Polish onboarding runtime error states

[cynfria]

Why

Keep onboarding harness-card errors compact and readable without shifting card content or obscuring the setup action.

What

• Pin short 12px error labels to the bottom of runtime cards while preserving their existing content positions
• Show sanitized explanatory detail in an accessible, theme-aware tooltip below the card
• Keep setup and retry actions in the existing pill affordance
• Add deterministic Playwright coverage for install, sign-in, authentication-status, and configuration errors

Risk Assessment

Low — the production change is limited to onboarding runtime-card error presentation and existing action placement. The remaining changes are E2E-only mock support and regression coverage.

References

• Final visual: https://sprout-oss.stage.blox.sqprod.co/media/11337f0ff35ca3fb525cb8b408f620ec691cdaa1e890b4eac4d6b68cf655ec57.png
• Verified with repository pre-push gates plus focused Playwright error-state coverage

Generated with Peppermint Butler

[wesbillman]

This goes beyond presentation-only error polish.

The diff adds new runtime-query/refetch behavior for authStatus: unknown and changes failed install behavior from a static error state to a retrying SET UP action that invokes installation again. Those are functional setup-flow changes, not merely compact labels/tooltips. Please retain the existing action/query behavior and limit this PR to rendering the existing errors, or split the retry/refetch behavior into a separate PR.

Also, the install tooltip currently uses runtimeDetailText(runtime) rather than the install failure detail, so “Setup failed” can explain only the pre-install availability state (for example, “adapter missing”), not why setup failed. A sanitized failure explanation should be derived without changing the action lifecycle.

Current-head CI is green, but the branch is one commit behind main; rebase and rerun CI after narrowing.

[wesbillman]

The recovery actions are valid, raw installation errors remain sanitized, and the updated tooltip now truthfully describes the failed setup attempt. The focused E2E expectation covers the corrected copy. Approved pending fresh CI on b200602.