add changeset

Author: edmundhung

.changeset/brave-planes-dance.md

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+"miniflare": patch
+---
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+refactor: centralize internal `/cdn-cgi/` paths and move platform proxy endpoint
+
+Internal Miniflare endpoints now use a centralized `CorePaths` constant. The `getPlatformProxy` magic proxy has been moved from the root URL to `/cdn-cgi/platform-proxy`, a reserved path in the Cloudflare Network.