v0.31.8

AGENTS.md

@@ -2,7 +2,7 @@
 
 Read README.md, ROADMAP.md and docs/TEST_REPORT.md before making changes.
 The project name is RustProxy; the Cargo package/binary remains `rust-proxy` for
-compatibility. Current source version: 0.31.7.
+compatibility. Current source version: 0.31.8.
 
 ## Delivery
 
@@ -36,6 +36,10 @@ SQLite write. Invalid updates leave the old snapshot active.
 
 ## Verification
 
+Keep production Rust source files within 500 lines. Rust unit and integration
+**test files are exempt** from this limit: do not create numbered `part_XX.rs`
+fragments to satisfy source-size checks. Consolidate coherent test suites in
+`tests.rs` and preserve the existing test cases.
 Run `./dev.sh check` and `./dev.sh test` when Rust is available. Run the SQL and upgrade
 scripts even when it is not. UI tests use a simulated API; the Python protocol-peer
 self-test is not a test of RustProxy. Record these distinctions accurately.