/model picker is inconsistent: model step is arrow-keys-only, but the effort/context steps accept direct number input #3715

Summary

The /model flow uses two different interaction patterns across its consecutive steps. Selecting the model requires arrow-key navigation, but the subsequent prompts (reasoning effort, context, etc.) are numbered and accept direct numeric entry. This forces a hand/keyboard-mode switch mid-flow and is surprising.

Steps to reproduce

1. Run /model.
2. Step 1 — model list: all models are listed. The only way to move the selection is the arrow keys; typing 1, 2, … does nothing.
3. Pick a model with arrows and press Enter.
4. Step 2+ — effort / context / etc.: these options are numbered, so you can immediately press 1 / 2 to choose — no arrows needed.

Expected

Consistent selection across all steps of /model. Either:

• the model list also supports direct numeric quick-select (preferred — faster for long lists), or
• all steps use the same single mechanism.

Actual

Step 1 is arrow-only; later steps are numbered/typeable. The interaction model changes partway through the same command.

Environment

• Copilot CLI: 1.0.60
• OS: Windows 11 Pro
• Terminal: WezTerm
• Shell: PowerShell 7.6.2

Suggested fix

Add numeric quick-select to the model list to match the effort/context pickers (keep arrows working too). This keeps long model lists fast while making the whole /model flow consistent.