Downloadable extras for NotesCraft: syntax grammars, plugins, themes and templates. The app reads index.json, then downloads one file on demand from the matching folder.

index.json

Four lists, one per folder: grammars, plugins, themes, templates. Every entry has:

Field	Meaning
`name`	Unique id inside its list (lowercase, `-` allowed)
`title`	Display name
`aliases`	Other names the app should match (grammars: fence labels)
`file`	Path inside this repository
`size`	Bytes; the app rejects a file that differs
`sha256`	Hex digest; the app rejects a file that differs
`license`	SPDX id; only redistributable work is added
`source`	Upstream URL

Grammar entries also carry format (sublime-syntax, final format confirmed by the app prototype) and scope (for example source.zig).

{ "name": "zig", "title": "Zig", "aliases": ["zig"], "file": "grammars/zig.sublime-syntax",
  "format": "sublime-syntax", "scope": "source.zig", "size": 31000,
  "sha256": "<hex digest>", "license": "MIT", "source": "<upstream url>" }