Task agents fail with 'classifyHandoffIfNeeded is not defined'

Description

Multiple Task agents crash with the error classifyHandoffIfNeeded is not defined. This appears to be an internal function reference that doesn't exist or was removed.

Environment

• Claude Code Version: 2.1.27
• Platform: Linux x86_64 (Ubuntu 24.04, kernel 6.14.0-37-generic)
• Node: v22.x

Reproduction

1. Use the Task tool to spawn multiple agents (e.g., research agents, general-purpose agents)
2. Some agents fail with the error shown below
3. Error appears in the task failure status

Error Message

Task [task-id] (type: local_agent) (status: failed) Delta: classifyHandoffIfNeeded is not defined

Observed Behavior

• 6 different Task agents failed with identical error
• All were local_agent type
• Error suggests the agent handoff/classification system is calling an undefined function
• Searched user codebase - function does not exist in user files, appears to be internal to Claude Code

Expected Behavior

Task agents should complete without reference errors to undefined internal functions.

Additional Context

The agents were spawned for various purposes (OSINT research, technical analysis). All failed at what appears to be a handoff classification step. The error is consistent across different agent types, suggesting a shared code path with a missing function definition.

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