/model displays effort from settings.json, ignoring CLAUDE_CODE_EFFORT_LEVEL env var override

Description

The /model command does not reflect the effort level set via the CLAUDE_CODE_EFFORT_LEVEL environment variable. It only displays the value from settings.json, which can be misleading.

Additionally, /effort and /model show contradicting values, making it unclear which effort level is actually being used.

Steps to reproduce

1. Set export CLAUDE_CODE_EFFORT_LEVEL=medium in your shell
2. Set "effortLevel": "high" in ~/.claude/settings.json
3. Start Claude Code
4. Run /model - shows high effort
5. Run /effort - shows medium effort

Expected

Both /model and /effort should show the same resolved effort level, accounting for env var precedence.

Actual

/model shows high (from settings.json), /effort shows medium (from env var). The user has no way to know which value is actually being applied.

Environment

• Model: Opus 4.6 (1M context)
• Platform: Linux (EC2)