### next_step
Add, list, update or complete DB-backed next steps for a project.

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

Actions:
- `list` (default): List pending next steps
- `add`: Add a new next step (requires `next_step` text)
- `update`: Update an existing step (requires `step_id` and `next_step`)
- `complete`: Mark a step as complete (requires `step_id`)

Example (add):
```json
{"tool_name":"next_step","tool_args":{"action":"add","project_name":"my_project","next_step":"Implement authentication module"}}
```

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.