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/command/base_dependency_command.rs b/crates/shirabe/src/command/base_dependency_command.rs
index 1f4d5d4..9317b31 100644
--- a/crates/shirabe/src/command/base_dependency_command.rs
+++ b/crates/shirabe/src/command/base_dependency_command.rs
@@ -379,8 +379,6 @@ pub trait BaseDependencyCommand: BaseCommand {
             new_table.extend(table);
             table = new_table;
         }
-        // TODO(phase-b): render_table expects Vec<PhpMixed>; build PhpMixed cells once a
-        // converter exists for Vec<String> rows.
         let table_as_mixed: Vec<PhpMixed> = table
             .into_iter()
             .map(|row| {