[Feature Request] Add setting to disable automatic PR badge display in UI

Bug Description
Feature request: setting to disable the auto-displayed PR badge ("PR #N") when the current branch has an open PR

When my local branch has an open GitHub PR, Claude Code automatically displays a "PR #55"-style badge in the UI. There's currently no way to turn this off — prUrlTemplate only changes where it links, and
attribution.pr only affects PR description text.

I want full control over what appears in my status area. I already have a custom status line script (~/.claude/scripts/status-line.sh) that I curate carefully. PR information being injected by the UI outside
my status line means I can't choose where it goes, whether it shows, or what format it takes.

Request: Add a setting (e.g. ui.showPRBadge: false or branchPRDisplay: "off") to disable the automatic PR badge entirely.

Rationale: The information should be additive, not imposed. Users who want PR info in their status line can read it themselves via gh pr view --json number in their statusLine command. The current behavior
takes that choice away.

Environment Info

• Platform: darwin
• Terminal: WarpTerminal
• Version: 2.1.143
• Feedback ID: 45cbadf5-5e5c-4cfe-8e0a-3ca094d2b065

Errors

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