Mirror of OpenIPC/firmware#2169. PR #102 extended enrich_manifest.py with SIZES_COMPOUND_RE + SIZES_SIMPLE_RE + parse_sizes() so the public manifest carried `platforms[<plat>].sizes.url` and `@sizes` lines pointing at each release's sizes.json asset. The intent was a browser-side consumer; the GitHub release-asset URLs return no Access-Control-Allow-Origin header, so every browser fetch was blocked by CORS. This commit reverts only the manifest-indexing half of #102. The release-asset upload itself stays in master.yml — server-side consumers can still read the JSON via `gh release download` or any CI workflow. Only the in-manifest URL is removed, because that URL only made sense for an in-browser reader that turns out can't reach it. The resulting enrich_manifest.py is bit-for-bit identical to the pre-#102 state. Co-authored-by: John <zekccsripfwrocp-15689@yn.furvionx.com> Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>