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, 6 insertions, 9 deletions

diff --git a/crates/shirabe/src/command/create_project_command.rs b/crates/shirabe/src/command/create_project_command.rs
index b2842d9d..eb23ffff 100644
--- a/crates/shirabe/src/command/create_project_command.rs
+++ b/crates/shirabe/src/command/create_project_command.rs
@@ -926,15 +926,12 @@ impl Command for CreateProjectCommand {
 
         let repository_opt = input.borrow().get_option("repository")?;
         let repository_url_opt = input.borrow().get_option("repository-url")?;
-        let repositories = if repository_opt
-            .as_list()
-            .map(|l| !l.is_empty())
-            .unwrap_or(false)
-        {
-            Some(repository_opt)
-        } else {
-            Some(repository_url_opt)
-        };
+        let repositories: Option<PhpMixed> =
+            if repository_opt.as_array().is_some_and(|l| !l.is_empty()) {
+                Some(repository_opt.into())
+            } else {
+                Some(repository_url_opt.into())
+            };
 
         self.install_project(
             io,