### artifact_guard
Check required project artifacts (5 DB + 10 repo). Returns present/missing counts and lists.

Use this exact Agent Zero tool-call shape:
```json
{"tool_name":"artifact_guard","tool_args":{"project_name":"my_project"}}
```

Optional args:
- `project_root` (str): repo root path for file-based artifact checks
- `format` (str): "summary" (default) or "json"

Rules:
- Do not use this tool to discover, read, infer, validate, or print credential values.
- If the tool is not found, stop and report a runtime tool-registration failure. Do not switch to WebUI login, CSRF, HTTP cache-refresh, shell credential scans, or `.env`/config/log searches.