fix(client): remove automatic Request.make usage

[patroza]

Why

Remove implicit use of request constructors at the client boundary.

What changed

• Stop invoking Request.make(...) in API client runtime calls for both effect and stream requests.
• Derive handler input types from request schema metadata instead of the make function signature.
• Keep no-input handling based on request fields (_tag-free)
  while making command-type utilities consume schema-based input typing.

Validation

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