fix: skip cross-origin requests in Service Worker#333
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Add URL guard so cross-origin requests (api.github.com/graphql) bypass the SW entirely, preventing CORS errors caused by the SW re-issuing CORS fetches. Also handle cache-miss gracefully with a 503 fallback response. Resolves #332
On mousedown on one side, set the opposite side's elements to user-select: none. The protection persists until the next mousedown (which clears it), preventing the browser from extending the selection across sides after mouseup.
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Add URL guard so cross-origin requests (api.github.com/graphql)
bypass the SW entirely, preventing CORS errors caused by the SW
re-issuing CORS fetches. Also handle cache-miss gracefully with a
503 fallback response.
Resolves #332