Remove remaining Mint names and wording after retirement

Follow-up to #1029, which retires Mint. Docs that give readers wrong output or refused commands are fixed in #1029 itself; this issue covers what remains.

Code, rename only:

- [ ] `MintResourceServer` in `registry-evidence-oid4vci` (`authorizer.rs`, `service.rs`, `tests/offer_authorization.rs`); it works with any issuer
- [ ] Test `the_offer_boundary_shares_no_code_path_with_the_mint_client_identity`
- [ ] `mint.example.org` hosts in the oid4vci `config.rs` and `service.rs` fixtures, `tests/inji_interoperability.rs` and `tests/state_machine_recovery.rs`, and the "synthetic Evidence and Mint support listener" comment

Prose that still describes Mint:

- [ ] `docs/site/src/content/docs/tutorials/derive-a-registry-from-publicschema.mdx`
- [ ] `docs/site/src/content/docs/configure/evidence.mdx`
- [ ] `docs/site/src/content/docs/operate/casework.mdx`
- [ ] `docs/site/src/content/docs/operate/breg.mdx`
- [ ] `docs/site/src/content/docs/operate/retention-and-persistent-state.mdx`
- [ ] `docs/site/src/content/docs/explanation/known-limitations.mdx`
- [ ] `docs/site/src/content/docs/reference/glossary.mdx`
- [ ] `docs/site/src/content/docs/tutorials/first-run-with-solmara-lab.mdx` (including the `registry-mint` tag)
- [ ] `products/breg/DEV.md`
- [ ] `products/breg/SPATIAL-QUERIES.md`
- [ ] `products/breg/immediate-actions.md`
- [ ] `products/breg/examples/access-review/README.md`
- [ ] `products/relay-v2/DEFINITION-OF-DONE.md`
- [ ] `products/evidence/PERFORMANCE.md`
- [ ] `crates/registry-bregctl/src/dev/prepare_source.rs` (comment)
- [ ] `crates/registry-evidence-client/tests/against_a_real_deployment.rs` (comment)

Keep: the refusal of the retired `mint` config key, the refusals of retired CLI flags and state in the three `*ctl` binaries, `.github/workflows/release-repeatability.yml`, historical changelogs and release manifests, and `products/breg/quickstart/self-test.sh`.

Start by searching the listed Rust files, tests, documentation pages, product guides, and comments for Mint names, wording, and hosts. Review #1029 to understand the retirement terminology, then update only the remaining references and run the affected Rust tests. Done means every checklist item is renamed or reworded while the explicitly preserved refusals, workflow, historical records, and quickstart script remain unchanged.

Written by the indexing model from the issue text.