feat(plugin): discover and list plugin-provided commands

Port Application::getPluginCommands: resolve the local composer with
plugins force-enabled, fall back to Factory::createGlobal, and collect
commands from CommandProvider capability adapters. PhpCommandProxy now
mirrors name/description/aliases/hidden over RPC so `list` output
matches upstream; input definitions remain TODO(plugin).

PhpClass::php_class_name returns an owned String because PHP-backed
proxies only know their class at runtime (the override-skip warning
prints get_class). CommandProvider::getCommands hands out shared
Rc<RefCell> handles since the commands are stored in the application.

Factory::createGlobal now propagates createConfig errors instead of
swallowing them, and Application::getComposer only catches the
exception classes upstream catches, so a ParsingException reaches
doRun's GithubActionError path as in Composer.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/crates/shirabe/src/repository/vcs_repository.rs b/crates/shirabe/src/repository/vcs_repository.rs
index dd7b4b06..7ce00ce5 100644
--- a/crates/shirabe/src/repository/vcs_repository.rs
+++ b/crates/shirabe/src/repository/vcs_repository.rs
@@ -178,7 +178,7 @@ impl VcsRepository {
                 .iter()
                 .find(|(_, v)| **v == kind)
                 .map(|(name, _)| name.clone())
-                .unwrap_or_else(|| kind.php_class_name().to_string()),
+                .unwrap_or_else(|| kind.php_class_name()),
             None => String::new(),
         };