Task 10 — RelevanceScorer in news-server: FTS5 BM25 + persisted Naive Bayes + blocklist veto
Workspace: /home/connor/docs/projects/news
Date: 2026-09-01

Files created/modified:
- crates/news-core/src/scoring/relevance.rs (+ Serialize, Deserialize on NaiveBayesModel)
- crates/news-core/src/clustering.rs (pub fn tokenize; similarity unchanged)
- crates/news-server/Cargo.toml (+ news-store, sqlx, serde_json deps; tokio + pretty_assertions dev-deps)
- crates/news-server/src/error.rs (new)
- crates/news-server/src/lib.rs (new)
- crates/news-server/src/scoring.rs (new)
- Cargo.toml (+ news-store workspace dependency)

================================================================================
$ cargo test -p news-server
================================================================================
running 3 tests
test scoring::matching_item_scores_higher_than_non_matching ... ok
test scoring::trained_model_persists_and_reloads_with_same_total_samples ... ok
test scoring::blocklist_veto_returns_neg_infinity ... ok

test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s

     Running unittests src/main.rs (target/debug/deps/news_server-cd986f0fa7a0cd55)

running 0 tests

test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s

   Doc-tests news_server

running 0 tests

test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s

================================================================================
$ cargo fmt --all --check
================================================================================
(no output)

exit status: 0

================================================================================
$ cargo clippy --workspace --all-targets -- -D warnings
================================================================================
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.79s

exit status: 0

================================================================================
$ cargo test --workspace
================================================================================
running 18 tests
...
test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s

   Doc-tests news_core
...
running 4 tests
...
test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s

   Doc-tests news_ingest
...
running 3 tests
...
test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s

   Doc-tests news_server
...
running 13 tests
...
test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s

   Doc-tests news_store
...
test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s

================================================================================
Summary: all commands green. Workspace test count: 38 (news-core 18, news-store 13,
news-ingest 4, news-server 3).