Several tests pass in isolation but are flaky in a full suite run because earlier tests leak state (CSRs / current-state entities) that later tests don't expect. - **033_01_02** — an `exclusive`-mode CSR conflict check trips on a CSR left over from a previous test (broker correctly 409s). Add a `Test Teardown` that deletes the test's own CSR. - **047_07_01/047_07_02** — pass alone; flake in-suite on leftover subscription/CSR state. - **D001_02_inc / D001_03_03_inc / D011_02_inc** — flake on leftover `Vehicle` entities in current state. Fix wanted: per-test teardown of the entities/CSRs each test creates, so order-independence holds.