Compact archived evidence transcripts (Refs #159)

tests/client/match-evidence.test.ts

@@ -83,7 +83,7 @@ it('selects messages across participants, previews their context, and attaches t
     );
     expect(fetch.mock.calls[0][0]).toContain('game=t5&guid=11');
     expect(document.querySelector('dialog')?.textContent).toContain('GUID 22');
-    expect(document.querySelector('dialog')?.textContent).toContain('Message time unknown');
+    expect(document.querySelector('dialog')?.textContent).toContain('Unknown time');
     const excerpt = document.querySelector('dialog [aria-label="Preserved conversation excerpt"]')!;
     expect(excerpt.querySelectorAll('li')).toHaveLength(3);
     expect(excerpt.querySelector('.highlighted')?.textContent).toContain('A concerning reply');

tests/client/moderation-case-page.test.ts

@@ -205,6 +205,18 @@ it('preserves original evidence context, linked restrictions, and staff history
     expect(document.body.textContent).toContain('Read-only moderation access');
     expect(document.body.textContent).toContain('Round 9');
     expect(document.body.textContent).toContain('Original log time · 12:34');
+    const evidence = document.querySelector('[aria-labelledby="evidence-title"]')!;
+    expect(
+        evidence.querySelector('[aria-label="Preserved conversation excerpt"]')?.textContent
+    ).toContain('abusive message');
+    const technical = [...evidence.querySelectorAll('details')].find(
+        (node) => node.querySelector('summary')?.textContent === 'Technical details'
+    )!;
+    expect(technical.open).toBe(false);
+    expect(technical.textContent).toContain('Archived chat · theater · match 17');
+    expect(JSON.parse(technical.querySelector('pre')!.textContent!)).toEqual(
+        JSON.parse(detail().case.evidence[0].snapshot!)
+    );
     expect(document.body.textContent).toContain('Check the earlier warning.');
     expect(document.body.textContent).toContain('Prior warning ignored');
     expect(document.body.textContent).toContain('Policy pending');
@@ -223,6 +235,58 @@ it('preserves original evidence context, linked restrictions, and staff history
     expect(document.querySelector('dialog')).toBeNull();
 });
 
+it('summarizes a preserved conversation across midnight and keeps identifiers on demand', () => {
+    const initial = detail();
+    const archive = JSON.parse(initial.case.evidence[0].snapshot!);
+    archive.entries = [
+        {
+            ...archive.entry,
+            messageId: 'subject-message',
+            context: { realTime: '2026-10-16T03:59:00Z', round: 4 },
+            message: { ...archive.entry.message, message: '<b>First message</b>', channel: 'team' }
+        },
+        {
+            ...archive.entry,
+            messageId: 'witness-message',
+            context: { realTime: '2026-10-16T04:01:00Z', round: 9 },
+            message: { ...archive.entry.message, guid: '42', player: 'Witness', message: 'Reply' }
+        },
+        {
+            ...archive.entry,
+            messageId: 'unknown-time',
+            context: { realTime: null, round: null }
+        }
+    ];
+    archive.selectedMessageIds = ['subject-message', 'witness-message'];
+    archive.highlightedMessageIds = ['subject-message'];
+    initial.case.evidence[0].snapshot = JSON.stringify(archive);
+    show(initial);
+    const evidence = document.querySelector('[aria-labelledby="evidence-title"]')!;
+    const excerpt = evidence.querySelector('[aria-label="Preserved conversation excerpt"]')!;
+    const rows = excerpt.querySelectorAll('li');
+    expect(rows).toHaveLength(3);
+    expect(rows[0].classList.contains('highlighted')).toBe(true);
+    expect(rows[1].classList.contains('highlighted')).toBe(false);
+    expect(rows[0].textContent).toContain('Team chat');
+    expect(rows[0].textContent).toContain('<b>First message</b>');
+    expect(rows[0].querySelector('b')).toBeNull();
+    expect(rows[1].textContent).toContain('Selected context');
+    expect(rows[2].textContent).toContain('Unknown time');
+    expect(excerpt.textContent).not.toContain(guid);
+    expect(excerpt.textContent).not.toContain('subject-message');
+    expect(excerpt.textContent).not.toContain('Round');
+    const context = excerpt.previousElementSibling!.textContent!;
+    expect(context).toContain('Kino Der Toten · Match #17');
+    expect(context).toContain('Oct 15, 2026 – Oct 16, 2026');
+    expect(context).toContain('Rounds 4–9 (some unknown)');
+    expect(context).toContain('Times are estimates.');
+    const details = excerpt.nextElementSibling as HTMLDetailsElement;
+    expect(details.open).toBe(false);
+    expect(details.textContent).toContain(`GUID ${guid}`);
+    expect(details.textContent).toContain('Message identifier subject-message');
+    expect(details.textContent).toContain('Message identifier witness-message');
+});
+
 it('locks case restrictions to the recorded identity and revision without closing the case', async () => {
     const updated = detail();
     updated.case.revision = 5;