feat(tui): add a switch to disable the CLI's own terminal-title (OSC 0) writes

Look for the updateTerminalTitle or setTitle function calls in the TUI code, likely in a file handling session start, resume, switch, and title-change events. The change is to conditionally skip those writes based on a new environment variable (e.g., KIMI_CODE_DISABLE_TERMINAL_TITLE) or a tui.toml configuration key. Test by running the CLI with the flag set and verifying the terminal title is not overwritten.

What version of Kimi Code is running?

kimi --version: 2.0.2 (installed via Homebrew, /opt/homebrew/bin/kimi)

What platform is your computer?

macOS, Ghostty terminal (also relevant to tmux, WezTerm, iTerm2 — any terminal that displays OSC 0 in tab titles).

What feature would you like to see?

An official switch to disable the TUI's own terminal-title management, so a shell wrapper (or the user's own setup) can own the tab title.

Background: the TUI writes the session title (or the product name, before a title is generated) to the terminal via OSC 0 on session start, resume, session switch, and every session-title change. There is currently no env var, config.toml key, or tui.toml key to turn this off.

For comparison, Claude Code has CLAUDE_CODE_DISABLE_TERMINAL_TITLE=1 for exactly this purpose. Prior art on the other side: #1885 (open) proposes putting more state into the title — so a toggle would serve both camps: users who want the tab to say "kimi: " from their shell wrapper, and users who want a working-state spinner there.

Concrete use case: a fish wrapper around the kimi binary sets the Ghostty tab title to kimi: <dirname> (basename only, since titlebar tabs truncate from the right). Today the wrapper's title is overwritten within a second by the CLI's own OSC 0 write. With a switch, the wrapper sets the title once and nothing fights it; on exit the terminal's shell integration restores the cwd title at the next prompt.

Requested shape (any of these is fine):

• An env var, e.g. KIMI_CODE_DISABLE_TERMINAL_TITLE=1 (mirrors Claude's naming), or
• a tui.toml key, e.g. terminal_title = false (mirrors the shape requested in #1885, which suggested a tui.toml flag for its own titling).

Ideally the switch suppresses all OSC 0 writes from the TUI (updateTerminalTitle / setTitle call sites: session start, resume, switch, and title-change events).

What is the current workaround?

None that isn't fragile — the only option today would be racing or filtering the CLI's output, which isn't worth it. Until this exists, the wrapper approach is unusable.

Related

• #1885 — proposes mirroring working state into the terminal title (also asks for a tui.toml flag around titling).