refactor(pi-shell): improved test readability and formatting

- Updated line wrapping in module documentation and test blocks for consistent style.
- Adjusted variable assignment formatting in the segmented chain test to improve readability.

crates/pi-shell/src/minimizer/plan.rs

@@ -226,12 +226,18 @@ fn io_redirect_is_safe(io: &IoRedirect) -> bool {
 /// [`reconstruction_reparses_to_same_shape`] before any segment is executed.
 fn simple_command_is_safe(simple: &SimpleCommand) -> bool {
 	if let Some(prefix) = simple.prefix.as_ref()
-		&& prefix.0.iter().any(|item| !command_prefix_or_suffix_item_is_safe(item))
+		&& prefix
+			.0
+			.iter()
+			.any(|item| !command_prefix_or_suffix_item_is_safe(item))
 	{
 		return false;
 	}
 	if let Some(suffix) = simple.suffix.as_ref()
-		&& suffix.0.iter().any(|item| !command_prefix_or_suffix_item_is_safe(item))
+		&& suffix
+			.0
+			.iter()
+			.any(|item| !command_prefix_or_suffix_item_is_safe(item))
 	{
 		return false;
 	}

crates/pi-shell/src/shell.rs

@@ -2266,11 +2266,12 @@ replace = [{ pattern = "^.+$", replacement = "PWD" }]
 
 	/// A segment that carries a file redirect is still segmented, and the brush
 	/// `Display` reconstruction the runner executes must round-trip through
-	/// brush's own parser **without losing the redirect**. `echo hidden >/dev/null`
-	/// suppresses its own stdout: if the reconstruction dropped the redirect,
-	/// `hidden` would leak into the captured output. Proves the reconstruction
-	/// path is semantically sound for the redirect-bearing shapes the per-stage
-	/// whitelist accepts (not just syntactically parseable).
+	/// brush's own parser **without losing the redirect**. `echo hidden
+	/// >/dev/null` suppresses its own stdout: if the reconstruction dropped the
+	/// redirect, `hidden` would leak into the captured output. Proves the
+	/// reconstruction path is semantically sound for the redirect-bearing
+	/// shapes the per-stage whitelist accepts (not just syntactically
+	/// parseable).
 	#[cfg(unix)]
 	#[tokio::test(flavor = "multi_thread")]
 	async fn segmented_chain_with_redirect_executes_correctly() {
@@ -2289,7 +2290,9 @@ replace = [{ pattern = "^.+$", replacement = "PWD" }]
 		// /dev/null, so only segment 2's output is captured.
 		assert!(!output.contains("hidden"), "redirect must suppress segment-1 stdout");
 		assert_eq!(output, "hello\n");
-		let minimized = result.minimized.expect("redirect chain should be minimized");
+		let minimized = result
+			.minimized
+			.expect("redirect chain should be minimized");
 		assert_eq!(minimized.original_text, "hello\n");
 		assert_eq!(minimized.text, "HI\n");
 		assert!(!output.contains("syntax error"));