fix(plugin): graceful chmod failure in SessionStats init (#1206)

Wrap os.chmod() in try/except OSError so that PermissionError on
managed home directories or restricted environments no longer crashes
the entire plugin. A stderr warning is emitted instead.

Closes #1206

Author: JeremyDev87

packages/claude-code-plugin/hooks/lib/stats.py

@@ -40,7 +40,13 @@ def __init__(self, session_id: str, data_dir: Optional[str] = None, flush_interv
         self.data_dir = data_dir
         os.makedirs(self.data_dir, mode=0o700, exist_ok=True)
         # Fix permissions if dir already existed
-        os.chmod(self.data_dir, 0o700)
+        try:
+            os.chmod(self.data_dir, 0o700)
+        except OSError:
+            import sys
+            sys.stderr.write(
+                f"[codingbuddy] Warning: could not set permissions on {self.data_dir}\n"
+            )
 
         self.stats_file = os.path.join(self.data_dir, f"{session_id}.json")
 

packages/claude-code-plugin/tests/test_stats.py

@@ -51,6 +51,18 @@ def test_default_data_dir(self, monkeypatch):
         expected_dir = os.path.join(os.path.expanduser("~"), ".codingbuddy")
         assert os.path.isdir(expected_dir)
 
+    def test_chmod_failure_graceful(self, tmp_path, monkeypatch):
+        """chmod failure should not crash initialization."""
+        d = str(tmp_path / "restricted_dir")
+        os.makedirs(d, mode=0o700)
+
+        def failing_chmod(*args, **kwargs):
+            raise PermissionError("Operation not permitted")
+
+        monkeypatch.setattr(os, "chmod", failing_chmod)
+        s = SessionStats(session_id="perm-test", data_dir=d)
+        assert os.path.isdir(d)
+
 
 class TestRecordToolCall:
     def test_increments_count(self, stats):