Summary

• Add official DeepSeek-V3.2 and DeepSeek-V4 chat encoders and template registration.
• Add DSML reasoning/tool parser integration for V3.2 function_calls and V4 tool_calls.
• Port official encoding fixtures and add LMDeploy integration coverage.

Validation

• Focused DeepSeek V3.2/V4 encoding tests passed.
• Parser regression suite passed, excluding GPT-OSS harmony-vocab tests.

Assistance

Assisted with Codex + GPT-5.5 xHigh Fast, reviewed manually