#61 docs: record SER 5.0.1 release

Summary

• Adds the SER 5.0.1 changelog entry: the root entrypoint no longer imports node:fs/promises at the top level, so vite dev loads the client runtime again.

Runtime change: artisanstreet/svelte-effect-runtime#128

🤖 Generated with Claude Code

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Summary by cubic

Adds the SER 5.0.1 changelog entry documenting the fix that lets development builds load in the browser again.

In 5.0.0, the root entrypoint of svelte-effect-runtime imported node:fs/promises at the top level, which made vite dev fail because the package is served to the browser as unbundled modules. The compiler now loads node:fs/promises only when the Vite plugin needs it. Production builds were not affected.