improvement(search): simplify GitHub App setup dialog

[icecrasher321]

Summary

• Simplify GitHub App setup to one field with the installation selector and Install/Refresh controls.
• Show installation guidance only when no installations are available. Keep the account-connection instructions, loading states, and errors for the steps that need them.

Type of Change

• Improvement

Testing

91 existing setup and installation-modal tests passed. App type-check, lint, all 46 repository audits, block registry, and docs manifest checks passed. Connection and authorization behavior is unchanged.

Checklist

• Code follows project style guidelines
• Self-reviewed my changes
• Existing tests passing
• No new warnings introduced
• I confirm that I have read and agree to the terms outlined in the Contributor License Agreement (CLA)

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1 Skipped Deployment

Project	Deployment	Actions	Updated
docs	Skipped		Sep 10, 2026 3:10am UTC

[greptile-apps]

Confidence Score: 5/5

The PR appears safe to merge; no concrete behavioral, accessibility, security, or repository-rule regression was identified.

Summary

• Shows account-connection instructions when a user connection is required.
• Shows installation guidance only when no eligible installations exist.
• Keeps loading, unavailable, error, Install, and Refresh states intact.
• Preserves existing installation selection and authorization behavior.

_{Reviews (1) · Last reviewed commit: "improvement(search): simplify GitHub App..."}