- rename internal/pdbmux to internal/puppetdb
- fetch facts with one GET /pdb/query/v4/facts AST query per node
- drop the per-node fallback route and its two response shapes
- rename --pdb to --puppetdb, CATALOG_DIFF_PDB to CATALOG_DIFF_PUPPETDB and
pdb_url to puppetdb_url
- describe the fact source generically in the README and AGENTS.md
Compile a host's catalog in a base and a test environment over the
puppetserver API, then diff the two.
- add catalog-diff CLI with cobra flags, config precedence and exit codes
- add puppetserver mTLS client for POST /puppet/v4/catalog
- add pdbmux fact client
- add catalog normalisation, diff engine and text/JSON renderers
- add Makefile, nfpm RPM packaging and woodpecker pipelines