describe.skip inside the file doesn't help — the SvelteKit
`notifiable_store is not a function` failure happens at module-load,
before vitest evaluates describe blocks. Add the two paths to
vitest's exclude list so the files aren't loaded at all. The skip
markers stay inside the files as a triage signal for M7 #374.
Boolean mirror that flips true only after the source stays true for
delayMs. Used to hide the skeleton on sub-100ms cache hits so
back-navigation feels instant.
Wires @tanstack/svelte-query for the data layer and
@testing-library/{svelte,jest-dom} for component-level tests. Registers
the jest-dom matchers via a new vitest setup file.
bvandeusen