--agent-file for 'kimi web' as in the 'kimi'

[Krivodel]

What feature would you like to see?

Problem

--agent-file is supported by the kimi subcommand but not by kimi web,
which always loads the default agent.

Proposed Solution

Add --agent-file support to kimi web for consistency.

Implementation

I have already implemented this in my fork: main...Krivodel:kimi-cli:web-agent-file
Happy to open a pull request if this is welcome.

Additional information

Note: in my implementation, --agent-file works when passed directly to kimi web,
but not when switching to web mode via the /web command inside a kimi --agent-file session —
in that case, the default agent is loaded instead.