YueGuobin 06e1511773
feat: Jinja2 template support in device_config_send
- Add optional 'template' param with Jinja2 syntax
- Each device entry can use 'vars' dict instead of 'config_commands'
- Template rendered per device, merged with existing commands
- Rendering errors returned inline for AI self-correction
2026-06-14 00:27:13 +08:00
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