fix(console): make Command/BaseCommand methods take &self

The Command trait and Composer's BaseCommand took &mut self, so dispatch
held a borrow_mut on the command's RefCell for the whole call. A command
re-entering itself (e.g. the help command describing itself) then panicked
with "RefCell already borrowed".

All Command/BaseCommand methods now take &self and the command state is
interior-mutable (Cell/RefCell). Shared borrows coexist, so re-entrant
describe paths no longer conflict. Getters that returned references now
return Ref guards; the descriptor describe_* methods take &dyn Command;
mixin accessors return Ref/RefMut.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/crates/shirabe-external-packages/src/symfony/console/command/list_command.rs b/crates/shirabe-external-packages/src/symfony/console/command/list_command.rs
index 1d467ae..4f6e923 100644
--- a/crates/shirabe-external-packages/src/symfony/console/command/list_command.rs
+++ b/crates/shirabe-external-packages/src/symfony/console/command/list_command.rs
@@ -46,7 +46,7 @@ impl Default for ListCommand {
 
 impl ListCommand {
     pub fn new() -> Self {
-        let mut command = ListCommand {
+        let command = ListCommand {
             inner: CommandData::new(None),
         };
         command
@@ -85,7 +85,7 @@ impl ListCommand {
 }
 
 impl Command for ListCommand {
-    fn configure(&mut self) -> anyhow::Result<()> {
+    fn configure(&self) -> anyhow::Result<()> {
         self.inner.set_name("list")?;
         self.inner.set_definition(SetDefinitionArg::Array(vec![
             DefinitionItem::InputArgument(InputArgument::new(
@@ -139,7 +139,7 @@ impl Command for ListCommand {
     }
 
     fn execute(
-        &mut self,
+        &self,
         input: Rc<RefCell<dyn InputInterface>>,
         output: Rc<RefCell<dyn OutputInterface>>,
     ) -> anyhow::Result<i64> {