Remove failures/ from repo

[ajaxspace]

failures/ folder should not be committed to version control.

It contains transient debug artifacts generated during golden test failures, and should be:

• Ignored via .gitignore
• Used only for local diagnosis

✅ Add this to .gitignore if not already present:

test/**/failures/

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Impact:

• A broken widget means golden test output is invalid and untrustworthy.
• Pushing failures/ pollutes the repo with debug-only files and bloats the history.