* feat(utils): add record guards and pure helpers to @sim/utils
Add isRecordLike (loose, non-prototype-checked record guard) and
sortObjectKeysDeep; relocate isPlainRecord (strict) and normalizeEmail
into @sim/utils so they are reusable across apps and packages. Unit tests
cover the loose-vs-strict distinction, deep key sorting, and email
normalization.
* refactor(sim): consolidate record guards and normalize helpers onto @sim/utils
Replace ~55 re-implemented loose record guards with the canonical
@sim/utils isRecordLike (and one strict site with isPlainRecord), and
dedupe three normalize clusters: sortObjectKeysDeep (sanitization +
copilot builders), normalizeToken (salesforce + servicenow triggers),
and normalizeEmail. Array-allowing guards and domain-specific normalizers
are intentionally left untouched. Pure refactor — identical predicates
and transforms, no behavior change.