feat: --starting-prompt flag to prompt without exit

[stebbins]

Related Issue

• closes --starting-prompt flag to start the session with a prompt without exiting #887 issue
• discussion on a tangentially-related issue

Description

• Add a new flag: --starting-prompt / -s
• This is very similar to the existing -p / -c flags!
• However, there is an important difference: Kimi Code CLI does not exit the session after processing the prompt
• Functionally, this gives equivalent behavior as Claude Code when passing a prompt via CLI arg
• This unlocks the capability of higher-level processes to more easily "orchestrate" Kimi Code CLI sessions without building away from the design philosophy of the project (from my understanding, at least)
• Note: the diff appears very large but this is mainly due to make gen-docs gen-changelog -- the actual functional change is under 100 lines

Screenshots

Using -s

Using -c/-p

Checklist

• I have read the CONTRIBUTING document.
• I have linked the related issue, if any.
• I have added tests that prove my fix is effective or that my feature works.
• I have run make gen-changelog to update the changelog.
• I have run make gen-docs to update the user documentation.

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[devin-ai-integration]

Devin Review found 1 potential issue.

View issue and 3 additional flags in Devin Review.

[devin-ai-integration]

Devin Review found 1 new potential issue.

View issue and 4 additional flags in Devin Review.

[LordLix1]

what the fuck

[LordLix1]

wdym what the fuck

[LordLix1]

i mean what the fuck do you want from me