YueGuobin 7e8c515a3c
api: expose installed netmiko device types for the web UI
New GET /v3/netmiko/device_types endpoint returns the device types
supported by the netmiko library installed on the server, including
the gns3-copilot custom drivers, so the web UI can populate the
netmiko_device_type dropdown on templates and nodes.

The list is read at runtime from netmiko's ssh_dispatcher.CLASS_MAPPER
registry (the same table ConnectHandler dispatches on), filtered to
drop the '_ssh' aliases and the 'autodetect' pseudo type, and cached
for the process lifetime. Returns 501 when netmiko is not installed
(ai-features extra).
2026-08-21 21:41:42 +08:00
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