Fixes #2116 Strict server handlers unconditionally decoded the request body, causing an EOF error when no body was sent for operations with optional request bodies (requestBody.required defaults to false in OpenAPI 3.0). For optional JSON bodies, the generated handlers now treat io.EOF from the decoder as "no body provided" and leave request.Body as nil rather than returning an error. For optional text bodies, an empty read is similarly treated as absent. Required bodies retain the original unconditional error handling. All five strict server templates are updated: stdhttp (used by chi and gorilla), echo, gin, fiber, and iris. Two new test operations (RequiredJSONBody, RequiredTextBody) with required: true are added to the strict server test schema to verify both code paths are generated correctly. Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>