chat : implement minicpm5 parser (#24889)
* Add minicpm5 tool call parser
* Refactor MiniCPM5 PEG parser per review feedback
* Fix jinja min/max API to match Jinja2
* modify by review
* MiniCPM5: use autoparser for XML tool calls and fix grammar preserved-token triggers
* MiniCPM5: fix streaming tool-arg placeholder and remove alt XML markers
* skip min/max attribute tests in -py mode
* test-jinja: use real expected output for min/max attribute tests
* MiniCPM5: revert shared mapper and history fallbacks per review
Drop streaming tool-arg placeholder workarounds from the generic PEG
mapper and restore strict tool-call argument JSON parsing so MiniCPM5
support stays limited to autoparser/diff-analyzer changes.
* chat : refactor minicpm5 back to dedicated parser
* cont : simplify grammar
* cont : refactor
* cont : fixes
* cont : rename template to openbmb-MiniCPM5-1B.jinja
* cont : add message delimiters
* cont : fix tests
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Co-authored-by: zhangtao <zhangtao2@modelbest.cn>
Co-authored-by: 张涛 <>
