* fix(reasoning-tags): accept MiniMax mm: prefix in silent-detection and stream gates
PR #93767 added MiniMax `mm:`-namespaced reasoning-tag support across the
shared sanitizer and Telegram lane coordinator, but two production reasoning-tag
recognizers were missed and still only matched the `antml:` namespace:
- src/auto-reply/tokens.ts: `taggedReasoningPrefixRe` / `openReasoningPrefixRe`
drive `stripLeadingReasoningBlocks` and `isSilentReplyPayloadText`, which 14+
call sites use to detect NO_REPLY silent payloads. A `<mm:think>…</mm:think>NO_REPLY`
reply was not recognized as silent, leaking the wrapper into delivery.
- src/agents/embedded-agent-subscribe.handlers.messages.ts: `REASONING_TAG_RE`
gates `shouldRecomputeFullStream`. A `<mm:think>` streaming chunk failed the
test, so the visible stream was not recomputed and the hidden reasoning leaked.
Add the `mm:` alternative alongside `antml:` in all three regexes, matching the
exact `(?:antml:|mm:)?` form used by #93767. Identification-only change, no other
regex logic touched.
* test(agents): cover MiniMax reasoning regressions
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Co-authored-by: Vincent Koc <vincentkoc@ieee.org>
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