Log deleted-from-registry bundles during outdated check

[mgoldsborough]

Context

From QA review of issue-37-cli-add-bundle-update-awareness branch.

Problem

In packages/cli/src/commands/packages/outdated.ts, the empty catch {} in getOutdatedBundles silently skips bundles that fail registry lookup. This is fine for transient network errors, but a bundle permanently deleted from the registry will silently disappear from outdated checks. Users have no way to discover stale/orphaned cache entries.

Suggested Fix

Log a debug-level message to stderr when a bundle fails to resolve, e.g.:

} catch {
  process.stderr.write(`=> Warning: could not check ${bundle.name} (may have been removed from registry)\n`);
}

Severity

Warning — UX gap, not a correctness bug.