Previously the AbortController was created inside useEffect, which runs
after render. This meant requests initiated during render received
the previous cycle's (possibly aborted) signal and were cancelled
immediately instead of completing.
Now the controller is created synchronously when pathname changes, before
any request can be initiated on the new route. The old controller is
aborted in the same conditional block, before the new one is created.
Side effect: removed resolved Issue #49 from Tasks.md.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Lukas
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