ct_worker: publish current log metadata schemas

[lukevalenta]

Addresses PVC-2929.

Summary

• replace log.v3.json with schema-compliant per-log metadata.json responses
• align log configuration with the published metadata fields and use lifecycle status to control submissions
• enforce Chrome's 3-to-12-month temporal interval for production logs at build time
• publish a filtered operator-list.json, covered by internal dev-log fixtures
• remove retired Raio, cftest, and pre-2026h2 dev-log configurations; production log configs will be maintained in the internal deployment repository
• update integration coverage and metadata consumers

Testing

• cargo clippy --workspace --all-targets -- -Dwarnings -Dclippy::pedantic
• cargo test
• cargo fmt --all --check
• cargo shear
• BASE_URL=http://localhost:18790 cargo test -p integration_tests --test static_ct_api