* Add Mihomo Control plugin
Monitor and control a Mihomo (Clash Meta) external controller from the
bar: live traffic graph, proxy mode, proxy-group management with latency
tests, and core restart. Works locally (127.0.0.1) or remotely via
host/port/secret settings.
* Add Chinese (Simplified) translation
* Add test-all latency button
Adds a Test all button next to the Proxy groups heading that runs latency
tests on every group sequentially, with a single summary notification.
* Unify traffic and proxy groups section styles
Give both sections the same card look: muted medium-weight heading on the
left, secondary info on the right, and proxy-group cards restyled as
bordered sub-cards inside the section.
* Polish proxy group cards
Show the selected proxy next to the bold group name (ECS > ecs-proxy),
move the expand chevron to the type/members row where the list opens,
and drop the list glyph from the card header.
* Decouple heights of paired group cards
Keep each card in a two-column row at its natural height instead of
stretching the neighbor when one is expanded.
* Use thumbnail generator to generate thumbnail
* mihomo-control: theme-aware panel colors
Use theme roles for traffic and latency colors so they stay readable in
light mode, and keep the status chip's green/amber/red identity with
darker light-mode shades.
