refactor(lint): rewrite structural linters from Ruby to PHP

Fold scripts/lint and scripts/linters/*.rb into a standalone Composer
project under scripts/linters/, matching the scripts/plugin-class-classifier/
convention. Uses no external packages, only PHP + Composer autoloading.

Verified byte-for-byte identical output against the original Ruby
implementation, both on the current repo (all linters pass) and on a
synthetic fixture exercising every violation type.

Entry point moves from `scripts/lint` to `scripts/linters/lint`.

1 files changed, 0 insertions, 32 deletions

diff --git a/scripts/lint b/scripts/lint
deleted file mode 100755
index c9e33049..00000000
--- a/scripts/lint
+++ /dev/null
@@ -1,32 +0,0 @@
-#!/usr/bin/env ruby
-
-require 'pathname'
-
-LINTERS = {
-  cargo_workspace_dependencies: [],
-  contiguous_use_block: [],
-  no_banned_use: [],
-  no_decorative_section_comment: %w[
-    crates/shirabe-semver/src/version_parser.rs
-  ],
-  no_format_trailing_comma: %w[
-    crates/shirabe/src/package/loader/root_package_loader.rs
-    crates/shirabe-spdx-licenses/src/spdx_licenses.rs
-  ],
-  no_mod_rs: [],
-  no_std_collections_maps: [],
-  no_use_as_alias: [],
-  sorted_dependencies: [],
-}
-
-root_dir = Pathname.new(__dir__).join('..').expand_path
-
-results = LINTERS.map do |linter, excludes|
-  require_relative "linters/#{linter}"
-  puts "===== #{linter} ====="
-  ok = send(linter, root_dir, excludes)
-  puts "Passed." if ok
-  puts
-  ok
-end
-exit(results.all? ? 0 : 1)