fix(input): thread a typed InputValue through the input layer

Options and arguments were stored and passed as PhpMixed even though
Symfony only ever puts a string, a bool, a list of strings or null in
one. get_option already narrowed to InputOptionValue at the boundary;
this widens that enum into InputValue and pushes it through
InputInterface, InputOption/InputArgument defaults, the Input storage,
ArgvInput/ArrayInput/StringInput/CompletionInput, Command::add_option
and add_argument, and the Composer-side wrappers.

Two neighbouring string|int unions get types of their own:
InputDefinition::{get_argument,has_argument} take an ArgumentName, and
ArrayInput keys its parameters by ParameterName. has_parameter_option
and get_parameter_option take the values they look for as &[&str],
which is what PHP's `(array) $values` cast produced anyway.

Two behaviours change along the way. Input::set_option on a negated
option now negates with PHP's loose bool cast rather than treating a
non-bool as false, matching `!$value`. ArrayInput::parse now resolves
an integer key to an argument position instead of looking up an
argument literally named "0".

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

1 files changed, 2 insertions, 6 deletions

diff --git a/crates/shirabe/src/command/script_alias_command.rs b/crates/shirabe/src/command/script_alias_command.rs
index 713947f4..32d32634 100644
--- a/crates/shirabe/src/command/script_alias_command.rs
+++ b/crates/shirabe/src/command/script_alias_command.rs
@@ -144,12 +144,8 @@ impl Command for ScriptAliasCommand {
 
         let args_value: Vec<String> = args
             .get("args")
-            .and_then(|v| v.as_list())
-            .map(|l| {
-                l.iter()
-                    .filter_map(|v| v.as_string().map(|s| s.to_string()))
-                    .collect()
-            })
+            .and_then(|v| v.as_array())
+            .map(<[String]>::to_vec)
             .unwrap_or_default();
 
         dispatcher