feat(phase-c): resolve PhpMixed-conversion phase-b TODOs

Implement the foundational PhpMixed conversion infrastructure
(From<bool|i64|f64|String>, order-sensitive PartialEq matching PHP ===)
and resolve the category-G phase-b TODOs that depend on it:

- Fix VCS driver cache paths that discarded parsed JSON or diverged on
  null caches (svn/forgejo/gitlab/git-bitbucket/github).
- Wire up real conversions previously stubbed or dropped: suggests
  platform config, audit ignore-severities, composer_repository search
  and ProviderInfo, class_loader prefix/classmap merges, locker lock
  diff comparison, advisory JSON serialization, SPDX license fields.
- Make GenericRule take a typed ReasonData; populate RULE_ROOT_REQUIRE
  with the constraint and convert PhpMixed at the call sites.

1 files changed, 0 insertions, 2 deletions

diff --git a/crates/shirabe/src/repository/filesystem_repository.rs b/crates/shirabe/src/repository/filesystem_repository.rs
index bb78886..fd7349a 100644
--- a/crates/shirabe/src/repository/filesystem_repository.rs
+++ b/crates/shirabe/src/repository/filesystem_repository.rs
@@ -151,7 +151,6 @@ impl FilesystemRepository {
         let mut loader = ArrayLoader::new(None, true);
         if let Some(packages_list) = packages.as_list() {
             for package_data in packages_list.iter() {
-                // TODO(phase-b): expected IndexMap<String, PhpMixed> but package_data is PhpMixed.
                 let cfg = (**package_data)
                     .as_array()
                     .cloned()
@@ -167,7 +166,6 @@ impl FilesystemRepository {
             }
         } else if let Some(packages_array) = packages.as_array() {
             for (_, package_data) in packages_array.iter() {
-                // TODO(phase-b): expected IndexMap<String, PhpMixed> but package_data is PhpMixed.
                 let cfg = (**package_data)
                     .as_array()
                     .cloned()