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, 8 insertions, 8 deletions

diff --git a/crates/shirabe/src/command/about_command.rs b/crates/shirabe/src/command/about_command.rs
index 8ca44db..5306b89 100644
--- a/crates/shirabe/src/command/about_command.rs
+++ b/crates/shirabe/src/command/about_command.rs
@@ -33,7 +33,7 @@ impl Default for AboutCommand {
 
 impl AboutCommand {
     pub fn new() -> Self {
-        let mut command = AboutCommand {
+        let command = AboutCommand {
             base_command_data: BaseCommandData::new(None),
         };
         command
@@ -44,7 +44,7 @@ impl AboutCommand {
 }
 
 impl Command for AboutCommand {
-    fn configure(&mut self) -> anyhow::Result<()> {
+    fn configure(&self) -> anyhow::Result<()> {
         self.set_name("about")?;
         self.set_description("Shows a short information about Composer");
         self.set_help("<info>shirabe about</info>");
@@ -52,7 +52,7 @@ impl Command for AboutCommand {
     }
 
     fn execute(
-        &mut self,
+        &self,
         input: Rc<RefCell<dyn InputInterface>>,
         output: Rc<RefCell<dyn OutputInterface>>,
     ) -> anyhow::Result<i64> {
@@ -69,7 +69,7 @@ impl Command for AboutCommand {
     }
 
     fn initialize(
-        &mut self,
+        &self,
         input: Rc<RefCell<dyn InputInterface>>,
         output: Rc<RefCell<dyn OutputInterface>>,
     ) -> anyhow::Result<()> {
@@ -80,10 +80,10 @@ impl Command for AboutCommand {
 }
 
 impl BaseCommand for AboutCommand {
-    fn command_data_mut(
-        &mut self,
-    ) -> &mut shirabe_external_packages::symfony::console::command::command::CommandData {
-        self.base_command_data.command_data_mut()
+    fn command_data(
+        &self,
+    ) -> &shirabe_external_packages::symfony::console::command::command::CommandData {
+        self.base_command_data.command_data()
     }
 
     crate::delegate_base_command_trait_impls_to_inner!(base_command_data);