fix(php-rpc): unpack the runtime bundle under the cache dir

A worker whose PHP cannot read the bundle out of the executable gets it
from an unpacked copy, which went to a directory derived from
XDG_CACHE_HOME alone. That ignored COMPOSER_CACHE_DIR, COMPOSER_HOME and
the cache-dir setting, and put the files outside the directory clear-cache
and the platform conventions cover. The callers now pass Composer's
configured cache directory down to base_path().

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

1 files changed, 6 insertions, 1 deletions

diff --git a/crates/shirabe/src/plugin/plugin_manager.rs b/crates/shirabe/src/plugin/plugin_manager.rs
index 1d8e6192..75852348 100644
--- a/crates/shirabe/src/plugin/plugin_manager.rs
+++ b/crates/shirabe/src/plugin/plugin_manager.rs
@@ -405,7 +405,12 @@ impl PluginManager {
 
         // The plugin code runs in the PHP worker: load the Composer PHP runtime (contracts like
         // PluginInterface) and the reverse-RPC autoloader before touching plugin classes there.
-        EventDispatcher::ensure_composer_php_runtime()?;
+        let cache_dir = composer
+            .borrow()
+            .get_config()
+            .borrow()
+            .get_str("cache-dir")?;
+        EventDispatcher::ensure_composer_php_runtime(std::path::Path::new(&cache_dir))?;
         EventDispatcher::ensure_script_autoloader()?;
 
         if let Some(files) = map.get("files").and_then(|v| v.as_array()) {