feat(tui): enable OSC 9;4 terminal progress in VSCode integrated terminal

What version of Kimi Code is running?

kimi --version: 0.27.0

What platform is your computer?

Windows 11 x64, VSCode 1.129.0 integrated terminal (TERM_PROGRAM=vscode).

What issue are you seeing?

The TUI's ConEmu-style OSC 9;4 work-in-progress reporting is never emitted inside the VSCode integrated terminal, because supportsTerminalProgress() (apps/kimi-code/src/tui/utils/terminal-notification.ts) only allow-lists Windows Terminal (WT_SESSION), ConEmu (ConEmuANSI=ON), Ghostty and WezTerm.

VSCode supports OSC 9;4 progress sequences since 1.97 (January 2025 release notes: "Support for ConEmu's progress escape sequences"), rendering them as a spinner/percentage in terminal tabs. So the terminal capability is there — the allow-list just doesn't include it.

Proof it works once enabled

Setting ConEmuANSI=ON in the VSCode terminal environment (i.e. lying to the allow-list) makes Kimi Code's progress reporting work as intended in VSCode terminal tabs. No other change needed.

Expected behavior

Add vscode to the allow-list:

if (termProgram === 'vscode') return true;

Caveats worth knowing

• In VSCode, progress is only visible in tabs if the user adds ${progress} to terminal.integrated.tabs.title/description — worth mentioning in docs.
• VSCode editor-area terminal tabs never render OSC 9;4 at all (only panel-area tabs do) — that's a VSCode-side limitation (see microsoft/vscode#240117), out of scope for this request. I filed a separate issue proposing a title-based status channel that covers that case.

Start in apps/kimi-code/src/tui/utils/terminal-notification.ts and inspect supportsTerminalProgress(), especially its existing terminal allow-list. Verify the TERM_PROGRAM=vscode path enables OSC 9;4 reporting, and update the relevant documentation to mention the ${progress} tab setting and the editor-area limitation. Done means VSCode integrated terminals are recognized without changing behavior for other terminals.