BWF PLAYER-MOD AUTHORING CHECKLIST

UNPUBLISHED LOCAL MIGRATION
- Browser-local Rust tooling exists only in local development.
- No CrowdyJS package version has been assigned or published for this change.
- The planned major removes languageServiceUrl and appToken IDE options.
- The lazy language worker receives no token and opens no authoring connection.

INPUTS
- appId: BWF app id
- gridId: a grid currently owned by the author
- name: lowercase crate-style module name, unique in the grid
- target: SERVER or CLIENT
- sourceFilesJson: JSON object containing Cargo.toml and src/lib.rs

REQUIRED SOURCE MAP
{
  "Cargo.toml": "<contents of Cargo.toml>",
  "src/lib.rs": "<contents of server-lib.rs or client-hud-lib.rs>"
}

WORKFLOW
1. Deploy CLIENT source with playerComputeDeploy.
2. Poll playerComputeVersions until compileStatus is succeeded.
3. Deploy SERVER source and wait for successful compile.
4. Bind the current versions with playerComputeSetRequires.
5. Enable the server with playerComputeSetEnabled.
6. Visitors query gridClientMods, display authorCapabilitySummaryJson, and
   call trustGridAuthor with the exact authorCapabilityHash.
7. Fetch client bytes with playerCodeClientArtifact(attachmentId: ...).
8. Poll only gridClientMods metadata; stop on removal/hash change/grid exit.

INVARIANTS
- Rust + crowdy-compute-sdk = "0.1.5"; dependencies must be allow-listed.
- Server code executes as the current grid owner and is grid-confined.
- Client code runs in the browser worker with no DOM/token/network access.
- hud_set and overlay_draw are host-rendered presentation requests.
- Local parser/index diagnostics are advisory; Deploy compilation is authoritative.
- Local tooling does not provide borrow checking, full trait/proc-macro
  resolution, Cargo build-script execution, or full build semantics.
- There is no authoring endpoint/token or server language-service fallback.
- Trust is scoped to visitor + app + grid + author + aggregate capability hash.
- Any capability widening requires a new explicit trust action.

DOWNLOADS
- /helpers/bwf-mod/Cargo.toml
- /helpers/bwf-mod/server-lib.rs
- /helpers/bwf-mod/client-hud-lib.rs