Override the resume continuation message
CLAUDE_CODE_RESUME_PROMPT replaces the default 'Continue from where you left off.' message injected when resuming a session that ended mid-turn. Useful for spawn scripts that need a more directive boot message.
# Long-running agent boot script — be explicit about what to do on resume
export CLAUDE_CODE_RESUME_PROMPT="Resume the migration and stop after the next test run."
claude --resume