fix(php-shim): use PhpMixed::to_bool() for PHP truthy casts

Several call sites coerced PhpMixed to bool via `.as_bool()` (which
only matches a literal Bool variant) where the corresponding PHP code
does a plain `(bool)` cast or truthy check (isset()/array_key_exists()
+ implicit bool conversion). This silently dropped truthy non-bool
values (e.g. String("true"), String("1"), Int(1)) to their unwrap_or
default instead of PHP's actual truthy result. Switched these sites to
PhpMixed::to_bool(), which implements PHP's full truthy-cast rules.

1 files changed, 1 insertions, 1 deletions

diff --git a/crates/shirabe/src/downloader/path_downloader.rs b/crates/shirabe/src/downloader/path_downloader.rs
index eac5a859..d6c5fee7 100644
--- a/crates/shirabe/src/downloader/path_downloader.rs
+++ b/crates/shirabe/src/downloader/path_downloader.rs
@@ -131,7 +131,7 @@ impl PathDownloader {
         let mut allowed_strategies = vec![Self::STRATEGY_SYMLINK, Self::STRATEGY_MIRROR];
 
         let mirror_path_repos = Platform::get_env("COMPOSER_MIRROR_PATH_REPOS");
-        if mirror_path_repos.is_some_and(|v| !v.is_empty()) {
+        if mirror_path_repos.is_some_and(|v| PhpMixed::String(v).to_bool()) {
             current_strategy = Self::STRATEGY_MIRROR;
         }