Quote revisions in Dev Brain test fixtures

docs/issue115-revision-fixture/isolated.log

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+   Compiling ds4-server v0.1.0 (/Users/gb/Projects/DS4Server)
+    Finished `test` profile [unoptimized + debuginfo] target(s) in 5.97s
+warning: the following packages contain code that will be rejected by a future version of Rust: block v0.1.6
+note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
+     Running unittests src/main.rs (target/debug/deps/ds4_server-5679c54d8848b708)
+
+running 10 tests
+test dev_brain::tests::revision_fixture_preserves_numeric_looking_strings ... ok
+test dev_brain::tests::path_confinement_and_unrelated_notes_are_preserved ... ok
+test dev_brain::tests::skill_index_migration_does_not_overwrite_an_unrelated_root_note ... ok
+test dev_brain::tests::parser_and_index_rebuild_ignore_links_in_code ... ok
+test dev_brain::tests::skill_validation_and_default_guide_restore_are_strict ... ok
+test dev_brain::tests::validation_names_every_drifted_source_and_requires_semantic_refresh ... ok
+test dev_brain::tests::source_hash_drift_excludes_page_from_authoritative_queries ... ok
+test dev_brain::tests::verified_skills_are_indexed_and_injected_on_demand ... ok
+test dev_brain::tests::validation_keeps_broken_links_editable_and_reports_provenance_errors ... ok
+test dev_brain::tests::source_versions_follow_that_file_instead_of_the_whole_worktree ... ok
+
+test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 541 filtered out; finished in 0.18s
+
+     Running unittests tools/qwen38-artifacts.rs (target/debug/deps/qwen38_artifacts-1288d410762a1a77)
+
+running 0 tests
+
+test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 4 filtered out; finished in 0.00s
+
+     Running unittests tools/test-supervisor.rs (target/debug/deps/test_supervisor-df80f419c8443a12)
+
+running 0 tests
+
+test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 4 filtered out; finished in 0.00s
+