[sean0407]

Summary

• Make AlwaysListMatcher match every value, as its documented contract requires.
• Add a regression test that builds and executes num in $numbers through the public API.

Evidence

• Before the fix, the regression test failed: the filter returned Ok(false) instead of Ok(true).
• Checks run: cargo test --offline --locked -p wirefilter-engine (152 unit tests and 2 doctests passed); git diff --check passed; patch policy accepted 2 files and 18 changed lines with no binary changes.

Fixes #190

Merge Danger

Door: two-way

Blast Radius: localized