refactor(php-shim): introduce PhpClass for reporting PHP class names

Rust has no runtime class name, so `Command::get_class` existed purely to
let each command hand back its PHP class name, supplied through the
two-argument variant of `delegate_command_trait_impls_to_inner!` at the
impl site. Replace it with a general `PhpClass` trait plus an
`impl_php_class!` macro, so the name is stated once next to the type
definition and the mechanism is reusable outside commands.

`Command` gains `PhpClass` as a supertrait and drops `get_class`, and
`VcsDriverKind`'s hand-rolled `php_class_name` table moves onto the trait.
Behavior is unchanged: the same class-name strings are reported, and the
base command state still panics when asked for a name it cannot supply.

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

1 files changed, 6 insertions, 6 deletions

diff --git a/crates/shirabe/src/command/diagnose_command.rs b/crates/shirabe/src/command/diagnose_command.rs
index 047b8377..1674e10e 100644
--- a/crates/shirabe/src/command/diagnose_command.rs
+++ b/crates/shirabe/src/command/diagnose_command.rs
@@ -40,8 +40,9 @@ use shirabe_external_packages::symfony::console::output::OutputInterface;
 use shirabe_external_packages::symfony::process::ExecutableFinder;
 use shirabe_php_shim::{
     InvalidArgumentException, PHP_EOL, PhpMixed, disk_free_space, file_exists, filter_var_boolean,
-    get_class_err, hash, implode, is_array, is_string, php_regex, rtrim, str_contains, str_replace,
-    str_starts_with, strpos, strstr, strstr3, strtolower, trim, version_compare,
+    get_class_err, hash, impl_php_class, implode, is_array, is_string, php_regex, rtrim,
+    str_contains, str_replace, str_starts_with, strpos, strstr, strstr3, strtolower, trim,
+    version_compare,
 };
 
 #[derive(Debug)]
@@ -55,6 +56,8 @@ pub struct DiagnoseCommand {
     pub(crate) exit_code: std::cell::Cell<i64>,
 }
 
+impl_php_class!(DiagnoseCommand, r"Composer\Command\DiagnoseCommand");
+
 impl Default for DiagnoseCommand {
     fn default() -> Self {
         Self::new()
@@ -452,10 +455,7 @@ impl Command for DiagnoseCommand {
         crate::command::base_command::base_command_complete(self, input, suggestions)
     }
 
-    shirabe_external_packages::delegate_command_trait_impls_to_inner!(
-        base_command_data,
-        "Composer\\Command\\DiagnoseCommand"
-    );
+    shirabe_external_packages::delegate_command_trait_impls_to_inner!(base_command_data);
 }
 
 impl BaseCommand for DiagnoseCommand {