chore(videre): terse rustdoc and dedup QA sweep

[mfw78]

What

Rebases the three QA-sweep commits (docs/refactor/test) onto the reworked feat/venue-logging-capability base, dropping the hunks the base already supersedes.

• videre-host/src/registry.rs: renames window_ms to saturating_ms and has SystemClock::now_ms reuse it, drops derive_more::Into from VenueId (keeping AsRef/Display), tersens the rustdoc on VenueId, QUOTE_HORIZON_MS, the quotes field, record_quote, and check_quote_freshness, converts several matches! assertions to assert_eq!, and adds two registry tests: a_re_quote_refreshes_and_re_arms (re-quoting the same bytes refreshes the ledger entry, the refreshed valid-until-ms governs staleness, and a fresh quote after a refusal re-arms the body) and an over-cap unchecked-submit case appended to the existing ledger-cap test.
• videre-sdk/src/client.rs and videre-sdk/src/keeper.rs: Venue::classify_denied's default now delegates to keeper::DROP_DENIED (now pub(crate)) instead of restating the drop rule inline, tersens the surrounding rustdoc, and replaces sweep_and_free_fn_agree with a_softened_denial_keeps_the_watch_then_drops_on_the_repeat, dropping the free-fn-vs-sweep-default assertions that the rework's retry_action changes made redundant.
• videre-host/src/client.rs and videre-sdk/tests/adapter.rs: converts assert!(matches!(...)) error-path assertions to assert_eq! against the unwrapped error, and tersens one doc comment.
• videre-macros/src/lib.rs and videre-macros/src/world.rs: tersens two rustdoc comments and adds a one-line test comment noting the adapter-ident pass-through is a deliberate pin, not merely logging-specific.
• modules/fixtures/logging-venue/src/lib.rs: drops two now-redundant doc comments (Test-only. and A zero native amount.).

The Clock trait's #[auto_impl(&, Arc)] and the auto_impl dependency in videre-host/Cargo.toml/Cargo.lock are left untouched; that cleanup belongs to #43.

Why

The prior sweep commits were cut against an earlier version of the venue-logging-capability base and no longer applied cleanly once that base was reworked (saturating_ms/window_ms rename, the QUOTE_GRACE_MS invariant, the body: &[u8] record_quote signature). This PR re-derives the sweep against the current base: the terseness and matches!-to-assert_eq! conversions still stand on their own merits, and the two new registry tests close gaps the base's re-quote and over-cap-unchecked-submit paths left uncovered. Part of #27.

Testing

• cargo clippy -p videre-host -p videre-sdk -p videre-macros --all-targets --all-features -- -D warnings - exit 0, no warnings.
• cargo test --doc -p videre-host -p videre-sdk -p videre-macros --all-features - exit 0.
• RUSTDOCFLAGS='-D warnings' cargo doc --no-deps -p videre-host -p videre-sdk -p videre-macros - exit 0.
• cargo nextest run -p videre-host -p videre-sdk -p videre-macros --all-features - all tests pass, including the new a_re_quote_refreshes_and_re_arms and the appended over-cap unchecked-submit case.

AI Assistance

Implemented with claude-fable-5, red-teamed with claude-opus-5, PR description written by claude-sonnet-5.

[mfw78]

Deferred sweep finding filed: #42 (unify the quote-ledger Clock with the runtime's wall-clock seam; judged too large for this sweep). The upstream tracing-sink macro consolidation is noted in the glue comment and tracked via nullislabs/nexum-runtime#76.