fix: use context manager for file reads in code_projects_api.py

backend/app/modules/code/code_projects_api.py

@@ -1296,7 +1296,8 @@ async def get_pipeline_results(
         results_path = os.path.join(repo_dir, "pipeline_results.json")
         if os.path.exists(results_path):
             try:
-                data = json.loads(open(results_path, encoding="utf-8").read())
+                with open(results_path, encoding="utf-8") as _f:
+                    data = json.loads(_f.read())
                 return PipelineRunResponse(**data)
             except (json.JSONDecodeError, TypeError):
                 pass
@@ -1370,7 +1371,8 @@ async def auto_fix_pipeline(
     results_path = os.path.join(repo_dir, "pipeline_results.json")
     if os.path.exists(results_path):
         try:
-            prev = json.loads(open(results_path, encoding="utf-8").read())
+            with open(results_path, encoding="utf-8") as _f:
+                prev = json.loads(_f.read())
             failed_steps = [s for s in prev.get("steps", []) if s.get("status") == "failed"]
         except (json.JSONDecodeError, TypeError):
             pass

backend/tests/test_pr_06_code_projects_files.py

@@ -0,0 +1,44 @@
+"""Test that code_projects_api.py uses context managers for file reads.
+
+Verifies no open().read() patterns remain that would leave file handles unclosed.
+"""
+import re
+import os
+
+
+def test_no_unclosed_file_reads():
+    """Verify no open(...).read() patterns remain in code_projects_api.py."""
+    module_path = os.path.join(
+        os.path.dirname(__file__),
+        "..",
+        "app",
+        "modules",
+        "code",
+        "code_projects_api.py",
+    )
+    with open(module_path, "r", encoding="utf-8") as f:
+        source = f.read()
+
+    unclosed = re.findall(r"open\([^)]+\)\.read\(\)", source)
+    assert len(unclosed) == 0, (
+        f"Found {len(unclosed)} unclosed file read(s) in code_projects_api.py"
+    )
+
+
+def test_results_path_uses_context_manager():
+    """Verify that results_path file reads use context managers."""
+    module_path = os.path.join(
+        os.path.dirname(__file__),
+        "..",
+        "app",
+        "modules",
+        "code",
+        "code_projects_api.py",
+    )
+    with open(module_path, "r", encoding="utf-8") as f:
+        source = f.read()
+
+    context_reads = len(re.findall(r"with open\(results_path", source))
+    assert context_reads >= 3, (
+        f"Expected at least 3 context-managed opens of results_path, found {context_reads}"
+    )