chore(supply-chain): import canonical audit peers and regenerate exemptions

The criterion dev-dep added in the preceding test: commit brought in
~30 transitive crates that weren't covered by cargo-vet, causing the
non-required Cargo Vet (Supply Chain) CI check to fail.

Imported 6 canonical public audit sources (google, mozilla,
bytecode-alliance, isrg, zcash, fermyon), trusted the publishers
cargo-vet suggested as already cross-trusted by those orgs
(sunfishcode, BurntSushi, cuviper, alexcrichton, starkat99), then
regenerated exemptions for the residual safe-to-run gaps (criterion's
bench-time-only transitive tree: plotters, web-sys diff, criterion-plot,
etc.).

Net effect: config.toml shrinks by ~250 lines (existing hand-managed
exemptions now satisfied by audits in the imported peers); imports.lock
gains the locked audit references. cargo vet now reports: 83 fully
audited, 5 partially audited, 98 exempted.

Note: Phase 2 of the audit-driven cleanup deletes the supply-chain/
machinery entirely (per the catchphrase-agent recommendation —
cargo-audit + cargo-deny already cover CVEs and licenses). This commit
just unblocks the failing check on PR #36 so it ships clean.

Author: 27Bslash6

supply-chain/audits.toml

@@ -2,3 +2,57 @@
 # cargo-vet audits file
 
 [audits]
+
+[[trusted.half]]
+criteria = "safe-to-run"
+user-id = 3416 # Kathryn Long (starkat99)
+start = "2019-10-04"
+end = "2027-05-30"
+
+[[trusted.is-terminal]]
+criteria = "safe-to-deploy"
+user-id = 6825 # Dan Gohman (sunfishcode)
+start = "2022-01-22"
+end = "2027-05-30"
+
+[[trusted.linux-raw-sys]]
+criteria = "safe-to-deploy"
+user-id = 6825 # Dan Gohman (sunfishcode)
+start = "2021-06-12"
+end = "2027-05-30"
+
+[[trusted.memchr]]
+criteria = "safe-to-deploy"
+user-id = 189 # Andrew Gallant (BurntSushi)
+start = "2019-07-07"
+end = "2027-05-30"
+
+[[trusted.rayon]]
+criteria = "safe-to-run"
+user-id = 539 # Josh Stone (cuviper)
+start = "2019-06-13"
+end = "2027-05-30"
+
+[[trusted.regex-syntax]]
+criteria = "safe-to-deploy"
+user-id = 189 # Andrew Gallant (BurntSushi)
+start = "2019-03-30"
+end = "2027-05-30"
+
+[[trusted.rustix]]
+criteria = "safe-to-deploy"
+user-id = 6825 # Dan Gohman (sunfishcode)
+start = "2021-10-29"
+end = "2027-05-30"
+
+[[trusted.walkdir]]
+criteria = "safe-to-deploy"
+user-id = 189 # Andrew Gallant (BurntSushi)
+start = "2019-06-09"
+end = "2027-05-30"
+
+[[trusted.web-sys]]
+criteria = "safe-to-deploy"
+user-id = 1 # Alex Crichton (alexcrichton)
+start = "2019-03-04"
+end = "2027-05-30"