Three field-level alignments in normalizeClaudeOAuthRequestBody to
match real Claude Code CLI traffic byte-for-byte:
1. temperature: previously deleted unconditionally; now passes
through client value, defaults to 1 when absent (real CLI
always sends temperature, default 1).
2. max_tokens: defaults to 128000 when absent (real CLI default).
3. context_management: when thinking.type is enabled/adaptive
and the client did not provide context_management, inject
{"edits":[{"type":"clear_thinking_20251015","keep":"all"}]}
to mirror real CLI behavior.
tool_choice removal is unchanged (Claude Code OAuth credentials
do not allow client-supplied tool_choice).
Tests updated:
- gateway_body_order_test.go: temperature/max_tokens are now
expected in output; tool_choice still removed.
- gateway_prompt_test.go: system array is now 2 blocks
(billing + cc prompt), assertions adjusted.
- gateway_anthropic_apikey_passthrough_test.go: same 2-block
assertion.
