Compare Qwen cache snapshots at matching stages

docs/issue114-snapshot-zero/known-issue115-gate-failure.log

@@ -0,0 +1,12 @@
+---- dev_brain::tests::source_versions_follow_that_file_instead_of_the_whole_worktree stdout ----
+
+thread 'dev_brain::tests::source_versions_follow_that_file_instead_of_the_whole_worktree' (3812331) panicked at src/dev_brain.rs:2054:51:
+called `Result::unwrap()` on an `Err` value: "Invalid frontmatter in concepts/answer.md: invalid type: floating point `5568000000.0`, expected a string"
+
+
+failures:
+    dev_brain::tests::source_versions_follow_that_file_instead_of_the_whole_worktree
+
+test result: FAILED. 312 passed; 1 failed; 237 ignored; 0 measured; 0 filtered out; finished in 5.62s
+
+error: test failed, to rerun pass `--bin ds4-server`