fix(core): add wildcard arm to InjectionVerdict matches for non_exhaustive compat

Author: bug-ops

crates/zeph-core/src/agent/mod.rs

@@ -2043,6 +2043,7 @@ impl<C: Channel> Agent<C> {
                     tracing::warn!("injection_classifier soft_signal on user input");
                 }
                 zeph_sanitizer::InjectionVerdict::Clean => {}
+                _ => {}
             }
         }
         #[cfg(feature = "classifiers")]

crates/zeph-core/src/agent/tool_execution/sanitize.rs

@@ -229,6 +229,7 @@ impl<C: Channel> Agent<C> {
                     self.update_metrics(|m| m.classifier_tool_suspicious += 1);
                 }
                 zeph_sanitizer::InjectionVerdict::Clean => {}
+                _ => {}
             }
         }
         None