Expand moderation case workflows

tests/unit/ui-moderation.test.ts

@@ -3,7 +3,7 @@ import { render } from 'svelte/server';
 import { writable } from 'svelte/store';
 import ChatPanel from '../../src/lib/ui/components/ChatPanel.svelte';
 import PlayerScoreboard from '../../src/lib/ui/components/PlayerScoreboard.svelte';
-import { moderationHref } from '../../src/lib/ui/moderation.js';
+import { moderationEventDetail, moderationHref } from '../../src/lib/ui/moderation.js';
 import type { UserRole } from '../../src/lib/auth.js';
 
 const currentPage = writable({
@@ -72,3 +72,41 @@ it('does not invent a game namespace for an unscoped profile', () => {
     expect(target.searchParams.get('guid')).toBe('42');
     expect(target.searchParams.has('game')).toBe(false);
 });
+
+it('presents case decisions and ownership changes as readable history while preserving staff text', () => {
+    expect(
+        moderationEventDetail(
+            JSON.stringify({
+                title: { from: 'open', to: 'constructor' },
+                assignee: { from: 'open', to: 'constructor' }
+            }),
+            'case.updated'
+        )
+    ).toBe('Title: open → constructor\nAssigned to: open → constructor');
+    expect(
+        moderationEventDetail(
+            JSON.stringify({
+                title: { from: 'Report', to: 'Appeal review' },
+                assignee: { from: null, to: 'Moderator' },
+                assigneeId: { from: null, to: 'private-internal-user-id' },
+                status: { from: 'open', to: 'in_review' },
+                reason: 'Reviewing additional evidence'
+            }),
+            'case.updated'
+        )
+    ).toBe(
+        'Title: Report → Appeal review\nAssigned to: Unassigned → Moderator\nStatus: Open → In review\nReviewing additional evidence'
+    );
+    expect(
+        moderationEventDetail(
+            JSON.stringify({ from: 'appeal_denied', reason: 'New evidence' }),
+            'case.reopened'
+        )
+    ).toBe('Previous outcome: Appeal denied\nNew evidence');
+    expect(moderationEventDetail('Decision with {unusual text}', 'case.resolved')).toBe(
+        'Decision with {unusual text}'
+    );
+    expect(
+        moderationEventDetail(JSON.stringify({ count: 2, matchId: 42 }), 'case.evidence_attached')
+    ).toBe('2 archived chat entries attached from match #42.');
+});