feat(phase-c): resolve closure-capture phase-b TODOs in config/create-project

Port Config::process() to the real Preg::replace_callback, whose closure
borrows &self/flags and calls get_with_flags; surface get() errors via a
captured cell so process now returns Result. Switch the replace_callback
shim bounds to FnMut to allow the error-capturing closure.

Wire CreateProjectCommand suggestion collection through the
Rc<RefCell> reporter's interior mutation.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/crates/shirabe/src/command/create_project_command.rs b/crates/shirabe/src/command/create_project_command.rs
index 77cbea7..f8fc511 100644
--- a/crates/shirabe/src/command/create_project_command.rs
+++ b/crates/shirabe/src/command/create_project_command.rs
@@ -972,8 +972,11 @@ impl CreateProjectCommand {
         im.notify_installs(io.clone());
 
         // collect suggestions
-        // TODO(phase-b): self.suggested_packages_reporter is on the outer scope via &self
-        // self.suggested_packages_reporter.add_suggestions_from_package(&*package);
+        self.suggested_packages_reporter
+            .as_ref()
+            .unwrap()
+            .borrow_mut()
+            .add_suggestions_from_package(package.clone());
 
         let installed_from_vcs = package.get_installation_source().as_deref() == Some("source");