fix(recall): harden frontmatter parsing and stdin validation

- Catch UnicodeDecodeError in _parse_frontmatter_only
- Reject files missing closing --- delimiter
- Validate stdin JSON is a dict before accessing keys
- Add e2e marker to manifest retrieval tests

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: visahak

platform-integrations/claude/plugins/evolve-lite/lib/entity_io.py

@@ -248,11 +248,16 @@ def _parse_frontmatter_only(path):
                 return {}
 
             frontmatter_lines = []
+            found_closing = False
             for line in handle:
                 if line.strip() == "---":
+                    found_closing = True
                     break
                 frontmatter_lines.append(line)
-    except OSError:
+    except (OSError, UnicodeDecodeError):
+        return {}
+
+    if not found_closing:
         return {}
 
     return _parse_frontmatter_lines(frontmatter_lines)

platform-integrations/claude/plugins/evolve-lite/skills/recall/scripts/retrieve_entities.py

@@ -41,11 +41,15 @@ def format_entities(entities):
 def main():
     try:
         input_data = json.load(sys.stdin)
-        log(f"Input keys: {list(input_data.keys())}")
     except json.JSONDecodeError as e:
         log(f"Failed to parse JSON input: {e}")
         return
 
+    if not isinstance(input_data, dict):
+        log(f"Expected JSON object, got {type(input_data).__name__}")
+        return
+
+    log(f"Input keys: {list(input_data.keys())}")
     prompt = input_data.get("prompt", "")
     if prompt:
         log(f"Prompt preview: {prompt[:120]}")

tests/platform_integrations/test_claude_retrieve_manifest.py

@@ -8,7 +8,7 @@
 
 import pytest
 
-pytestmark = pytest.mark.platform_integrations
+pytestmark = [pytest.mark.platform_integrations, pytest.mark.e2e]
 
 _REPO_ROOT = Path(__file__).parent.parent.parent
 CLAUDE_RETRIEVE_SCRIPT = _REPO_ROOT / "platform-integrations/claude/plugins/evolve-lite/skills/recall/scripts/retrieve_entities.py"

tests/platform_integrations/test_codex_retrieve_manifest.py

@@ -8,7 +8,7 @@
 
 import pytest
 
-pytestmark = pytest.mark.platform_integrations
+pytestmark = [pytest.mark.platform_integrations, pytest.mark.e2e]
 
 _REPO_ROOT = Path(__file__).parent.parent.parent
 CODEX_RETRIEVE_SCRIPT = _REPO_ROOT / "platform-integrations/codex/plugins/evolve-lite/skills/recall/scripts/retrieve_entities.py"