test: add tests and refactor wecker.py state machine for testability

uv.lock

@@ -280,6 +280,18 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/e5/35/f8b19922b6a25bc0880171a2f1a003eaeb93657475193ab516fd87cac9da/pytest_asyncio-1.3.0-py3-none-any.whl", hash = "sha256:611e26147c7f77640e6d0a92a38ed17c3e9848063698d5c93d5aa7aa11cebff5", size = 15075, upload-time = "2025-11-10T16:07:45.537Z" },
 ]
 
+[[package]]
+name = "pytest-mock"
+version = "3.15.1"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "pytest" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/68/14/eb014d26be205d38ad5ad20d9a80f7d201472e08167f0bb4361e251084a9/pytest_mock-3.15.1.tar.gz", hash = "sha256:1849a238f6f396da19762269de72cb1814ab44416fa73a8686deac10b0d87a0f", size = 34036, upload-time = "2025-09-16T16:37:27.081Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/5a/cc/06253936f4a7fa2e0f48dfe6d851d9c56df896a9ab09ac019d70b760619c/pytest_mock-3.15.1-py3-none-any.whl", hash = "sha256:0a25e2eb88fe5168d535041d09a4529a188176ae608a6d249ee65abc0949630d", size = 10095, upload-time = "2025-09-16T16:37:25.734Z" },
+]
+
 [[package]]
 name = "python-crontab"
 version = "3.3.0"
@@ -423,6 +435,7 @@ dev = [
     { name = "httpx" },
     { name = "pytest" },
     { name = "pytest-asyncio" },
+    { name = "pytest-mock" },
     { name = "ruff" },
 ]
 
@@ -440,5 +453,6 @@ dev = [
     { name = "httpx", specifier = ">=0.28.1" },
     { name = "pytest", specifier = ">=9.0.3" },
     { name = "pytest-asyncio", specifier = ">=1.3.0" },
+    { name = "pytest-mock", specifier = ">=3.15.1" },
     { name = "ruff", specifier = ">=0.15.12" },
 ]