Apply the canonical formatter (interviews/vault/scripts/format_yaml_questions.py)
across the published question corpus. Edits are purely cosmetic:
- strip redundant single quotes from scalar values that parse identically
unquoted (e.g. id: 'cloud-0231' becomes id: cloud-0231)
- re-indent options list items to match the canonical 4-space style
- normalize trailing-newline handling
Verified equivalent on multiple samples: zero content change. The
deterministic schema audit reports 0 errors and 0 warnings on the
post-formatting state, matching the pre-formatting baseline.
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