The function was defined on a feature branch, referenced by manager.go
and slack_test.go, but never made it to main after the rebase. This
caused go build to fail with 'undefined: FetchChannelHistory', which
Docker masked by using a cached binary from the last successful build.
That cached binary had neither the mrkdwn blocks nor the Level 3
context injection — explaining why Slack messages showed raw markdown
despite the source having the converter.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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