Reduce repeated session.idle work by reusing hook config loads across a short TTL and by retrying parent session lookup instead of permanently caching transient failures.
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
Move loadClaudeHooksConfig and loadPluginExtendedConfig after isHookDisabled check
in both tool-execute-before and tool-execute-after handlers to skip 5 file reads
per tool call when hooks are disabled (C1)
Apply the internal initiator marker to automated continuation, recovery, babysitter, stop-hook, and hook-message injections so Copilot attribution consistently sets x-initiator=agent for system-generated prompts.
YeonGyu-Kim