Fix VAD+ASR C++ example. (#2335)

It was not able to handle short audios., e.g., 2.1 seconds.

sherpa-onnx/csrc/sherpa-onnx-vad-with-offline-asr.cc

@@ -186,13 +186,15 @@ for a list of pre-trained models to download.
   fprintf(stderr, "Started!\n");
   int32_t window_size = vad_config.silero_vad.window_size;
   int32_t i = 0;
-  while (i + window_size < samples.size()) {
-    vad->AcceptWaveform(samples.data() + i, window_size);
-    i += window_size;
-    if (i >= samples.size()) {
+  while (i < samples.size()) {
+    if (i + window_size <= samples.size()) {
+      vad->AcceptWaveform(samples.data() + i, window_size);
+    } else {
       vad->Flush();
     }
 
+    i += window_size;
+
     while (!vad->Empty()) {
       const auto &segment = vad->Front();
       float duration = segment.samples.size() / 16000.;

sherpa-onnx/kotlin-api/OnlineRecognizer.kt

@@ -395,6 +395,36 @@ fun getModelConfig(type: Int): OnlineModelConfig? {
             )
         }
 
+        17 -> {
+            val modelDir = "sherpa-onnx-streaming-zipformer-ctc-zh-int8-2025-06-30"
+            return OnlineModelConfig(
+                zipformer2Ctc = OnlineZipformer2CtcModelConfig(
+                    model = "$modelDir/model.int8.onnx",
+                ),
+                tokens = "$modelDir/tokens.txt",
+            )
+        }
+
+        18 -> {
+            val modelDir = "sherpa-onnx-streaming-zipformer-ctc-zh-2025-06-30"
+            return OnlineModelConfig(
+                zipformer2Ctc = OnlineZipformer2CtcModelConfig(
+                    model = "$modelDir/model.onnx",
+                ),
+                tokens = "$modelDir/tokens.txt",
+            )
+        }
+
+        19 -> {
+            val modelDir = "sherpa-onnx-streaming-zipformer-ctc-zh-fp16-2025-06-30"
+            return OnlineModelConfig(
+                zipformer2Ctc = OnlineZipformer2CtcModelConfig(
+                    model = "$modelDir/model.fp16.onnx",
+                ),
+                tokens = "$modelDir/tokens.txt",
+            )
+        }
+
         1000 -> {
             val modelDir = "sherpa-onnx-rk3588-streaming-zipformer-bilingual-zh-en-2023-02-20"
             return OnlineModelConfig(