feat: add Mattermost channel integration#877

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Aaronontheweb wants to merge 6 commits intodevfrom

feat/mattermost-channel

Commits on May 6, 2026

feat: add Mattermost channel integration with Testcontainers integration tests
Aaronontheweb
committed
fix: address code review findings in Mattermost channel implementation
Aaronontheweb
committed
feat: add interactive button-based approval prompts for Mattermost channel
Aaronontheweb
committed
fix: harden Mattermost channel for production readiness
Aaronontheweb
committed
fix: correct approval labels and clean up Mattermost channel code
Aaronontheweb
committed
Merge branch 'dev' into feat/mattermost-channel
Aaronontheweb
authored