Bound index extraction stall handling

changelog.d/unreleased/2665.fixed.md

@@ -0,0 +1,20 @@
+---
+category: fixed
+issues:
+  - 2665
+  - 2680
+  - 2683
+affected:
+  - src/CodeIndex/Indexer/Symbols/SymbolExtractor.cs
+  - src/CodeIndex/Cli/IndexCommandRunner.cs
+  - src/CodeIndex/Cli/CommandErrorCodes.cs
+  - tests/CodeIndex.Tests/IndexCommandRunnerTests.cs
+---
+
+## English
+
+- **Full index refresh now fails with a bounded extraction-stall diagnostic (#2665, #2680, #2683)** — full scans detect when extraction stops making progress and report the active file/phase instead of waiting indefinitely on a large source file.
+
+## 日本語
+
+- **フルインデックス更新が抽出停止時に有界な診断で失敗するようになりました (#2665, #2680, #2683)** — フルスキャンで抽出の進捗が止まった場合、巨大なソースファイルで待ち続ける代わりに、処理中のファイルとフェーズを報告します。

src/CodeIndex/Cli/CommandErrorCodes.cs

@@ -50,4 +50,7 @@ internal static class CommandErrorCodes
 
     /// <summary>The user interrupted the command with Ctrl-C / SIGINT.</summary>
     public const string Interrupted = "E012_INTERRUPTED";
+
+    /// <summary>Index extraction made no forward progress within the bounded stall timeout.</summary>
+    public const string IndexExtractionStalled = "E013_INDEX_EXTRACTION_STALLED";
 }