chore(account-deletion): neutral example hosts (unblocks stage promotion #11527)
The egress audit's static-hostnames test failed on the promotion #11527: account-deletion-token.ts (doc comment) and request-account-deletion.dto.ts (doc comment + Swagger example) named app.ever.team / app.gauzy.co / ever.co, which core code may not. Replaced with example.com hosts; comments/example only, no behaviour change. node --test tools/egress-audit/static-hostnames.test.mjs: 7 pass, 0 fail.
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Summary by cubic
Replaces Ever-owned hostnames in the account-deletion doc comments and the Swagger callbackUrl example with neutral example.com hosts. The egress audit's static-hostnames test was failing the #11527 stage promotion because core code may not name Ever hosts outside the Ever Platform modules; this unblocks the promotion. Comments and examples only, no behavior change.