Content-addressed .chain bundles for the Ch∆In bundled store. The
platform seed (crates/chain_hub/store-index/seed.yaml) points its
wasm_urls at this repo's Forgejo-raw paths; each entry's sha256 in the
seed pins the bundle, so trust does not depend on the host.
Signed-off-by: flemming-it <sf@flemming.it>
