Improve diagnostics for missing bindings and sandbox requirements

[khoinguyenpham04]

This Roadmap discussion mirrors #1686: Improve diagnostics for missing bindings and sandbox requirements.

Use this discussion to upvote the roadmap item and discuss priority, use cases, and product feedback. Keep implementation tracking, reproduction details, and PR-specific feedback on the source issue.

• Source issue: #1686
• Status: Open
• Labels: None
• Original author: ascorbic

Original Issue

Goal

Production setup failures should produce actionable errors instead of generic runtime failures.

Scope

Improve diagnostics for missing platform bindings, unavailable sandbox runners, misconfigured storage/database bindings, and plugin sandbox requirements.

Acceptance criteria

• Missing required bindings identify the binding name and feature that needs it.
• Sandbox runner failures explain whether the issue is config, platform support, or runtime startup.
• Admin/API responses avoid misleading NOT_CONFIGURED-style errors when config is present but incomplete.
• Docs link to the relevant setup instructions.
• Tests cover representative missing-binding cases.