matrixRainEffects', () => {
+  it('pickMysticWord returns known words', () => {
+    const w = pickMysticWord();
+    expect(MYSTIC_WORD_DROPS).toContain(w);
+  });
+
+  it('wordColumnSpan matches string length', () => {
+    expect(wordColumnSpan('DESTROY')).toBe(7);
+    expect(wordColumnSpan('BLACK MAGIC')).toBe(11);
+  });
+});