fix(release): asset names ara-diac-small-2.0-{fp32,int8}.zip + int8 index entry

The resilient publish flow's temp filenames leaked into asset names;
renamed the release assets and the fp32 URLs, and restored the per-
precision int8 entry (the second publish replaced the first's block).

Author: Ronald Tse

models.yaml

@@ -234,12 +234,25 @@ models:
     task: diacritization
     scripts: [Arab, Arab]
     precision: fp32
-    filename: clean-fp32.zip
-    url: https://github.com/interscript/interscript-ml/releases/download/ara-diac-small-2.0/clean-fp32.zip
+    filename: ara-diac-small-2.0-fp32.zip
+    url: https://github.com/interscript/interscript-ml/releases/download/ara-diac-small-2.0/ara-diac-small-2.0-fp32.zip
     sha256: d9aa95d0e8fd0d7da80fd2f7dabedf0ac65f55ba984de565d252f5e14906d98c
     size: 1418516306
     metrics:
       - {name: der_teacher_fullset, value: 2.289, source: interscript/interscript-ml docs/RESULTS.md#run-006-r7-muon}
       - {name: der_student_fullset, value: 4.8218, source: interscript/interscript-ml docs/RESULTS.md#run-006-r7-muon}
     parity: {samples: 600, cer_delta: 0.1187}
     license: BSD-3-Clause
+  ara-diac-small-2.0-int8:
+    task: diacritization
+    scripts: [Arab, Arab]
+    precision: int8
+    filename: ara-diac-small-2.0-int8.zip
+    url: https://github.com/interscript/interscript-ml/releases/download/ara-diac-small-2.0/ara-diac-small-2.0-int8.zip
+    sha256: f4d07acdaf9c18cded97e15e0c5636e6cee90de2fa32c5a373a44c0cc912bf50
+    size: 264043016
+    metrics:
+      - {name: der_teacher_fullset, value: 2.289, source: interscript/interscript-ml docs/RESULTS.md#run-006-r7-muon}
+      - {name: der_student_fullset, value: 4.8218, source: interscript/interscript-ml docs/RESULTS.md#run-006-r7-muon}
+    parity: {samples: 600, cer_delta: 0.1393}
+    license: BSD-3-Clause