Add SDK CI failure accountability guide

[El-swaggerito]

Description

Difficulty: Hard

Type: Documentation

Summary

Create guidance explaining how contributors should handle failing SDK CI checks.

Current Behaviour

Some PRs may include tests but leave CI failing.

Expected Behaviour

The SDK repo should explain that failing CI can affect evaluation and should be fixed before assuming completion.

Suggested Implementation

Document common CI failures, fix steps, local commands, and review expectations.

Files or Areas Likely Affected

• docs/
• README.md
• .github/

Acceptance Criteria

• Guide explains that failing CI can affect approval.
• Common CI failures are listed.
• Local reproduction commands are included.
• Fix expectations are documented.
• Reviewer expectations are included.
• README links to the guide.

Additional Notes

This maps directly to the warning about failing checks.