refactor: drop dead code surfaced by cargo

cargo check was showing five real warnings, all genuinely dead:

* container/mod.rs   — re-exports compute_container_name, AdoptionReport,
                       ReconcileAction, ReconcileReport were unused outside
                       prod_orchestrator. Drop from the pub use line.
* prod_orchestrator  — with_runtime + insert_manifest_for_test only exist
                       for the test module in the same file. Mark them
                       #[cfg(test)] so they don't appear in release builds.
* async_lifecycle    — remove_package_entry has no callers; doc claims
                       "used for install-failure cleanup" but nothing
                       cleans up. Delete (10 lines).
* registry.rs        — `use tracing::{debug, info};` had no consumers.
* fips.rs            — unused-assignment chain on last_status. The poll
                       loop always sets it on every break path, so the
                       initial `None` and the unwrap_or_else fallback
                       were both dead. Refactored to `let after = loop
                       { ...; break s; };`.

cargo check is now clean. cargo test --workspace --bins: 614 passed.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

core/archipelago/src/api/rpc/package/async_lifecycle.rs

@@ -410,16 +410,6 @@ async fn set_package_state_and_clear_uninstall_stage(
     }
 }
 
-/// Remove a package entry from state. Used for install-failure cleanup
-/// (since there's no pre-state to revert to — the entry was created
-/// speculatively when we flipped to Installing).
-async fn remove_package_entry(state_manager: &StateManager, package_id: &str) {
-    let (mut data, _) = state_manager.get_snapshot().await;
-    if data.package_data.remove(package_id).is_some() {
-        state_manager.update_data(data).await;
-    }
-}
-
 /// Kick the container scanner to run immediately and wait for it to finish
 /// (with a 2s timeout). Used by install/update success paths so the fresh
 /// manifest — with `interfaces.main.ui` populated from the now-running