Bug: Session load crashes with str3.replace error

[Ashwinhegde19]

Bug Description

When attempting to load a session that contains messages, Kilo CLI crashes.

Error:

TypeError: undefined is not an object (evaluating 'str3.replace')
    at titlecase (src/util/locale.ts:3:12)

Steps to Reproduce

1. Create a session in VS Code Insiders with KiloCode extension
2. Have some conversation (messages) in the session
3. Try to continue the same session in Kilo CLI: kilo --session ses_XXXXXXXX
4. CLI crashes with the error above

Expected Behavior

Session should load and display conversation history.

Actual Behavior

CLI crashes immediately with titlecase error.

Environment

• OS: Linux (Arch)
• Kilo CLI Version: 1.0.19
• VS Code: Insiders

Additional Context

The session JSON and message files exist in ~/.local/share/kilo/storage/ with correct format. The crash happens in the titlecase function in src/util/locale.ts when loading sessions with messages.

This prevents syncing sessions between VS Code KiloCode and Kilo CLI.