Merge origin/main into dev/vllm-align; resolve omni_stage.py conflicts

Co-authored-by: Cursor <cursoragent@cursor.com>

Signed-off-by: tzhouam <tzhouam@connect.ust.hk>

vllm_omni/model_executor/models/qwen3_tts/tokenizer_12hz/modeling_qwen3_tts_tokenizer_v2.py

@@ -197,12 +197,13 @@ class Qwen3TTSTokenizerV2CausalTransConvNet(nn.Module):
         self.conv = nn.ConvTranspose1d(in_channels, out_channels, kernel_size, stride=stride)
 
         pad = kernel_size - stride
-        self.left_pad = math.ceil(pad)
-        self.right_pad = pad = self.left_pad
+        self.left_pad = 0
+        self.right_pad = int(pad)
 
     def forward(self, hidden_state):
         hidden_state = self.conv(hidden_state)
-        hidden_state = hidden_state[..., self.left_pad : hidden_state.shape[-1] - self.right_pad]
+        if self.right_pad > 0:
+            hidden_state = hidden_state[..., : hidden_state.shape[-1] - self.right_pad]
         return hidden_state.contiguous()