fix(php-shim): fail RecursiveIteratorFileInfo::get_size on a failed stat

This is the type Filesystem::directory_size() actually iterates, and it
swallowed a failed stat as 0 the same way. PHP's iterator yields
\SplFileInfo there, so raise the same \RuntimeException it would.

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

2 files changed, 10 insertions, 5 deletions

diff --git a/crates/shirabe-php-shim/src/fs.rs b/crates/shirabe-php-shim/src/fs.rs
index 0006020a..26ea1fdf 100644
--- a/crates/shirabe-php-shim/src/fs.rs
+++ b/crates/shirabe-php-shim/src/fs.rs
@@ -189,10 +189,15 @@ impl RecursiveIteratorFileInfo {
         self.path.to_string_lossy().into_owned()
     }
 
-    pub fn get_size(&self) -> i64 {
-        std::fs::metadata(&self.path)
-            .map(|m| m.len() as i64)
-            .unwrap_or(0)
+    pub fn get_size(&self) -> anyhow::Result<i64> {
+        match filesize(&self.path) {
+            Some(size) => Ok(size),
+            None => Err(crate::RuntimeException::new(format!(
+                "SplFileInfo::getSize(): stat failed for {}",
+                self.path.display()
+            ))
+            .into()),
+        }
     }
 
     fn sub_pathname(&self) -> String {
diff --git a/crates/shirabe/src/util/filesystem.rs b/crates/shirabe/src/util/filesystem.rs
index 44dddb8c..1a9ab703 100644
--- a/crates/shirabe/src/util/filesystem.rs
+++ b/crates/shirabe/src/util/filesystem.rs
@@ -856,7 +856,7 @@ impl Filesystem {
         let mut size: i64 = 0;
         for file in &ri {
             if file.is_file() {
-                size += file.get_size();
+                size += file.get_size()?;
             }
         }