Update app.py

app.py

@@ -102,7 +102,7 @@ async def tts(ws: WebSocket):
         ids, attn = build_prompt(text, voice)
         past      = None
         offset_len = ids.size(1)
-        cache_pos  = offset_len - 1        # 0‑basiert
+        cache_pos  = offset_len        # 0‑basiert
         last_tok   = None
         buf        = []