Markdown list items in TUI drop characters and split words when wrapped

What version of Kimi Code CLI is running?

1.45.0

Which open platform/subscription were you using?

Kimi Code / Allegretto

Which model were you using?

Kimi-k2.6 (Kimi Code)

What platform is your computer?

Linux 6.8.0-117-generic x86_64 x86_64

What issue are you seeing?

In the shell TUI, wrapped markdown list items render incorrectly.

Observed behavior:

• some characters at the right edge of a wrapped list line disappear
• words can be wrapped in the middle instead of at word boundaries
• this affects markdown bullet lists and numbered lists
• it is more noticeable when markdown is rendered inside another outer bullet/container in the conversation UI

This appears to be a rendering issue in markdown list layout, not a model output issue.

Example:

Notice: thro(ug)h, Pro(to)col, compac(ti)on

What steps can reproduce the bug?

1. Start kimi-cli in the interactive TUI.
2. Ask it to print a markdown list with long items, for example:

- **What it does:** Acts as an autonomous agent that can write code, run shell commands, edit files, browse the web, and manage multi-step tasks through an interactive chat interface
- **Architecture:** Built around a core agent loop (KimiSoul) that orchestrates LLM calls, tool execution, context management, and conversation compaction

1. **Startup** - When you run `kimi --cwd .`, Kimi CLI launches the agent and begins rendering the conversation in the terminal.
2. **Session flow** - You type a prompt in the TUI and the response is rendered as markdown content inside the assistant message bubble.

3. Use a narrow terminal width so the list items wrap.
4. Observe the rendered output.

What is the expected behavior?

• wrapped list items should preserve all characters
• words should wrap only at valid word boundaries
• numbered and bulleted lists should align correctly after wrapping
• rendering should remain correct even when the markdown block is nested inside the assistant message layout

Additional information

From local investigation, the issue is specific to markdown list-item rendering in the TUI. The failure mode is:

• list item content is wrapped as if it had the full available width
• the bullet/number prefix is then added afterward
• the prefix consumes columns that were not accounted for during wrapping

That leads to:

• clipped characters at the right edge
• awkward mid-word wrapping in list items

Reproduce the issue in the kimi-cli interactive TUI using the provided long Markdown lists and a narrow terminal width. Trace the markdown list-item rendering and wrapping path, checking how the bullet or number prefix affects available width. Done means preserving all characters, wrapping at word boundaries, and aligning nested and top-level numbered and bulleted lists correctly.