🧪 test: remove hardcoded @wip and update tag logic

- Remove @wip from default tag filters in all test suites
- Update features/bdd_test.go to support GODOG_TAGS override
- Move @wip tag from passing scenario to @todo scenario
- Maintain tag override functionality via GODOG_TAGS environment variable
- Update documentation to reflect new default behavior

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>

scripts/test-feature.sh

@@ -110,7 +110,7 @@ run_feature_tests() {
     
     # Run tests with proper coverage measurement and tag exclusion
     set +e
-    test_output=$(go test ./features/${FEATURE}/... -tags=~@flaky,~@todo,~@skip,@wip -v -cover -coverpkg=./... -coverprofile=coverage-${FEATURE}.out 2>&1)
+    test_output=$(go test ./features/${FEATURE}/... -tags=~@flaky,~@todo,~@skip -v -cover -coverpkg=./... -coverprofile=coverage-${FEATURE}.out 2>&1)
     test_exit_code=$?
     set -e