Clarify AS-20M standalone audio-only card

README.md

@@ -78,15 +78,17 @@ triembed/checkpoints/mn20_native_lora_aistmix_audioheavy100k175k175k_continue_fr
 
 ## Local Gate Metrics
 
-The checkpoint-local heldout gate reported:
+The checkpoint-local heldout gate reported audio-side consistency metrics:
 
 | Metric | Score |
 |---|---:|
 | audio cosine | 0.8108 |
 | embedding Pearson | 0.7953 |
 | similarity Pearson | 0.8853 |
-| audio-to-text R@1, 1280d | 0.3216 |
-| text-to-audio R@1, 1280d | 0.3028 |
+
+Internal training runs also tracked text-audio retrieval against a companion
+text embedding space. Those numbers are not reported here as standalone model
+capabilities because this release artifact does not include a text encoder.
 
 ## MAEB Audio-Only Comparison
 
@@ -139,7 +141,7 @@ Artifacts:
 
 ## Limitations
 
-`AS-20M` is an embedding model only. It does not transcribe speech,
-classify audio events directly, or include a text encoder in this standalone
-release artifact. Text-audio retrieval evaluations use a separate compatible
-text encoder/head to score cross-modal alignment.
+`AS-20M` is an audio embedding model only. It does not transcribe speech,
+classify audio events directly, or embed text. Text-audio retrieval requires
+a separate compatible text encoder/head that is not included in this release
+artifact.