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, 1 insertions, 1 deletions

diff --git a/crates/shirabe/src/command/init_command.rs b/crates/shirabe/src/command/init_command.rs
index e401534..a46b6ca 100644
--- a/crates/shirabe/src/command/init_command.rs
+++ b/crates/shirabe/src/command/init_command.rs
@@ -301,7 +301,7 @@ impl InitCommand {
             .into_iter()
             .map(|(k, v)| (k, Box::new(v)))
             .collect();
-        let json = JsonFile::encode(&PhpMixed::Array(options_for_encode.clone()), 448);
+        let json = JsonFile::encode(&PhpMixed::Array(options_for_encode.clone()));
 
         if input.is_interactive() {
             io.write_error3(&format!("\n{}\n", json), true, io_interface::NORMAL);