Support custom-title entries in session summary

  Sessions renamed via /rename now display the custom title  in the session picker instead of the auto-generated summary.

Author: TobyBackstrom

src/claude_code_transcripts/__init__.py

@@ -115,14 +115,30 @@ def get_session_summary(filepath, max_length=200):
 def _get_jsonl_summary(filepath, max_length=200):
     """Extract summary from JSONL file."""
     try:
+        # First priority: custom title (user renamed session via /rename)
+        with open(filepath, "r", encoding="utf-8") as f:
+            for line in f:
+                line = line.strip()
+                if not line:
+                    continue
+                try:
+                    obj = json.loads(line)
+                    if obj.get("type") == "custom-title" and obj.get("customTitle"):
+                        title = obj["customTitle"]
+                        if len(title) > max_length:
+                            return title[: max_length - 3] + "..."
+                        return title
+                except json.JSONDecodeError:
+                    continue
+
+        # Second priority: summary type entries
         with open(filepath, "r", encoding="utf-8") as f:
             for line in f:
                 line = line.strip()
                 if not line:
                     continue
                 try:
                     obj = json.loads(line)
-                    # First priority: summary type entries
                     if obj.get("type") == "summary" and obj.get("summary"):
                         summary = obj["summary"]
                         if len(summary) > max_length:
@@ -131,7 +147,7 @@ def _get_jsonl_summary(filepath, max_length=200):
                 except json.JSONDecodeError:
                     continue
 
-        # Second pass: find first non-meta user message
+        # Third pass: find first non-meta user message
         with open(filepath, "r", encoding="utf-8") as f:
             for line in f:
                 line = line.strip()

tests/test_generate_html.py

@@ -1076,6 +1076,26 @@ def test_truncates_long_summaries(self, tmp_path):
         assert len(summary) <= 100
         assert summary.endswith("...")
 
+    def test_gets_custom_title_from_jsonl(self, tmp_path):
+        """Test extracting custom title from JSONL file (set via /rename)."""
+        jsonl_file = tmp_path / "test.jsonl"
+        jsonl_file.write_text(
+            '{"type":"custom-title","customTitle":"GIT stuff","sessionId":"abc123"}\n'
+            '{"type":"user","message":{"content":"Hello"}}\n'
+        )
+        summary = get_session_summary(jsonl_file)
+        assert summary == "GIT stuff"
+
+    def test_custom_title_takes_priority_over_summary(self, tmp_path):
+        """Test that custom title takes priority over summary entry."""
+        jsonl_file = tmp_path / "test.jsonl"
+        jsonl_file.write_text(
+            '{"type":"custom-title","customTitle":"My Custom Title","sessionId":"abc123"}\n'
+            '{"type":"summary","summary":"Auto-generated summary"}\n'
+        )
+        summary = get_session_summary(jsonl_file)
+        assert summary == "My Custom Title"
+
 
 class TestFindLocalSessions:
     """Tests for find_local_sessions which discovers local JSONL files."""