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>

1 files changed, 2 insertions, 2 deletions

diff --git a/crates/shirabe-php-shim/src/rar.rs b/crates/shirabe-php-shim/src/rar.rs
index 10c7e27d..475f6e1d 100644
--- a/crates/shirabe-php-shim/src/rar.rs
+++ b/crates/shirabe-php-shim/src/rar.rs
@@ -2,7 +2,7 @@
 pub struct RarEntry;
 
 impl RarEntry {
-    pub fn extract(&self, _path: &str) -> bool {
+    pub fn extract(&self, _path: impl AsRef<std::path::Path>) -> bool {
         todo!()
     }
 }
@@ -11,7 +11,7 @@ impl RarEntry {
 pub struct RarArchive;
 
 impl RarArchive {
-    pub fn open(_file: &str) -> Option<Self> {
+    pub fn open(_file: impl AsRef<std::path::Path>) -> Option<Self> {
         todo!()
     }