Add LLM digest setup and share timestamp context

test/features/ai_digest/ai_digest_response_parser_test.dart

@@ -10,10 +10,14 @@ void main() {
         "suggestions": [
           {
             "personToken": "person_001",
-            "kind": "giftIdea",
+            "kind": "eventIdea",
             "title": "Coffee tasting set",
             "details": "Pick a small local sampler.",
             "suggestedTiming": "2026-05-20T18:00:00Z",
+            "eventEndsAt": "2026-05-20T20:00:00Z",
+            "eventLocation": "Local roaster hall",
+            "eventUrl": "https://example.com/events/coffee",
+            "sourceUrls": ["https://example.com/events/coffee"],
             "confidence": 0.82,
             "reason": "Matches known interests."
           }
@@ -28,8 +32,13 @@ void main() {
     expect(result.success, isTrue);
     expect(result.drafts, hasLength(1));
     expect(result.drafts.single.personId, 'p-1');
-    expect(result.drafts.single.kind, AiSuggestionKind.giftIdea);
+    expect(result.drafts.single.kind, AiSuggestionKind.eventIdea);
     expect(result.drafts.single.status, AiSuggestionStatus.pending);
+    expect(result.drafts.single.eventLocation, 'Local roaster hall');
+    expect(result.drafts.single.eventUrl, 'https://example.com/events/coffee');
+    expect(result.drafts.single.sourceUrls, <String>[
+      'https://example.com/events/coffee',
+    ]);
   });
 
   test('rejects unknown person tokens and malformed items', () {