test: add unit tests for brevity bonus and blank start linguistic match

.pre-commit-config.yaml

@@ -0,0 +1,24 @@
+repos:
+-   repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.6.0
+    hooks:
+    -   id: trailing-whitespace
+    -   id: end-of-file-fixer
+    -   id: check-yaml
+    -   id: check-added-large-files
+
+-   repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.4.1
+    hooks:
+    -   id: ruff
+        args: [ --fix ]
+    -   id: ruff-format
+
+-   repo: local
+    hooks:
+    -   id: run-tests-and-coverage
+        name: Run fast tests & check coverage drops
+        entry: ./scripts/pre_commit_tests.sh
+        language: system
+        types: [python]
+        pass_filenames: false