refactor(php-shim): replace literal sprintf calls with format!

Convert every sprintf() call with a compile-time literal format string to
format!, implementing Display for PhpMixed (delegating to php_to_string) so
PhpMixed values render with PHP string semantics through {}. Also merge the
format!-wrapped and conditional-literal dynamic sites into single format!
calls. Genuinely runtime format strings (table styles, configurable error
messages, command synopsis, progress-bar modifiers, regex-built messages)
still go through sprintf.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

1 files changed, 5 insertions, 7 deletions

diff --git a/crates/shirabe/src/io/console_io.rs b/crates/shirabe/src/io/console_io.rs
index 2371dfa..b2e0bb5 100644
--- a/crates/shirabe/src/io/console_io.rs
+++ b/crates/shirabe/src/io/console_io.rs
@@ -109,13 +109,11 @@ impl ConsoleIO {
             let mapped: Vec<String> = arr
                 .into_iter()
                 .map(|message| {
-                    sprintf(
-                        "[%.1fMiB/%.2fs] %s",
-                        &[
-                            PhpMixed::Float(memory_usage),
-                            PhpMixed::Float(time_spent),
-                            PhpMixed::String(message),
-                        ],
+                    format!(
+                        "[{:.1}MiB/{:.2}s] {}",
+                        memory_usage,
+                        time_spent,
+                        PhpMixed::String(message),
                     )
                 })
                 .collect();