Inngest v3 to v4 Migration Use this skill when the user asks to upgrade Inngest, fix v3/v4 errors, migrate realtime, or clean up a codebase that has mixed SDK patterns. Primary reference: https://www.inngest.com/docs/reference/typescript/v4/migrations/v3-to-v4 This skill is agent-first: detect actual usage first, make mechanical API changes in a controlled order, then typecheck and run focused tests. When to Trigger Use this skill for requests like: - "Upgrade Inngest from v3 to v4" - "Fix our Inngest v4 migration" - "We're getting signing key required / cloud mode errors after upgrading" - "…