ci: turn on pre-commit checks for fresh code

Enable static code checks in the CI pipeline for new code changes.

Closes #TNTP-2939

Author: dmyger

.github/actions/static-code-check/action.yml

@@ -25,13 +25,12 @@ runs:
         echo "Found base branch with hash: '${HASH}'"
         echo "BASE_BRANCH=${HASH}" >> ${GITHUB_ENV}
 
-    # FIXME: Enable golangci-lint-diff after PR #1173 is merged.
-    # - name: pre-commit checks (diff)
-    #   uses: pre-commit/[email protected]
-    #   env:
-    #     SKIP: golangci-lint-full
-    #   with:
-    #     extra_args: --all-files --from-ref=${{ env.BASE_BRANCH }} --to-ref=HEAD --hook-stage=manual
+    - name: pre-commit checks (diff)
+      uses: pre-commit/[email protected]
+      env:
+        SKIP: golangci-lint-full
+      with:
+        extra_args: --all-files --from-ref=${{ env.BASE_BRANCH }} --to-ref=HEAD --hook-stage=manual
 
     - name: pre-commit checks (full)
       uses: pre-commit/[email protected]

.pre-commit-config.yaml

@@ -117,7 +117,7 @@ repos:
         pass_filenames: false
         always_run: true
         entry: >-
-          bash -c "golangci-lint run --new-from-rev=${GITHUB_BASE_REF:-master}
+          bash -c "golangci-lint run --new-from-rev=${BASE_BRANCH:-master}
           --config=golint-precommit.yml --allow-parallel-runners"
         additional_dependencies:
           - github.com/golangci/golangci-lint/v2/cmd/[email protected]