Remove Fastify as a hard dependency from core #910

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Remove Fastify as a hard dependency from core#910

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area:buildBuild system, bundling, npm publishBuild system, bundling, npm publishenhancementNew feature or requestNew feature or requestfrom-jiraMigrated or originated from a Jira ticketMigrated or originated from a Jira ticket

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kriszyp

opened on Jun 1, 2026

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Decouple Harper core from Fastify so the HTTP layer is pluggable. Fastify-specific functionality should move to a separate component (see CORE-2383).

🤖 Filed by Claude on behalf of Kris.

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1. kriszyp

   self-assigned this

   on Jun 1, 2026
2. kriszyp

   added

   enhancementNew feature or requestNew feature or request

   from-jiraMigrated or originated from a Jira ticketMigrated or originated from a Jira ticket

   area:buildBuild system, bundling, npm publishBuild system, bundling, npm publish

   on Jun 1, 2026
3. kriszyp

   added a parent issue on Jul 7, 2026

   • [Epic] Runtime portability & dependency slimming (incl. Bun) #1679
4. kriszyp

   set

   Priority

   to

   P2

   on Aug 4, 2026

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