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, 3 insertions, 13 deletions

diff --git a/crates/shirabe/src/repository/vcs/git_bitbucket_driver.rs b/crates/shirabe/src/repository/vcs/git_bitbucket_driver.rs
index 3f0be13..f8cfd7a 100644
--- a/crates/shirabe/src/repository/vcs/git_bitbucket_driver.rs
+++ b/crates/shirabe/src/repository/vcs/git_bitbucket_driver.rs
@@ -239,7 +239,6 @@ impl GitBitbucketDriver {
             .and_then(|v| v.as_string())
             .map(String::from);
 
-        // TODO(phase-b): unwrap PhpMixed::Array into the typed IndexMap stored on self
         self.repo_data = match repo_data {
             PhpMixed::Array(m) => m.into_iter().map(|(k, v)| (k, *v)).collect(),
             _ => IndexMap::new(),
@@ -262,18 +261,9 @@ impl GitBitbucketDriver {
             if self.inner.should_cache(identifier) && {
                 let res = self.inner.cache.as_mut().and_then(|c| c.read(identifier));
                 if let Some(res) = res {
-                    // TODO(phase-b): wrap parsed PhpMixed::Array into the IndexMap-shaped composer slot
-                    composer = Some(
-                        JsonFile::parse_json(Some(&res), None)?
-                            .as_array()
-                            .cloned()
-                            .map(|m| {
-                                m.into_iter()
-                                    .map(|(k, v)| (k, *v))
-                                    .collect::<IndexMap<String, PhpMixed>>()
-                            })
-                            .unwrap_or_default(),
-                    );
+                    composer = JsonFile::parse_json(Some(&res), None)?
+                        .as_array()
+                        .map(|m| m.iter().map(|(k, v)| (k.clone(), (**v).clone())).collect());
                     true
                 } else {
                     false