fix(issue-assistant): poll only open issues

lib/src/github_client.dart

@@ -22,6 +22,7 @@ class GitHubClient {
     final queryParts = <String>[
       for (final repo in repoList) 'repo:${repo.fullName}',
       'is:issue',
+      'state:open',
       if (since != null) 'updated:>=${since.toUtc().toIso8601String()}',
     ];
 

test/issue_assistant_app_test.dart

@@ -1261,16 +1261,19 @@ projects:
     });
 
     /// ```gherkin
-    /// Scenario: Aggregate one search request across multiple enabled projects
+    /// Scenario: Aggregate one search request across multiple enabled projects while ignoring closed issues
     ///   Given two temporary project checkouts that can be used as local repo paths
     ///   And GitHub issue data containing an explicit assistant mention in each repository
+    ///   And one of the search results is a closed issue
     ///   And a responder that emits a planning reply
     ///   And an orchestrator-style config with both repositories enabled
     ///   When the app processes one polling cycle
-    ///   Then it fetches issue updates through one aggregate GitHub search request
+    ///   Then it fetches issue updates through one aggregate GitHub search request for open issues only
     ///   And it still posts one reply in each repository
     /// ```
-    test('Aggregate one search request across multiple enabled projects', () async {
+    test(
+      'Aggregate one search request across multiple enabled projects while ignoring closed issues',
+      () async {
         // Given two temporary project checkouts that can be used as local repo paths.
         final sandbox = await Directory.systemTemp.createTemp(
           'cws-aggregate-search-',
@@ -1315,6 +1318,16 @@ projects:
                 'user': {'login': 'reporter-two'},
                 'labels': const [],
               },
+              {
+                'number': 23,
+                'title': 'Repo two closed mention',
+                'body': 'closed repo issue',
+                'state': 'closed',
+                'html_url': 'https://example.test/owner/repo-two/issues/23',
+                'updated_at': '2026-04-04T17:02:00Z',
+                'user': {'login': 'reporter-three'},
+                'labels': const [],
+              },
             ],
           },
           commentResponsesByRepo: {
@@ -1343,6 +1356,17 @@ projects:
                   'user': {'login': 'reporter-two'},
                 },
               ],
+              23: [
+                {
+                  'id': 230,
+                  'body': '@helper please review closed repo two',
+                  'html_url':
+                      'https://example.test/owner/repo-two/issues/23#issuecomment-230',
+                  'created_at': '2026-04-04T17:02:00Z',
+                  'updated_at': '2026-04-04T17:02:00Z',
+                  'user': {'login': 'reporter-three'},
+                },
+              ],
             },
           },
           postCommentIssueNumbersByRepo: {
@@ -1362,7 +1386,9 @@ projects:
         });
 
         // And an orchestrator-style config with both repositories enabled.
-      final configFile = File(p.join(sandbox.path, 'agent-orchestrator.yaml'));
+        final configFile = File(
+          p.join(sandbox.path, 'agent-orchestrator.yaml'),
+        );
         await configFile.writeAsString('''
 defaults:
   issueAssistant:
@@ -1390,12 +1416,13 @@ projects:
         await app.runOnce();
         await app.close();
 
-      // Then it fetches issue updates through one aggregate GitHub search request.
+        // Then it fetches issue updates through one aggregate GitHub search request for open issues only.
         final logLines = await ghLog.readAsLines();
-      expect(
-        logLines.where((line) => line.contains('search/issues')).length,
-        1,
-      );
+        final searchLogs = logLines
+            .where((line) => line.contains('search/issues'))
+            .toList();
+        expect(searchLogs.length, 1);
+        expect(searchLogs.single, contains('state:open'));
 
         // And it still posts one reply in each repository.
         expect(
@@ -1416,6 +1443,16 @@ projects:
               .length,
           2,
         );
-    });
+        expect(
+          logLines
+              .where(
+                (line) =>
+                    line.contains('repos/owner/repo-two/issues/23/comments'),
+              )
+              .length,
+          0,
+        );
+      },
+    );
   });
 }

test/test_support.dart

@@ -50,6 +50,19 @@ Future<void> writeFakeGhScript({
           final rightUpdatedAt = right['updated_at'] as String? ?? '';
           return leftUpdatedAt.compareTo(rightUpdatedAt);
         });
+  final openSearchItems = searchItems
+      .where((item) => item['state'] == 'open')
+      .toList(growable: false);
+  final allSearchResponse = jsonEncode({
+    'total_count': searchItems.length,
+    'incomplete_results': false,
+    'items': searchItems,
+  });
+  final openSearchResponse = jsonEncode({
+    'total_count': openSearchItems.length,
+    'incomplete_results': false,
+    'items': openSearchItems,
+  });
 
   final buffer = StringBuffer()
     ..writeln('#!/usr/bin/env bash')
@@ -79,15 +92,21 @@ Future<void> writeFakeGhScript({
 
   buffer
     ..writeln(r'''if [[ "$1" == "api" && "$4" == "search/issues" ]]; then''')
+    ..writeln(r'''  query=""''')
+    ..writeln(r'''  for arg in "$@"; do''')
+    ..writeln(r'''    if [[ "$arg" == q=* ]]; then''')
+    ..writeln(r'''      query="${arg#q=}"''')
+    ..writeln(r'''    fi''')
+    ..writeln(r'''  done''')
+    ..writeln(r'''  if [[ "$query" == *"state:open"* ]]; then''')
     ..writeln("  cat <<'JSON'")
-    ..writeln(
-      jsonEncode({
-        'total_count': searchItems.length,
-        'incomplete_results': false,
-        'items': searchItems,
-      }),
-    )
+    ..writeln(openSearchResponse)
     ..writeln('JSON')
+    ..writeln(r'''  else''')
+    ..writeln("  cat <<'JSON'")
+    ..writeln(allSearchResponse)
+    ..writeln('JSON')
+    ..writeln(r'''  fi''')
     ..writeln('  exit 0')
     ..writeln('fi');