Patch 1.15.1 . DeepSeek token pattern improvement.

[babenek]

Description

Please include a summary of the change and which is fixed.

• DeepSeek token pattern improvement.
• Version up to v1.15.1

How has this been tested?

Please describe the tests that you ran to verify your changes.

• UnitTest
• Benchmark

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.29%. Comparing base (c3a38c4) to head (2d70a0b).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #821   +/-   ##
=======================================
  Coverage   92.29%   92.29%           
=======================================
  Files         145      145           
  Lines        5905     5905           
  Branches      967      967           
=======================================
  Hits         5450     5450           
  Misses        294      294           
  Partials      161      161           

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[xDizzix]