test(core): cfg Windows rerun suppression; ci: --no-fail-fast tests

shell_semantics asserted pipeline_rerun_command is Some, but the bash
pipefail suggestion is intentionally suppressed on Windows. Run CI tests
with --no-fail-fast so one failing target no longer hides the rest of
the platform's failures behind a fresh run.

Author: AdityaVG13

.github/workflows/ci.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Rust format
         run: cargo fmt --all -- --check
       - name: Rust tests
-        run: cargo test --workspace --locked
+        run: cargo test --workspace --locked --no-fail-fast
       - name: Rust clippy
         run: cargo clippy --workspace --all-targets --locked -- -D warnings
       - name: Rust shell matrix

crates/tokenzero-core/tests/shell_semantics.rs

@@ -408,8 +408,10 @@ fn expected_false_pipeline_segments_do_not_trigger_masking_warnings() {
                 .is_some_and(|warning| warning.contains("mask")),
             "{command}: {rendered:?}"
         );
-        assert!(
+        // The bash pipefail rerun suggestion is suppressed on Windows.
+        assert_eq!(
             rendered.command_status.pipeline_rerun_command.is_some(),
+            !cfg!(windows),
             "{command}: {rendered:?}"
         );
     }