Plombir::Assets::Manifest
Reads and writes the fingerprinted-asset manifest
(dist/.plombir/manifest.json): source-relative paths under
assets/ mapped to their fingerprinted output-relative paths.
The HTML rewrite pass (roadmap Phase 5, item 2) will read this to
resolve asset_url("style.css"); the pipeline writes it.
Constants
PATH = File.join(".plombir", "manifest.json")
Manifest location inside the output directory.
Class methods
Reads the manifest back, or nil when it is missing or corrupt
(a stale dist/ is never fatal — the next build rewrites it).