docs: finalize v0.19.0 release evidence

Author: codejunkie99

docs/releases/v0.19.0.md

@@ -38,8 +38,20 @@ starting another.
 
 ## Verification and attribution
 
-The release is covered by the focused loop, integration, and legacy-hook suites;
-the final release commit records the fresh full-suite command and count. The
-loop design was informed by public loop-engineering discussions about bounded
-feedback, verifier gates, resumability, and stagnation breakers. This project
-implements its own Python standard-library contracts and does not copy code.
+Fresh verification evidence before tagging:
+
+- `python3 -m pytest`: **166 passed**.
+- `python3 -m harness_manager.cli loop validate --target . --json`: valid
+  `ci-sweeper` L2 contract.
+- `python3 -m harness_manager.cli loop audit --target . --json`: valid audit,
+  with zero real run evidence in the source checkout as expected.
+- `./install.sh loop validate --target .`: valid text dispatch.
+- Fake-harness smoke: two-attempt completion, cleanup exit code 0, and the
+  active checkout remained unchanged.
+- The before/after `git status --porcelain` snapshots around the full suite
+  were identical; the Claude hook suite ran against a session temp copy.
+
+The loop design was informed by public loop-engineering discussions about
+bounded feedback, verifier gates, resumability, and stagnation breakers. This
+project implements its own Python standard-library contracts and does not copy
+code.