fix: replace 3 remaining silent except:pass with debug logging

- kev.py: cache read failure now logged
- owasp_tools.py: glossary FTS search + publication FTS search failures now logged
- 5 rounds of verification: all clean. 270/270 tests pass.

Author: zer0-kr

src/security_framework_mcp/kev.py

@@ -29,8 +29,8 @@ async def _ensure_catalog(self) -> dict:
                 self._catalog = json.loads(self._cache_path.read_text())
                 self._last_load = now
                 return self._catalog
-            except (json.JSONDecodeError, OSError):
-                pass
+            except (json.JSONDecodeError, OSError) as exc:
+                log.debug("KEV cache read failed, will re-fetch: %s", exc)
 
         try:
             async with httpx.AsyncClient(follow_redirects=True) as client:

src/security_framework_mcp/tools/owasp_tools.py

@@ -1156,8 +1156,8 @@ async def get_nist_glossary(
                     for row in results:
                         lines.append(f"### {row['term']}\n{row['definition']}\n_Source: {row.get('source', 'N/A')}_\n")
                     return "\n".join(lines)
-            except Exception:
-                pass
+            except Exception as exc:
+                log.debug("Glossary FTS search failed: %s", exc)
             return f"Term '{term}' not found. Use get_nist_glossary() to list all terms."
 
         return f"# {record['term']}\n\n{record['definition']}\n\n_Source: {record.get('source', 'N/A')}_"
@@ -1182,8 +1182,8 @@ async def get_nist_publication(
                         for r in results:
                             lines.append(f"- **{r['id']}** — {r['title']}")
                         return "\n".join(lines)
-                except Exception:
-                    pass
+                except Exception as exc:
+                    log.debug("Publication FTS search failed: %s", exc)
                 return f"Publication '{id}' not found."
             lines = [
                 f"# {record['id']} — {record['title']}",