`vlan <id> mgmt` existed on the CLI, but nothing reported which VLAN
currently carries management, so the setting was invisible from the web UI -
the only way to find out was to read the startup config.
Report it in information.json and offer it where the other switch-wide
addressing settings live, between Gateway and Language, as a picker filled
from the configured VLANs. When management is untagged there is no VLAN to
select, so that state shows as a disabled entry rather than inventing an id
the switch would reject.
Confirm before applying, and say what will happen rather than echoing the
action back: the switch starts tagging its own frames, and if the port you
came in on does not carry that VLAN the page becomes unreachable and the way
back is the console. Cancelling puts the picker back where it was.
machine.machine_name is already reported in /information.json as hw_ver;
surface it read-only on the System Settings page so the exact build
target is visible in the UI, without adding a redundant JSON field.
Add a device hostname settable from the CLI (`hostname <text>`) and the
System Settings page. The value is sanitized on ingest to JSON-safe
printable ASCII (<=23 chars), stored in a shared __xdata buffer, seeded
to "RTLPlayground" at boot, persisted through the startup-config, and
reported in /information.json. It lives in the common header so other
modules can advertise it (LLDP uses it as the System Name TLV).
Add a language selector to the System Settings page supporting English,
Japanese, and Chinese. The i18n dictionary already contained zh
translations but lacked the UI to switch languages.
Changes:
- html/i18n.js: add sys_language key to en/ja/zh
- html/system.html: add language selector dropdown
- html/system.js: add changeLang() and selector initialization
- tools/httpd_sim.c: fix cookie parsing for multi-cookie headers;
fix Set-Cookie response (missing Path=/, missing \r\n\r\n);
add SO_REUSEADDR for faster port reuse