OnboardingStepPanel previously forwarded ~50 props to seven step
components, so adding a single wizard field meant touching four layers.
Introduce a renderer-local React Context (OnboardingProvider /
useOnboarding) that carries all wizard state and actions (connectors,
node status, company inputs, model selection, execution mode, mission,
launch summary, locale, t, error/loading). Step panels now receive only
their navigation callbacks (onContinue / onBack / onLaunch / onFinish)
and read everything else via useOnboarding(). CompanyOnboarding wraps
the step panel tree in OnboardingProvider with a memoised value.
Business logic is unchanged: each onContinueFrom* transition, the
bootstrap call, and the welcome-step branch remain exactly as before;
this refactor only moves the data-passing mechanism.
ZacharyZhang-NY
de77f5f38e