TypeError: onSessionRestored is undefined when resuming sessions in 2.1.120

Summary

In Claude Code 2.1.120, running claude --continue (or --resume) crashes the TUI with:

ERROR  UKH is not a function. (In 'UKH(K)', 'UKH' is undefined)

at cli.js:9247:5663.

The minified variable UKH is destructured from a session-config object as onSessionRestored. When the TUI mounts and tries to invoke that callback, it's missing → crash.

Repro

# In any directory with an existing Claude Code session history
claude --continue

The error appears immediately on TUI mount. The session UI never becomes interactive.

Confusing aspect

The stack trace shows lines 9248–9250 of the bundle, which happen to contain the template literal source for the sandbox required but unavailable error. That made it initially look like a sandbox issue. It is not — getSandboxUnavailableReason() is in the same useEffect body, but never executes because UKH(K) throws first.

Surrounding source (relevant part of the same useEffect):

({onBeforeQuery: FKH, onTurnComplete: vvH, onSessionRestored: UKH, ...})
// ...
c(K), tOH.current.current = u3$(K, U6), UKH(K)

onSessionRestored is being destructured from a config object that doesn't always provide it.

Versions tested

• 2.1.119: claude --continue works correctly. Session resumes, TUI loads with the conversation banner.
• 2.1.120: crash above on every --continue / --resume of an existing session.

Confirmed by symlinking ~/.local/bin/claude to each version and re-running the same command in the same directory.

Workaround

Pin to 2.1.119:

ln -sfn ~/.local/share/claude/versions/2.1.119 ~/.local/bin/claude

Environment

• OS: Ubuntu 22.04
• Shell: zsh (login shell -l)
• Claude Code version: 2.1.120 (2.1.119 last working)
• No sandbox config in any settings layer

Suggested fix

Either provide a default no-op for onSessionRestored, or guard the call with UKH?.(K) / if (UKH) UKH(K).