fix(input): return a bool|string|string[]|null enum from get_option

`InputInterface::get_option` returned `PhpMixed`, so the negation branch
of `Input::get_option` reproduced PHP's `return !$value;` as
`!value.as_bool().unwrap_or(false)`, which inverts the result for a
string value instead of leaving it `false`. It now returns
`InputOptionValue`, whose `to_bool` is PHP's truthiness cast.

The narrowing also removes the `Vec<PhpMixed>` element handling the
commands carried for array options: `as_array` hands back `&[String]`,
so the `filter_map(|v| v.as_string())` chains at eight call sites
collapse. Its other accessors keep `PhpMixed`'s names and meanings
(`is_null`, `as_bool`, `as_string`, `to_bool`), and
`From<InputOptionValue> for PhpMixed` covers the callers that feed the
value back into an `IndexMap<String, PhpMixed>` or a `PhpMixed`
parameter.

`Input` keeps its parsed options and `InputOption` its defaults as
`PhpMixed`, so `Input::get_option` is where the narrowing happens and
where a value outside the domain panics.

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

1 files changed, 3 insertions, 3 deletions

diff --git a/crates/shirabe/tests/installer_test.rs b/crates/shirabe/tests/installer_test.rs
index 05776557..4d24186f 100644
--- a/crates/shirabe/tests/installer_test.rs
+++ b/crates/shirabe/tests/installer_test.rs
@@ -52,6 +52,7 @@ use shirabe_symfony_console::command::CommandData;
 use shirabe_symfony_console::input::InputArgument;
 use shirabe_symfony_console::input::InputInterface;
 use shirabe_symfony_console::input::InputOption;
+use shirabe_symfony_console::input::InputOptionValue;
 use shirabe_symfony_console::input::StringInput;
 use shirabe_symfony_console::output::StreamOutput;
 use shirabe_symfony_console::output::{OutputInterface, VERBOSITY_NORMAL};
@@ -828,10 +829,9 @@ fn ignore_platform_reqs_value(input: &dyn InputInterface) -> PhpMixed {
     }
     let list = input
         .get_option("ignore-platform-req")
-        .unwrap_or(PhpMixed::Bool(false));
+        .unwrap_or(InputOptionValue::Bool(false));
     match &list {
-        PhpMixed::List(items) if !items.is_empty() => list,
-        PhpMixed::Array(map) if !map.is_empty() => list,
+        InputOptionValue::Array(items) if !items.is_empty() => list.into(),
         _ => PhpMixed::Bool(false),
     }
 }