fix(json): let an \Error out of JsonFile::read untouched

The port's fall-through stood in for PHP's `catch (\Exception $e)`, which
does not catch an `\Error`; a TypeError reaching JsonFile::read would come
back out as a `\RuntimeException` saying the file could not be read.

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

1 files changed, 4 insertions, 2 deletions

diff --git a/crates/shirabe/src/json/json_file.rs b/crates/shirabe/src/json/json_file.rs
index da6370e4..feb72764 100644
--- a/crates/shirabe/src/json/json_file.rs
+++ b/crates/shirabe/src/json/json_file.rs
@@ -171,8 +171,6 @@ impl JsonFile {
         })() {
             Ok(j) => j,
             Err(e) => {
-                // TransportException keeps its message verbatim; any other exception is wrapped
-                // with the "Could not read" prefix.
                 if let Some(te) = e.catch::<TransportException>() {
                     let message = te.get_message().to_string();
                     return Err(RuntimeException::with_code_and_previous(
@@ -182,6 +180,10 @@ impl JsonFile {
                     )
                     .into());
                 }
+                // `catch (\Exception)` leaves an \Error to propagate.
+                if e.is_instanceof::<shirabe_php_shim::Error>() {
+                    return Err(e);
+                }
                 return Err(RuntimeException::new(format!(
                     "Could not read {}\n\n{}",
                     self.path, e