v3.0.4

Fixed

• Release tarball now bundles node_modules with the pg dependency, eliminating
  the need for npm install at deployment time. Previously, runtime npm install
  would silently fail on Docker installations with tmpfs cache conflicts, leaving
  the plugin unable to load (Cannot find module 'pg').

Changed

• update-knowledge-plugin.sh simplified: no longer runs npm install on target
  containers, only verifies that bundled dependencies are present.