feat: improve type annotations in RequestError methods #17
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Changes dict to dict[str, Any] in RequestError static factory methods to provide more precise type hints
Motivation
The kimi-cli project uses this library and has enabled Pyright strict type checking. The current dict annotations in RequestError methods trigger type warnings:
Changes
Updated the following methods in exceptions.py:
parse_error()
invalid_request()
invalid_params()
internal_error()
auth_required()
Benefits
✅ Passes strict type checking (Pyright, mypy)
✅ Correct JSON-RPC 2.0 semantics (JSON objects use string keys)
✅ Better IDE autocomplete and error detection