From 87866fdbbe72b8de7acbf1e06cd687040ab211cd Mon Sep 17 00:00:00 2001
From: Saksham Singh <130738043+Saksham1105@users.noreply.github.com>
Date: Sun, 25 Oct 2026 14:27:42 +0530
Subject: [PATCH 1/2] fix(compressor): handle empty LLM response content

---
 devagent/session/compressor.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/devagent/session/compressor.py b/devagent/session/compressor.py
index 4fbd4b5..207f0a2 100644
--- a/devagent/session/compressor.py
+++ b/devagent/session/compressor.py
@@ -199,7 +199,7 @@ def compress_session(
 
     try:
         response = llm.complete_with_tools(messages, tools=[])
-        summary = response.content.strip()
+        summary = (response.content or "").strip()
     except Exception as exc:
         summary = f"[Compression failed: {exc}]\n\n" + old_text[:2000]
 

From bde341dc3e15d6660f821db65f42f9d8386d5971 Mon Sep 17 00:00:00 2001
From: Saksham Singh <130738043+Saksham1105@users.noreply.github.com>
Date: Sun, 25 Oct 2026 14:27:45 +0530
Subject: [PATCH 2/2] test(compressor): cover None response content

---
 tests/test_phase8.py | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/tests/test_phase8.py b/tests/test_phase8.py
index 2d630f0..7baa61c 100644
--- a/tests/test_phase8.py
+++ b/tests/test_phase8.py
@@ -232,6 +232,28 @@ def test_compress_session_summarises_old_events(tmp_path):
     llm.complete_with_tools.assert_called_once()
 
 
+
+def test_compress_session_falls_back_when_response_content_is_none(tmp_path):
+    """A provider returning no text should use the raw-event fallback."""
+    db = tmp_path / "test.db"
+    from devagent.session import store
+    from devagent.session.compressor import compress_session
+
+    store.init_schema(db_path=db)
+    sid = "sess-none-content"
+    store.create_session(sid, db_path=db)
+    _seed_events(sid, 8, db)
+
+    llm = _make_mock_llm()
+    llm.complete_with_tools.return_value.content = None
+
+    result = compress_session(sid, llm, keep_last_n=3, db_path=db)
+
+    assert result is not None
+    assert "[Compression failed" not in result.summary
+    assert "[USER] Event 0:" in result.summary
+    assert store.get_compressed_summary(sid, db_path=db) == result.summary
+
 def test_compress_session_marks_events_in_db(tmp_path):
     db = tmp_path / "test.db"
     from devagent.session import store