Update v2 LiteRT duration and punctuation contract

litert/assets/g2p/normalization.json

@@ -36,5 +36,11 @@
       "length",
       "unicode_combining"
     ]
-  }
+  },
+  "punctuation_token_remap": {
+    "<ellipsis>": "<sil>",
+    "<end_exclaim>": "<sil>",
+    "<end_question>": "<sil>"
+  },
+  "punctuation_token_remap_scope": "continuation_only"
 }

litert/litert/duration_predictor.tflite

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:eafb691ab4daea4cc578c2ca635d53390d667dd837296c40c08691c495246bfd
+oid sha256:9714f1588286a84810c118242f0c3a4a2fa5486fb122fb7c50811c105c21b9f9
 size 8253652

litert/manifest.json

@@ -623,6 +623,21 @@
       "calibrated_floors": false,
       "floor_table_ms": {}
     },
+    "word_boundaries": {
+      "enabled": true,
+      "schema": "scyllasband_word_boundary_runtime_v1",
+      "g2p_output_symbol": " ",
+      "duration_phone": "<sil>",
+      "presence_threshold_frames": 0.5,
+      "projection_schema": "scyllasband_word_boundary_candidates_v1",
+      "projection_source": "frozen_mfa_word_intervals",
+      "training_objective": {
+        "presence_loss_weight": 0.25,
+        "positive_duration_loss_weight": 1.0,
+        "positive_class_weight": 5.0,
+        "presence_logit_scale": 4.0
+      }
+    },
     "text_normalizer": {
       "version": "scyllasband_spoken_text_v2_2026_08_05",
       "sha256": "d8fd1b2415d0d100d1c70237a4469117ee6b73d0e4da703e4654c83192779cc4",