fix: bound chat latency and clarify blackjack flow

CHANGELOG.md

@@ -1,5 +1,23 @@
 # Changelog
 
+## alpha 0.6.2.1015
+
+- Bound direct DeepSeek SSE reads to 30 seconds of total wall time in addition
+  to the existing 18-second socket inactivity timeout.
+- Stop reading as soon as the SSE `[DONE]` marker arrives instead of waiting
+  for the upstream connection to close.
+- Prevent a trickling or unfinished upstream response from occupying both
+  generation workers for about 15 minutes and delaying later final replies.
+- Preserve fast ACK delivery, three-attempt retry behavior, two generation
+  workers, and strict final-reply ordering.
+- Treat `/21点 开始 100` as a 100-coin stake and accept OCR forms with missing
+  whitespace, such as `/21点开始100` and `/blackjackstart100`.
+- Keep blackjack play as explicit steps: start and deal first, then hit or
+  stand in a separate command. Combined forms return this workflow without
+  opening a game or deducting funds.
+- Prefix blackjack hands, status and settlement replies with the current
+  group-scoped player's configured display label, such as `jacky：...`.
+
 ## alpha 0.6.1.1015
 
 - Add three reviewed plugins: local context summaries for 100/200/300 messages,