[devin-ai-integration]

Summary

Two gaps that made embedding a Vite-built UI need a hand-written asset map (BYK/loreai#1831 currently stages ~27 files and writes its own manifest for fossilize):

1. -a only took files, keyed by the literal argument (Add support for asset directories #6).
2. -m only embedded each chunk's file, so an HTML entry's CSS (css[]), imported static assets (assets[]) and the manifest's real location under dist/.vite/ (Vite ≥ 5) were missed — spotlight only works because it sets build.manifest: "manifest.json".

Asset resolution moves into src/assets.ts (also exported from the library):

// -a <path>[=<key>]
collectAssets(["asset.txt", "dist/ui=ui", "dist/favicon.svg=favicon.svg", "dist="])
// → { "asset.txt": ..., "ui/index.html": ..., "ui/assets/index-abc.js": ..., "favicon.svg": ..., "index.html": ... }
//   directories are walked recursively, keys always use "/" (Windows too),
//   "" key = root of the asset namespace, later specs win on collision

// -m <manifest>: file + css[] + assets[] of every chunk, entry key if it exists as output
collectViteManifestAssets("dist/.vite/manifest.json")
// → { "manifest.json", "index.html", "assets/index-abc.js", "assets/index-def.css", "assets/logo-xyz.svg" }

Behaviour kept: file specs without = keep the literal argument as key (-a asset.txt → getRawAsset("asset.txt")), the manifest is still embedded under its basename, -a still overrides -m. One deliberate change: the isEntry key (e.g. index.html) is only embedded when <outDir>/<key> exists, instead of failing the build for JS entries whose key is a source path (src/main.ts).

Not included from #36: built-in br/gzip precompression (consumers can precompress into the directory they pass to -a) and node:vfs (needs Node ≥ 26.4).

Test plan

• npm run build (tsc + tsup) clean
• New CI step on all three OSes: -a assets-dir=data → binary reads data/a.txt + data/nested/b.txt; -m vite-dist/.vite/manifest.json → binary reads index.html, the JS chunk, its CSS and SVG via the embedded manifest.json
• Existing -a asset.txt smoke unchanged
• Locally: collectAssets(["./assets-dir", "vite-dist=", "assets-dir/a.txt=x/y.txt", "vite-dist/assets=static/"]) yields the expected normalized keys

Closes #6, refs #36.

Link to Devin session: https://app.devin.ai/sessions/5ac126b5d15542608f3dcaccc477ac32
Open in Devin Desktop: https://app.devin.ai/desktop/session/5ac126b5d15542608f3dcaccc477ac32?variant=devin
Requested by: @BYK

[devin-ai-integration]

I'll fix CI failures and address comments from users with write access. I'll skip comments containing "(aside)".

• Disable automatic comment, CI, and merge conflict monitoring