Add debug st.info before st.plotly_chart to diagnose invisible chart

src/validators/mindmodel_validator.py

@@ -106,10 +106,19 @@ def validate_manifest(manifest_path: str, report_only: bool = True) -> dict:
     files = manifest.get("files") or []
     report = {"missing_files": [], "truncated_evidence": [], "potential_secrets": []}
 
+    def _strip_surrounding_quotes(s: str) -> str:
+        s = s.strip()
+        if len(s) >= 2 and s[0] == s[-1] and s[0] in ('"', "'"):
+            return s[1:-1]
+        return s
+
     for raw in files:
         entry = _normalize_entry(raw)
         path = entry.get("path")
         evidence = entry.get("evidence_excerpt") or entry.get("evidence") or ""
+        # Remove surrounding quotes if the fallback YAML parser left them in place
+        if isinstance(evidence, str):
+            evidence = _strip_surrounding_quotes(evidence)
 
         # missing files
         if path: