# Message Templates
Connector and notification templates are still configured from `mr-milchick.toml`.
## Supported Template Fields
```toml
[templates.gitlab]
summary = "..."
[templates.github]
summary = "..."
[templates.slack_app]
first_root = "..."
first_thread = "..."
update_root = "..."
update_thread = "..."
[templates.slack_workflow]
first_title = "..."
first_thread = "..."
update_title = "..."
update_thread = "..."
```
Missing fields keep the built-in defaults.
## Placeholders
Templates still use `{{placeholder}}` interpolation only.
Common placeholders include:
- `mr_number`, `mr_ref`, `mr_title`, `mr_url`, `mr_author_username`
- `source_branch`, `target_branch`, `changed_file_count`
- `findings_block`, `actions_block`
- `pipeline_status_block`, `pipeline_status_count`
- `pipeline_status_passed_count`, `pipeline_status_failed_count`, `pipeline_status_unknown_count`
- `summary_title`, `summary_intro`, `summary_footer`
- `notification_title`, `notification_subject`
- `reviewers_line`, `mr_ref_link`
Invalid placeholders warn and fall back to the built-in field template.
## Optional Pipeline Status Block
If `[notifications.pipeline_status]` is enabled, Milchick can enrich Slack notifications with status lines built from `*/milchick-status/*.json` files that already exist in the workspace.
This is optional and mainly useful for internal CI setups where earlier jobs emit compact JSON summaries for later pipeline stages.
The main placeholders are:
- `pipeline_status_block`
- `pipeline_status_count`
- `pipeline_status_passed_count`
- `pipeline_status_failed_count`
- `pipeline_status_unknown_count`
The built-in Slack templates already include `{{pipeline_status_block}}`. If no status files are found, the placeholder renders as an empty string.
## Slack Mention Rewriting
Slack mention rewriting now comes from TOML:
```toml
[notifications.slack_app.user_map]
"principal-reviewer" = "U01234567"
"alice" = "U07654321"
```
That mapping is applied by the Slack app sink when it rewrites `@username` into Slack user mentions.
For the full config schema, see [config-reference.md](config-reference.md).