Problem

The THINKING_TAG_RE and THINKING_BLOCK_RE regex patterns in extensions/matrix/src/matrix/monitor/replies.ts are missing the mm: namespace prefix for detecting MiniMax reasoning tags.

Context

PR #93767 fixed the core reasoning-tags.ts, and PRs #93806/#93820 fixed additional missed locations (silent-reply, streaming, iMessage paths). However, the Matrix monitor's replies.ts was also missed.

The regex currently matches antml: namespaced tags but not mm: namespaced tags:

const THINKING_TAG_RE = /<\s*\/?\s*(?:think(?:ing)?|thought|antthinking)\b[^<>]*>/gi;
//                                     ^^^ missing (?:antml:|mm:)?

Impact

MiniMax model mm:think reasoning content is not recognized as reasoning-only by shouldSuppressReasoningReplyText(), causing raw reasoning tags to leak into Matrix room messages.

Fix

Add (?:antml:|mm:)? prefix to think(?:ing)? and thought in both THINKING_TAG_RE and THINKING_BLOCK_RE, consistent with the pattern applied in the 6 already-fixed files.