fix(json): propagate JsonFile::encode errors instead of unwrapping

PHP's JsonFile::encode throws a RuntimeException when json_encode fails; the
port swallowed that into an .unwrap() marked TODO(phase-c). Return
anyhow::Result from encode/encode_with_options and propagate at every call
site (print_table and list_repositories become Result-returning to carry it).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/crates/shirabe/src/repository/composer_repository.rs b/crates/shirabe/src/repository/composer_repository.rs
index 015a278e..c15c6e12 100644
--- a/crates/shirabe/src/repository/composer_repository.rs
+++ b/crates/shirabe/src/repository/composer_repository.rs
@@ -2874,7 +2874,7 @@ impl ComposerRepository {
                                 .map(|(k, v)| (k.clone(), v.clone()))
                                 .collect(),
                         );
-                        json = JsonFile::encode_with_options(&as_mixed, JsonEncodeOptions::none());
+                        json = JsonFile::encode_with_options(&as_mixed, JsonEncodeOptions::none())?;
                     }
                     self.cache.borrow_mut().write(ck, &json);
                 }
@@ -3054,7 +3054,7 @@ impl ComposerRepository {
                 data.insert("last-modified".to_string(), PhpMixed::String(lmd.clone()));
                 let as_mixed =
                     PhpMixed::Array(data.iter().map(|(k, v)| (k.clone(), v.clone())).collect());
-                json = JsonFile::encode_with_options(&as_mixed, JsonEncodeOptions::none());
+                json = JsonFile::encode_with_options(&as_mixed, JsonEncodeOptions::none())?;
             }
             if !self.cache.borrow().is_read_only() {
                 self.cache.borrow_mut().write(cache_key, &json);
@@ -3229,7 +3229,7 @@ impl ComposerRepository {
                     pretty_print: false,
                     ..Default::default()
                 },
-            );
+            )?;
         }
         if !self.cache.borrow().is_read_only() {
             self.cache.borrow_mut().write(cache_key, &json);