Files
platform/scripts/theme-preview-server.ts
pastilhasandClaude Opus 5 105766a4eb extract the visual layer into its own workspace
The application no longer knows what it looks like. It imports one stylesheet and
mounts one provider; every colour, surface and radius lives in `src/workspaces/theme`.

Proven both directions, because either alone would be worthless:

  Duck renders IDENTICALLY to before — checked against screenshots taken before
  anything was touched, not asserted.

  Plain renders as white with black ink, no component edits — panels turn white, the
  teal avatar turns black, the grid fills vanish.

── What moved ──

`globals.css` held three unrelated things: Tailwind wiring, the token contract, and
the Duck brand's hex values. Split along those seams. `base.css` is structure and
names no colour; a theme file is values and nothing else, scoped to
`[data-theme='<id>']`. Adding a theme is a CSS file plus one registry line.

Light and dark are separate themes rather than a mode — the owner's call, and it
removes a concept from the app. Each is written out in full: a theme that only makes
sense as a diff against another cannot be authored by a stranger or sold to a
customer. `.dark` survives only as a per-theme flag, because 396 `dark:` utilities in
33 components resolve against it; retiring those retires the flag.

The `duck-*` utility names are kept for now and pointed at neutral variables, so a
non-Duck theme can define them sensibly. Renaming 1,470 occurrences in the same commit
as the extraction would make any visual difference impossible to attribute. Worth
recording that `duck-dark` was never a brand colour — `#14532d` in light, near-white
in dark, used by 946 components to mean "text". It is `--ink` now.

Surfaces are complete CSS values rather than HSL triplets: `--panel-bg` has to be able
to be a gradient or an image, or the glass the app already has would be unthemeable.

The old provider is a re-export, so its six call sites are untouched and the
extraction stays one variable.

── Bug found by the Plain theme ──

`useThemeSync` stamped the server's `appearance.colorMode` over the local theme on
every load, so choosing Plain and reloading silently reverted it. Diagnosed by asking
the page what it was wearing rather than reasoning: `stored` said `duck-dark` when the
script had written `plain`. The server value is now a starting point for a browser
that has never chosen, not a continuous instruction.

── Tools ──

Two, both of which lied to me before they worked. The snapshot script photographed
light twice and called it a clean run (one browser context, accumulated init scripts);
it now warns when a light/dark pair is identical. The preview server returned the
shell for missing assets, so the logo and wallpaper vanished and read as regressions
in the comparison — it falls through to upstream now.

Dead Tailwind v3 residue deleted: `components/ui/tailwind.{config.ts,css}`, referenced
by nothing, with content globs pointing at a directory that does not exist.

── Not done, deliberately ──

`THEMES-NOTES.md` has the full list. The headlines: the reference repo has not been
read, so the switching mechanism is deliberately the dumbest thing that works; the
wallpaper, panel radius and logo are still component-owned and Plain proves it; and
~985 raw Tailwind palette usages remain, worst in Soulseek.

tsgo clean.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-16 22:00:38 +00:00

94 lines
4.0 KiB
TypeScript

/**
* Serve THIS worktree's frontend against the RUNNING platform's backend.
*
* The visual comparison needs the new bundle rendering real data. The obvious way — start a second full
* platform on another port — is the one thing not to do tonight: it shares the database, the install root
* and the sidecar registry with the live server the owner is currently talking to me through, and a second
* instance racing it is exactly the SO_REUSEPORT class of problem that has already cost us an evening.
*
* So this serves static assets from the worktree's build and forwards everything else to the live server.
* The frontend cannot tell the difference: same origin, same cookies, same API. Only the stylesheet and the
* theme provider are new, which is precisely the variable under test.
*
* Read-only in practice — the snapshot script only navigates and screenshots — but it is a proxy, not a
* sandbox: a POST would reach the real backend. Do not point anything destructive at it.
*
* bun scripts/theme-preview-server.ts --port 9010 --upstream http://127.0.0.1:9000
*/
const arg = (name: string, fallback: string): string => {
const i = process.argv.indexOf(`--${name}`);
return i === -1 ? fallback : (process.argv[i + 1] ?? fallback);
};
const port = Number(arg('port', '9010'));
const upstream = arg('upstream', 'http://127.0.0.1:9000');
const dist = arg('dist', 'dist');
// The build emits `index.gen.html` (the generated entry), not `index.html`. Both are accepted so this
// keeps working if that ever changes.
const indexHtml =
(await Bun.file(`${dist}/index.gen.html`)
.text()
.catch(() => null)) ??
(await Bun.file(`${dist}/index.html`)
.text()
.catch(() => null));
if (!indexHtml) {
console.error(` no build found in ${dist}/ — run the frontend build first`);
process.exit(1);
}
const server = Bun.serve({
port,
idleTimeout: 60,
async fetch(req) {
const url = new URL(req.url);
// Anything the backend owns goes upstream, headers and body intact. `/api` covers REST; the rest are
// the paths the SPA fetches that are not assets.
if (url.pathname.startsWith('/api/') || url.pathname.startsWith('/uploads/')) {
const target = `${upstream}${url.pathname}${url.search}`;
try {
return await fetch(target, {
method: req.method,
headers: req.headers,
body: req.method === 'GET' || req.method === 'HEAD' ? undefined : await req.arrayBuffer(),
redirect: 'manual',
});
} catch (err) {
return new Response(`upstream unreachable: ${String(err)}`, { status: 502 });
}
}
// A built asset, if we have one.
const asset = Bun.file(`${dist}${url.pathname}`);
if (url.pathname !== '/' && (await asset.exists())) {
return new Response(asset);
}
/**
* A file we do NOT have goes upstream rather than falling through to the shell.
*
* `public/` — the logo, wallpapers, icons — is served by the platform from outside the build, so the
* first version of this returned index.html for those and the page rendered with a broken logo and no
* wallpaper. Both showed up in the comparison as if the extraction had removed them, which is exactly
* the kind of false positive that gets a real regression waved through next to it.
*
* "Looks like a file" is the extension test: a client-side route never has one.
*/
if (/\.[a-z0-9]{2,5}$/i.test(url.pathname)) {
try {
const res = await fetch(`${upstream}${url.pathname}${url.search}`, { headers: req.headers });
if (res.ok) return res;
} catch {
// Fall through to the shell — a missing asset should not take the page down.
}
}
// Everything else is a client-side route: hand back the shell and let the router decide.
return new Response(indexHtml, { headers: { 'content-type': 'text/html; charset=utf-8' } });
},
});
console.log(` preview on http://127.0.0.1:${server.port} (assets: ${dist}, api -> ${upstream})`);