The current Mattermost extractor is stdlib-only and does not require installing requests. It also supports readable channel names in .env, not only channel IDs.

If you still want to override it with another script, expose that to OpenCode with:

FIDELITY_MATTERMOST_SYNC_CMD

Example:

export FIDELITY_MATTERMOST_SYNC_CMD="/absolute/path/to/your-mattermost-sync-script"

Expected behavior:

print the latest relevant Mattermost context to stdout
avoid interactive prompts
return a non-zero exit code on failure

OpenCode can then use that output to refresh ai/inbox/mattermost-latest.md proactively.

Historical Slack exports can also be imported through:

python3 scripts/slack/import_slack_export.py ...
/slack-import ...

Recommended raw archive location:

archives/slack/export/

The importer can auto-detect fidelity* channels and auto-tune message selection for very large exports.

The Mattermost extractor can also fetch the latest prior day with channel activity for standups. It starts from the previous calendar day and expands backward automatically when there is no activity, which covers Mondays, weekends, holidays, and OOO gaps.

bash scripts/mattermost/sync.sh --previous-workday