refactor(php-shim): split json_decode into assoc and obj variants

The assoc flag was always a literal at every call site, so the boolean
carried no information the function name could not. json_decode_assoc
and json_decode_obj make the resulting PhpMixed shape visible at the
call site.

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

1 files changed, 2 insertions, 2 deletions

diff --git a/crates/shirabe/src/command/package_discovery_trait.rs b/crates/shirabe/src/command/package_discovery_trait.rs
index b68be252..88c90a5a 100644
--- a/crates/shirabe/src/command/package_discovery_trait.rs
+++ b/crates/shirabe/src/command/package_discovery_trait.rs
@@ -24,7 +24,7 @@ use shirabe_php_shim::Catch as _;
 use shirabe_php_shim::{
     Exception, InvalidArgumentException, LogicException, PHP_EOL, PhpMixed, array_keys,
     array_slice, asort, explode, file_get_contents, implode, in_array_strict, is_array, is_file,
-    is_numeric, json_decode, levenshtein, php_regex, strlen, strpos, trim,
+    is_numeric, json_decode_assoc, levenshtein, php_regex, strlen, strpos, trim,
 };
 use shirabe_symfony_console::input::InputInterface;
 use shirabe_symfony_console::output::OutputInterface;
@@ -113,7 +113,7 @@ pub trait PackageDiscoveryTrait: BaseCommand {
         let file = Factory::get_composer_file().unwrap_or_default();
         if is_file(&file) && Filesystem::is_readable(&file) {
             let contents = file_get_contents(&file).unwrap_or_default();
-            let composer = json_decode(&contents, true).unwrap_or(PhpMixed::Null);
+            let composer = json_decode_assoc(&contents).unwrap_or(PhpMixed::Null);
             if is_array(&composer)
                 && let Some(arr) = composer.as_array()
                 && let Some(ms) = arr.get("minimum-stability")