Replaces inline `applications`/`users` merging with dedicated lookup
plugins and runtime hydration. Introduces `add_csp_hash` filter,
integrates sort into `find_dock_val_by_bkp_entr`, splits the Keycloak
one-shot realm import into `05a_realm_import_run.yml`, and fixes the
Mastodon administrator task YAML. Removes obsolete `csp_hashes` filter,
`sys-token-store` Jinja filter, and empty CLI setup modules.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>