Plan mode exit prompt: hide 'clear context' option when auto-compact is enabled

Summary

When CLAUDE_AUTOCOMPACT_PCT_OVERRIDE is set (auto-compact enabled), the plan mode exit prompt still shows "Yes, clear context (N% used) and bypass permissions" as the first option. This is redundant — auto-compact already manages context automatically, so manually clearing context is unnecessary and confusing.

Current behavior

After a plan is written, the exit prompt always shows:

1. Yes, clear context (69% used) and bypass permissions
2. Yes, and bypass permissions
3. Yes, manually approve edits
4. Type here to tell Claude what to change

Option 1 implies the user needs to manage context manually, which contradicts the auto-compact setting.

Expected behavior

When auto-compact is enabled (CLAUDE_AUTOCOMPACT_PCT_OVERRIDE is set or autoCompact is on), either:

• Hide option 1 entirely (auto-compact handles it), or
• Add a setting like planModeAutoApprove: true to skip the prompt altogether, or
• Auto-select option 2 when auto-compact is active

Environment

• Claude Code (CLI)
• macOS
• CLAUDE_AUTOCOMPACT_PCT_OVERRIDE=80 set in ~/.claude/settings.json env block

Why this matters

Users who've configured auto-compact have already opted into automatic context management. Showing them a manual "clear context" option on every plan exit adds friction and decision fatigue for a choice that's already been made.