fix: run testkit sync before flagd-core tests

flagd-core e2e tests depend on testkit feature files which are
generated from the test-harness submodule, not checked in.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Signed-off-by: Simon Schrottner <simon.schrottner@gmail.com>

Author: aepfli

tools/openfeature-flagd-core/pyproject.toml

@@ -72,8 +72,9 @@ addopts = "-m 'not fractional-v1'"
 omit = ["tests/**"]
 
 [tool.poe.tasks]
-test = "pytest tests"
-test-cov = "coverage run -m pytest tests"
+sync-test-harness = "python ../openfeature-flagd-api-testkit/hatch_build_sync.py"
+test = ["sync-test-harness", {cmd = "pytest tests"}]
+test-cov = ["sync-test-harness", {cmd = "coverage run -m pytest tests"}]
 cov-report = "coverage xml"
 cov = [
     "test-cov",