refactor(php-shim): take filesystem paths as impl AsRef<Path>

The shim's filesystem entry points took `&str` even though each one resolves
to a local path through `std::fs` or a syscall, so callers holding a `PathBuf`
had to stringify it at the call site. They now take `impl AsRef<Path>`, the
form `file_exists`, `is_dir`, `unlink` and the rest of the already-converted
set use.

`Phar`, `PharData` and `ZipArchive` keep their archive path as a `PathBuf`.
`PharData::compress` names the compressed sibling by appending the suffix to
the file name rather than formatting the path into a `String`.

Arguments PHP resolves through a stream wrapper (`fopen`, `file_put_contents`,
`include`) still take `&str`, as do the byte-string operations (`dirname`,
`basename`, `pathinfo`) and archive-internal entry names, which are `/`-joined
logical names rather than OS paths.

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

3 files changed, 10 insertions, 10 deletions

diff --git a/crates/shirabe/src/util/filesystem.rs b/crates/shirabe/src/util/filesystem.rs
index 51885cc3..daf26e22 100644
--- a/crates/shirabe/src/util/filesystem.rs
+++ b/crates/shirabe/src/util/filesystem.rs
@@ -499,7 +499,7 @@ impl Filesystem {
             if file.is_dir() {
                 self.ensure_directory_exists(&target_path)?;
             } else {
-                result = result && copy(&file.get_pathname(), &target_path);
+                result = result && copy(file.get_pathname(), &target_path);
             }
         }
 
@@ -944,7 +944,7 @@ impl Filesystem {
         let cwd = Platform::get_cwd(false).unwrap_or_default();
 
         let relative_path = self.find_shortest_path(link, target, false, false);
-        chdir(&dirname(link));
+        chdir(dirname(link));
         let result = symlink(&relative_path, link);
 
         chdir(&cwd);
diff --git a/crates/shirabe/src/util/http/curl_downloader.rs b/crates/shirabe/src/util/http/curl_downloader.rs
index 89e9661e..1207dea0 100644
--- a/crates/shirabe/src/util/http/curl_downloader.rs
+++ b/crates/shirabe/src/util/http/curl_downloader.rs
@@ -296,7 +296,7 @@ impl CurlDownloader {
                         crate::io::DEBUG,
                     );
                     if let Some(filename) = filename {
-                        unlink_silent(&format!("{}~", filename));
+                        unlink_silent(format!("{}~", filename));
                     }
                     return Ok(Decision::Retry {
                         url: url.to_string(),
@@ -305,7 +305,7 @@ impl CurlDownloader {
                 }
 
                 if let Some(filename) = filename {
-                    unlink_silent(&format!("{}~", filename));
+                    unlink_silent(format!("{}~", filename));
                 }
                 // PHP throws a MaxFileSizeExceededException (a TransportException subclass) with
                 // the raw "Maximum allowed download size reached..." message verbatim rather than
@@ -368,7 +368,7 @@ impl CurlDownloader {
                     .unwrap_or(0);
                 attributes.insert("retries".to_string(), PhpMixed::Int(retries + 1));
                 if let Some(filename) = filename {
-                    unlink_silent(&format!("{}~", filename));
+                    unlink_silent(format!("{}~", filename));
                 }
                 return Ok(Decision::Retry {
                     url: url.to_string(),
@@ -392,7 +392,7 @@ impl CurlDownloader {
                 Ok(location) if !location.is_empty() => {
                     attributes.insert("redirects".to_string(), PhpMixed::Int(redirects + 1));
                     if let Some(filename) = filename {
-                        unlink_silent(&format!("{}~", filename));
+                        unlink_silent(format!("{}~", filename));
                     }
                     return Ok(Decision::Retry {
                         url: location,
@@ -402,7 +402,7 @@ impl CurlDownloader {
                 Ok(_) => {}
                 Err(e) => {
                     if let Some(filename) = filename {
-                        unlink_silent(&format!("{}~", filename));
+                        unlink_silent(format!("{}~", filename));
                     }
                     return Ok(Decision::Failed(e));
                 }
@@ -440,7 +440,7 @@ impl CurlDownloader {
                 );
                 attributes.insert("retries".to_string(), PhpMixed::Int(retries + 1));
                 if let Some(filename) = filename {
-                    unlink_silent(&format!("{}~", filename));
+                    unlink_silent(format!("{}~", filename));
                 }
                 return Ok(Decision::Retry {
                     url: url.to_string(),
@@ -827,7 +827,7 @@ impl CurlDownloader {
         error_message: &str,
     ) -> TransportException {
         if let Some(filename) = filename {
-            unlink_silent(&format!("{}~", filename));
+            unlink_silent(format!("{}~", filename));
         }
 
         let mut details = String::new();
diff --git a/crates/shirabe/src/util/tar.rs b/crates/shirabe/src/util/tar.rs
index 792d1c4f..f5b0ebbe 100644
--- a/crates/shirabe/src/util/tar.rs
+++ b/crates/shirabe/src/util/tar.rs
@@ -7,7 +7,7 @@ pub struct Tar;
 
 impl Tar {
     pub fn get_composer_json(path_to_archive: &str) -> anyhow::Result<Option<String>> {
-        let phar = PharData::new(path_to_archive.to_string())?;
+        let phar = PharData::new(path_to_archive)?;
 
         if !phar.valid() {
             return Ok(None);