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/search_command.rs b/crates/shirabe/src/command/search_command.rs
index 5d6a31b..2c5d27d 100644
--- a/crates/shirabe/src/command/search_command.rs
+++ b/crates/shirabe/src/command/search_command.rs
@@ -182,7 +182,7 @@ impl SearchCommand {
         } else if format == "json" {
             // TODO(phase-b): JsonFile::encode takes &PhpMixed; convert Vec<SearchResult> into PhpMixed
             let _ = &results;
-            io.write(&JsonFile::encode(&PhpMixed::Null, 448));
+            io.write(&JsonFile::encode(&PhpMixed::Null));
         }
 
         Ok(0)