fix(providers): redact the host context in CatalogLimitsRequest Debug

crates/tinyinference-llm/src/providers/overrides.rs

@@ -227,14 +227,23 @@ pub type CatalogListing<Ctx> =
 pub type CatalogLimitsFuture = BoxFuture<Option<DiscoveryRequest>>;
 
 /// Input to an async provider catalog limits resolver.
-#[derive(Debug)]
 pub struct CatalogLimitsRequest<Ctx> {
     /// Model whose supported limits are being discovered.
     pub model: String,
     /// Owned host context such as configuration and credential sources.
     pub context: Ctx,
 }
 
+impl<Ctx> std::fmt::Debug for CatalogLimitsRequest<Ctx> {
+    fn fmt(&self, formatter: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        formatter
+            .debug_struct("CatalogLimitsRequest")
+            .field("model", &self.model)
+            .field("context", &"<host context>")
+            .finish()
+    }
+}
+
 /// Builds the provider limit discovery request for a model, if supported.
 pub type CatalogLimits<Ctx> =
     Arc<dyn Fn(CatalogLimitsRequest<Ctx>) -> CatalogLimitsFuture + Send + Sync>;

crates/tinyinference-llm/tests/provider_overrides.rs

@@ -380,3 +380,17 @@ fn registered_chat_entry_exposes_all_provider_model_metadata() {
     assert_eq!(request.metadata["caller"], "retained");
     assert_eq!(request.metadata["reasoning_disabled"], true);
 }
+
+#[test]
+fn catalog_limits_request_debug_redacts_the_host_context() {
+    let request = CatalogLimitsRequest {
+        model: "gpt-test".to_string(),
+        context: "sk-live-secret",
+    };
+
+    let printed = format!("{request:?}");
+
+    assert!(printed.contains("gpt-test"), "{printed}");
+    assert!(printed.contains("<host context>"), "{printed}");
+    assert!(!printed.contains("sk-live-secret"), "{printed}");
+}