* fix(comment): don't inherit parent @mentions when parent author is an agent
When an agent posts a comment that @mentions another agent (typically a
one-shot delegation, e.g. a PR-completion comment that asks a reviewer
agent to review), member follow-up replies in the same thread were
auto-inheriting that mention and re-triggering the reviewer on every
plain question. Same root cause: the inheritance branch only required
the reply to have no mentions, not that the parent was member-authored.
Tighten the guard: only inherit when the parent (thread root) is
authored by a member. Member-rooted threads still inherit so a member
who started by @mentioning an agent can keep replying without re-typing.
Agent-authored roots are treated as one-shot — explicit @mentions in
later comments still trigger normally.
Extracted the decision into shouldInheritParentMentions for direct unit
testing, and added an end-to-end regression
(TestMemberReplyToAgentRootDoesNotInheritParentMentions) that reproduces
MUL-1535: J posts a PR completion @mentioning Reviewer; a member's
plain follow-up must not re-enqueue Reviewer.
* chore(comment): gofmt trigger_test.go
9ccaf18479