chore(lint): enable clippy::enum_glob_use

[tupe12334]

Summary

• Adds enum_glob_use = "deny" to core/Cargo.toml's [lints.clippy] table, matching the crate's existing incremental lint-ratchet convention (it already denies the closely-related wildcard_imports).
• Zero violations in the tree today — this is a clean regression guard against future use MyEnum::*; glob imports, which can shadow/clash variant names and obscure where a bare variant name comes from at the use site.

Test plan

• cargo clippy --all-targets — clean, no new warnings
• cargo test — 15 tests pass

Closes #165

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This pull request was opened by the Open issues → fix PRs (owned repos + my orgs) routine of moadim.