FilmAsset.CustomData missing Chunks/FilmLength #34

Version: 1.0.14

ugcDiscovery.getFilmByMatchId returns the film blob manifest with CustomData.Chunks[] (each { Index, FileRelativePath, ChunkSize, ChunkType }) and CustomData.FilmLength, plus BlobStoragePathPrefix at the top level — those are what a client needs to download the chunks. The FilmCustomData interface doesn't model any of them (it has FilmMajorVersion, FilmStatusBond, ManifestRefreshSeconds, etc.), and getFilmByMatchId is typed HaloApiResult<AuthoringAsset> which has neither BlobStoragePathPrefix nor a typed CustomData.

What the API actually returns (truncated):

{
  "BlobStoragePathPrefix": "https://blobs-infiniteugc.svc.halowaypoint.com/.../",
  "CustomData": {
    "Chunks": [
      { "Index": 0, "FileRelativePath": "/filmChunk0", "ChunkSize": 1234567, "ChunkType": 1 },
      { "Index": 1, "FileRelativePath": "/filmChunk1", "ChunkSize": 987654, "ChunkType": 2 }
    ],
    "FilmLength": 123456,
    "MatchId": "...",
    "HasGameEnded": true
  }
}

Fix: add to FilmCustomData:

Chunks?: { Index: number; FileRelativePath: string; ChunkSize: number; ChunkType: number }[];
FilmLength?: number;
MatchId?: string;
HasGameEnded?: boolean;

and either type getFilmByMatchId as HaloApiResult<FilmAsset> or add BlobStoragePathPrefix?: string to whatever it returns.

filmshell carries a local HaloFilm shape until this lands.