fix: disable MiniMax-M3 thinking via thinking_mode (fixes classifier 60s timeout)

src/adapter/convert_request.rs

@@ -35,13 +35,18 @@ pub fn convert_anthropic_to_openrouter(
         extra: serde_json::Map::new(),
     };
 
-    // Reasoning models (e.g. GLM-5.2) "think" before answering by default, which
-    // adds several seconds of latency. Claude Code's auto-mode safety classifier
-    // issues short, structured calls (signalled by stop_sequences) with a tight
-    // timeout — the thinking latency makes it time out ("model temporarily
-    // unavailable"). For those calls, disable native thinking. We emit every known
-    // convention because the actual provider behind the HF router (fireworks,
-    // together, zai-org, ...) honours a different one.
+    // Reasoning models (e.g. GLM-5.2, MiniMax-M3) "think" before answering by
+    // default, which adds several seconds of latency. Claude Code's auto-mode
+    // safety classifier issues short, structured calls (signalled by
+    // stop_sequences) with a tight timeout — the thinking latency makes it time
+    // out ("model temporarily unavailable"). For those calls, disable native
+    // thinking. We emit every known convention because the actual provider behind
+    // the HF router (fireworks, together, deepinfra, zai-org, ...) honours a
+    // different one. Note: MiniMax-M3's chat_template reads `thinking_mode`
+    // (string: enabled/disabled/adaptive, default adaptive), NOT `enable_thinking`
+    // (bool) — so `chat_template_kwargs` must carry `thinking_mode: "disabled"`,
+    // verified against DeepInfra (the `enable_thinking`-only form is a no-op there
+    // and reasoning_content still streams).
     if !src.stop_sequences.is_empty() {
         use serde_json::{json, Value};
         dst.extra
@@ -50,7 +55,7 @@ pub fn convert_anthropic_to_openrouter(
             .insert("thinking".to_string(), json!({ "type": "disabled" }));
         dst.extra.insert(
             "chat_template_kwargs".to_string(),
-            json!({ "enable_thinking": false }),
+            json!({ "enable_thinking": false, "thinking_mode": "disabled" }),
         );
     }
 
@@ -470,6 +475,13 @@ mod tests {
         );
         assert!(result.extra.contains_key("thinking"));
         assert!(result.extra.contains_key("chat_template_kwargs"));
+        // MiniMax-M3's chat_template reads `thinking_mode` (string), not
+        // `enable_thinking` (bool) — without this, reasoning stays on and the
+        // non-stream classifier call times out on DeepInfra.
+        assert_eq!(
+            result.extra.get("chat_template_kwargs").and_then(|v| v.get("thinking_mode")),
+            Some(&serde_json::Value::String("disabled".to_string()))
+        );
     }
 
     #[test]