Build the new Svelte client (client_v2) in CI, bake it into the Docker
image alongside the legacy React client, and serve it by default. Set
SPOOLMAN_LEGACY_CLIENT=TRUE to fall back to the old client.
SinglePageApplication is generalized to serve either client: the React
client keeps its index.html + base-path rewriting, while the Svelte
client uses a 200.html SPA fallback, serves prerendered per-route pages,
and serves relative-path assets verbatim. The tweaked-HTML store is moved
off self.html, which StaticFiles uses as its HTML-mode flag.
The Playwright frontend suite targets the React DOM, so it's pinned to
the legacy client via SPOOLMAN_LEGACY_CLIENT for now.
Claude-Session: https://claude.ai/code/session_01VQQtwPBPiMCoZCpBbbqS64
added env variable SPOOLMAN_METRICS_ENABLED for enabled database collector
set metrics path as /metrics
checked Null values at vendors, init weight and price
removed some logs
Had to remove the VOLUME definition in the dockerfile for this, otherwise the data dir would always be mounted by an anonymous volume if the user didn't mount it correctly, so the python script wouldn't be able to detect it.