Interactive fix-confirmation prompt doesn't render under default (fancy) progress mode

[rubberduck203]

Summary

doctor run --fix=true prompts for confirmation before running a fix (prompt_user in src/doctor/runner.rs:380-392). In the default progress mode (the tracing_indicatif spinner UI), that prompt doesn't visibly render in a real terminal — it appears to hang. Switching to --progress plain makes the prompt show up immediately and work correctly.

The prompt code already wraps itself in tracing_indicatif::suspend_tracing_indicatif specifically to pause the spinner while inquire reads input:

// src/doctor/runner.rs:380-392
fn prompt_user(prompt_text: &str, maybe_help_text: &Option<String>) -> bool {
    tracing_indicatif::suspend_tracing_indicatif(|| {
        let prompt = {
            let base_prompt = inquire::Confirm::new(prompt_text).with_default(false);
            match maybe_help_text {
                Some(help_text) => base_prompt.with_help_message(help_text),
                None => base_prompt,
            }
        };

        prompt.prompt().unwrap_or(false)
    })
}

That suspend doesn't fully prevent the spinner from stomping on the prompt render — this predates today's work (confirmed via git blame, unrelated to #341/#342/#343 merged earlier today) and isn't a regression, but it's a real, reproducible UX bug in a real interactive terminal.

Reproduction (MVCE)

mkdir -p /tmp/scope-prompt-hang/.scope
cat > /tmp/scope-prompt-hang/.scope/group.yaml <<'YAML'
apiVersion: scope.github.com/v1alpha
kind: ScopeDoctorGroup
metadata:
  name: prompt-hang-repro
spec:
  actions:
    - name: needs-file
      check: { commands: ["test -f needed.txt"] }
      fix:
        prompt:
          text: "Create needed.txt?"
        commands:
          - "touch needed.txt"
YAML

cd /tmp/scope-prompt-hang
scope doctor run --fix=true --no-cache

Run this from a real interactive terminal (not piped, --yolo not set).

Expected: the "Create needed.txt? (y/n)" prompt renders immediately and accepts input.

Actual: nothing visibly renders — the terminal appears to hang. Adding --progress plain:

scope doctor run --fix=true --no-cache --progress plain

...makes the same prompt render and behave correctly right away.

Suggested fix

Investigate why suspend_tracing_indicatif isn't fully suppressing the spinner's terminal writes during the inquire prompt in fancy-progress mode — possibly a race between the spinner's redraw tick and inquire taking over the terminal, or an interaction with the IndicatifWriter used for stdout/stderr (src/shared/logging.rs:340-346).

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