Merge pull request #102 from LIUyizheSDU/main

Merge pull request #5 from LIUyizheSDU/paper

Merge branch 'ruc-datalab:main' into main

feat(chat_v2): support 4C API key

Update custom model prompt guidance

fix(chat_v2): ignore backticked structured tags during parsing

chore(chat_v2): checkpoint existing prompt preset edits

refactor(chat_v2): remove selected path card from right panel

fix(chat_v2): enforce fixed model for local/heywhale and persist custom model

feat(chat_v2): auto save Answer as markdown report

chore(chat_v2): checkpoint existing frontend workspace changes

fix(chat_v2): consolidate custom prompt and improve preview/stream parsing

Revise news section in README.md

refine(example): update 4c competition files

feat(example): add 4c competition files