Feature request: automatic context clearing (in addition to auto-compact)

Currently Claude Code only supports automatic compaction (summarizing conversation history as it nears the context limit). There's no way to automatically clear (fully wipe) context — /clear is manual-only, and hooks can't invoke slash commands to trigger it on a schedule or condition.

Requesting a way to auto-clear context, e.g.:

• A configurable trigger (turn count, idle time, or explicit task boundary) to run an automatic /clear
• Or a settings.json option to opt into this behavior

Use case: long-running or repetitive sessions where old context is irrelevant to the next task and full compaction still carries unwanted history forward.