refactor(style): type SymfonyStyle messages as strings and cells

SymfonyStyle modelled PHP's string|array message parameters, its array of
listing elements and its table headers/rows as PhpMixed, then normalised
and stringified them at every entry point. Take &[String] for the message
and listing parameters, Vec<Cell>/Vec<Row> for table (matching the
horizontal_table signature) and Vec<String> for the choice options, so the
is_array/is_iterable normalisation and the php_string helper both go away.

PhpMixed stays where PHP is genuinely mixed: the question answers returned
by ask/ask_hidden/choice, their validators, choice's string|int|null
default, and the progress_iterate elements.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

1 files changed, 11 insertions, 9 deletions

diff --git a/crates/shirabe-symfony-console/src/style/style_interface.rs b/crates/shirabe-symfony-console/src/style/style_interface.rs
index 96745de1..14c7ba86 100644
--- a/crates/shirabe-symfony-console/src/style/style_interface.rs
+++ b/crates/shirabe-symfony-console/src/style/style_interface.rs
@@ -1,5 +1,7 @@
 //! ref: composer/vendor/symfony/console/Style/StyleInterface.php
 
+use crate::helper::Cell;
+use crate::helper::Row;
 use shirabe_php_shim::PhpMixed;
 
 /// Output style helpers.
@@ -11,28 +13,28 @@ pub trait StyleInterface {
     fn section(&mut self, message: &str);
 
     /// Formats a list.
-    fn listing(&mut self, elements: Vec<PhpMixed>);
+    fn listing(&mut self, elements: &[String]);
 
     /// Formats informational text.
-    fn text(&mut self, message: PhpMixed);
+    fn text(&mut self, message: &[String]);
 
     /// Formats a success result bar.
-    fn success(&mut self, message: PhpMixed);
+    fn success(&mut self, message: &[String]);
 
     /// Formats an error result bar.
-    fn error(&mut self, message: PhpMixed);
+    fn error(&mut self, message: &[String]);
 
     /// Formats an warning result bar.
-    fn warning(&mut self, message: PhpMixed);
+    fn warning(&mut self, message: &[String]);
 
     /// Formats a note admonition.
-    fn note(&mut self, message: PhpMixed);
+    fn note(&mut self, message: &[String]);
 
     /// Formats a caution admonition.
-    fn caution(&mut self, message: PhpMixed);
+    fn caution(&mut self, message: &[String]);
 
     /// Formats a table.
-    fn table(&mut self, headers: Vec<PhpMixed>, rows: Vec<PhpMixed>);
+    fn table(&mut self, headers: Vec<Cell>, rows: Vec<Row>);
 
     /// Asks a question.
     fn ask(
@@ -56,7 +58,7 @@ pub trait StyleInterface {
     fn choice(
         &mut self,
         question: &str,
-        choices: Vec<PhpMixed>,
+        choices: Vec<String>,
         default: Option<PhpMixed>,
     ) -> PhpMixed;