refactor(json): model JsonFile encode/write options as a typed struct

Replace the i64 bitmask + encode_with_indent split with a JsonEncodeOptions
struct (Default = JSON_UNESCAPED_SLASHES|JSON_PRETTY_PRINT|JSON_UNESCAPED_UNICODE,
default indent). encode/write each get a default form plus an explicit
encode_with_options/write_with_options variant, mirroring PHP's optional
$options argument. write_with_options always encodes with self.indent, matching
PHP write().

Also reconcile call sites with the PHP sources: most ported sites passed 0 where
Composer omits the argument (= default flags), so JsonManipulator/ShowCommand and
JsonConfigSource now use the default options; only ComposerRepository and Locker
genuinely pass 0.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

1 files changed, 6 insertions, 9 deletions

diff --git a/crates/shirabe/src/command/licenses_command.rs b/crates/shirabe/src/command/licenses_command.rs
index ddd7d3d..81f9b67 100644
--- a/crates/shirabe/src/command/licenses_command.rs
+++ b/crates/shirabe/src/command/licenses_command.rs
@@ -247,15 +247,12 @@ impl LicensesCommand {
                             .collect(),
                     ),
                 );
-                io.write(&JsonFile::encode(
-                    &PhpMixed::Array(
-                        output_map
-                            .into_iter()
-                            .map(|(k, v)| (k, Box::new(v)))
-                            .collect(),
-                    ),
-                    448,
-                ));
+                io.write(&JsonFile::encode(&PhpMixed::Array(
+                    output_map
+                        .into_iter()
+                        .map(|(k, v)| (k, Box::new(v)))
+                        .collect(),
+                )));
             }
             "summary" => {
                 let mut used_licenses: IndexMap<String, i64> = IndexMap::new();