The shortcuts wrote the Plasma 5 value format and so never bound anything,
which is what produced "No default shortcuts" in System Settings.
kglobalacceld's KServiceActionComponent::loadSettings reads the services
_launch key as a bare key sequence and hands it straight to
QKeySequence::fromString. Plasma 5 stored a "keys,default,name" triplet
there and Plasma 6 does not, so "Meta+Alt+T,none,Insta360: Toggle AI
tracking" parsed to an empty sequence and bound no key. The value is now
just the key sequence; alternates would be tab-separated and "none" means
unbound.
Two supporting changes. The desktop entries now carry X-KDE-Shortcuts,
which is where kglobalacceld reads an entry's default shortcut from, so the
binding shows up in System Settings as a default instead of as nothing.
And they are no longer NoDisplay by default: KApplicationTrader skips
NoDisplay services, so hiding them from the launcher also hid them from the
Shortcuts page, which is the opposite of helpful. HIDE_FROM_MENU=1 restores
the old behaviour.
--list is now a diagnostic rather than a bare dump: it reports the
registered key, the default from the desktop entry, whether the entry file
exists, and flags any comma-bearing value as the unparseable Plasma 5 form.
It would have identified this fault directly.
The new plasmoid is a Plasma 6 applet: a velocity-style virtual joystick
plus zoom slider and Home/Center/Tracking buttons. It drives the gimbal
with relative moves, not absolute ones, because linkctl status reports no
pan or tilt while the camera is idle, leaving no trustworthy position to aim
from; relative steps work in either state and cannot drift, and linkctl
clamps them to the device range. The pure logic lives in a .js library so it
is testable outside Plasma.
Tested: 36 new node checks over shell quoting, tick command construction,
inversion, the per-axis threshold and the multi-object JSON merge, each
confirmed meaningful by mutation. Reproduced the broken shortcut state in a
throwaway HOME and verified --list flags it and reinstalling repairs it. All
QML passes qmllint with no syntax errors (KDE modules are unresolvable
offline). shellcheck clean. The applet has not been loaded in a real Plasma
session.
brad
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