fix(audio): harden realtime callback paths

crates/chanora_audio/src/debug_wav.rs

@@ -314,6 +314,15 @@ mod tests {
         rec.stop();
     }
 
+    #[test]
+    fn ios_raw_debug_wav_does_not_push_from_realtime_callback() {
+        let src = include_str!("ios_raw_unit.rs");
+        assert!(
+            !src.contains("push_raw_mic") && !src.contains("push_processed_mic"),
+            "ios raw callbacks must not call WavDebugRecorder push_*_mic until it has a preallocated handoff"
+        );
+    }
+
     #[test]
     fn wav_header_is_44_bytes() {
         // Write to a temp file to test the header.