feat(flags): add comment flags (#1140)

* feat(flags): add comment flags

* fix(flags): address review feedback

* fix(flags): clear stale flag publish data

src/lib/__tests__/board-flags.test.ts

@@ -0,0 +1,38 @@
+import { describe, expect, it } from 'vitest';
+import { getBoardFlagDefinition, normalizeBoardFlagKind } from '../board-flags';
+
+describe('board-flags', () => {
+  it('normalizes board flag kind aliases', () => {
+    expect(normalizeBoardFlagKind('pol')).toBe('pol');
+    expect(normalizeBoardFlagKind('memeflags')).toBe('pol');
+    expect(normalizeBoardFlagKind('mlp')).toBe('pony');
+    expect(normalizeBoardFlagKind('unknown')).toBeUndefined();
+  });
+
+  it('maps political flags to the flags-2 sprite grid', () => {
+    expect(getBoardFlagDefinition('pol', 'AC')).toMatchObject({
+      code: 'AC',
+      label: 'Anarcho-Capitalist',
+      spritePath: 'assets/icons/flags-2.png',
+      width: 16,
+      height: 12,
+      x: 0,
+      y: 0,
+    });
+    expect(getBoardFlagDefinition('pol', 'WP')).toMatchObject({ code: 'WP', x: 64, y: 48 });
+  });
+
+  it('maps pony flags to the flags-pony sprite grid', () => {
+    expect(getBoardFlagDefinition('pony', '4CC')).toMatchObject({
+      code: '4CC',
+      label: '4cc /mlp/',
+      spritePath: 'assets/icons/flags-pony.png',
+      width: 16,
+      height: 16,
+      x: 0,
+      y: 0,
+    });
+    expect(getBoardFlagDefinition('pony', 'AJ')).toMatchObject({ code: 'AJ', label: 'Applejack', x: 80, y: 0 });
+    expect(getBoardFlagDefinition('pony', 'ZS')).toMatchObject({ code: 'ZS', label: 'Zipp Storm', x: 16, y: 144 });
+  });
+});