New crate: weft-runtime — the child process spawned by weft-appd to
execute WEFT application packages.
src/main.rs:
- Parses CLI arguments: <app_id> <session_id> (as per the supervisor
contract in runtime.rs).
- resolve_package(): searches user store
(~/.local/share/weft/apps/<app_id>) then system store
(/usr/share/weft/apps/<app_id>) for a wapp.toml manifest. Overridden
by WEFT_APP_STORE env var.
- Verifies app.wasm exists in the resolved package directory.
- Stubs Wasmtime execution with a TODO comment; prints 'READY' to
stdout and exits cleanly so weft-appd's supervisor can complete the
session lifecycle during development and integration testing.
Tests (2):
- package_store_roots_includes_system_path: system store path present.
- package_store_roots_uses_weft_app_store_when_set: WEFT_APP_STORE
override replaces default search list.
Also:
- Added weft-runtime to workspace Cargo.toml members.
- wsl-test.sh: added cargo test -p weft-runtime.
