Fix type safety for header handling in server routing #32
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Replaces unsafe type casting of `req.headers` with a `convertHeaders` helper function that correctly handles `string[]` and `undefined` values, converting them to a standard Fetch API `Headers` object. * Adds `convertHeaders` utility to `src/utils/helpers/request.ts` * Updates `src/routing/server.ts` to use `convertHeaders` * Adds unit tests for header conversion logic in `tests/unit/request.helper.test.ts`
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Replaces unsafe type casting of
req.headerswith aconvertHeadershelper function that correctly handlesstring[]andundefinedvalues, converting them to a standard Fetch APIHeadersobject.convertHeadersutility tosrc/utils/helpers/request.tssrc/routing/server.tsto useconvertHeaderstests/unit/request.helper.test.ts