Extends the studio-preview fix to the render path and the asset-discovery
utilities, which share the same resolver and had the same defect.
`rewriteAssetPath` takes an optional `assetExists` probe. A plain relative ref
authored in a sub-composition (`_shared.css`, `clip.mp4`) is re-pointed at the
composition's own directory when that sibling exists on disk; project-root refs
with no sibling (the registry's `assets/logo.png` convention) stay as authored.
Callers that can see the filesystem supply the probe, so the module stays free
of node:fs.
Also fixes a second defect in the inliner: `<head>` <link> hrefs and external
script srcs are hoisted into the root document but never went through the
rewrite at all, so even the documented `../` form escaped the project and 404'd
at render time.
Wired into the preview bundler, the producer compiler, the studio preview
builder, the HEVC preview lint, the project lint's asset scans, publish proxy
baking, and media-treatment source resolution.
Fixes#2956
## What
A composition in a subdirectory that references a **sibling** file (`<link rel="stylesheet" href="_shared.css">`, not `../_shared.css`) is now resolved against the composition's own directory when building the standalone sub-composition preview page.
## Why
The preview page borrows the project-root `<base href="/api/projects/:id/preview/">`, but the path rewriter only rewrote `../`-prefixed paths. So `design/styleframes/frame-01.html` referencing `_shared.css` was served unrewritten and the browser requested `/preview/_shared.css` → **404**.
With its stylesheet missing, the frame renders unstyled: `body` has no background, and the thumbnail generator's transparent-body fallback paints it `#1c2028`. Result: dark navy thumbnail with unreadable dark text on every styleframe in the Board view.
The report attributed this to project scale (~21 sibling files). It is not scale-related: a 2-file project reproduces identically, and the same file moved to the project root renders correctly. The trigger is **composition-in-a-subdirectory + relative sibling asset ref**.
Reproduced before the fix (single `curl` against the thumbnail endpoint, plus a direct headless capture of the preview URL):
```
HTTP 404 http://localhost:5190/api/projects/big/preview/_shared.css
body bg: rgb(28, 32, 40)
```
## How
`resolvePreviewAssetPath` in `packages/studio-server/src/helpers/subComposition.ts`, applied through the single rewrite pass all three dispatch branches (template / full-doc / fragment) already share, so `src`, `href`, inline `style` urls, and `<style>` blocks all get the same rule:
1. `../` paths keep resolving against the composition dir (unchanged, shared with the producer's inliner so preview and render agree).
2. Any other relative path is re-pointed at the composition's directory **only when that sibling file exists on disk**.
The disk check is what keeps the two conventions apart: registry blocks are installed into a subdirectory but reference project-root assets (`assets/logo.png`), which are already correct under the root base and have no sibling on disk, so they are left untouched.
Not changed: the `#1c2028` transparent-body fallback in the thumbnail generator. It is correct for genuinely transparent compositions; the illegibility was a downstream symptom of the 404.
## Test plan
- [x] Unit tests added/updated — two tests in `subComposition.test.ts`: a red-first regression guard for the sibling `<link>` / `<img>` / `url()` case, and a guard that project-root-relative refs with no sibling on disk stay untouched.
- [x] Manual testing performed — reproduced the dark thumbnail on a generated project (21-file and 2-file variants both reproduce), then confirmed the same URL renders the white-to-lavender gradient with legible text after the fix, with no 404 in the network log.
- [x] `packages/studio-server` suite green: 29 files / 402 tests. Lint, format, typecheck clean.
- [ ] Documentation updated — n/a
- A long-lived preview cached its telemetry posture in two places
(readConfig and shouldTrack). Running `telemetry disable` in another
terminal left it resolving canaries and injecting the CLI id for hours.
Both caches are now dropped together at a request boundary.
- Studio minted and shipped a telemetry id for every render regardless of
the browser profile's opt-out, and the server emitted the outcome under
CLI policy, which cannot see localStorage or DNT. The browser now sends
an explicit telemetryOptOut, distinct from an old client's omission.
- Any non-empty HYPERFRAMES_PREVIEW_HOST disabled the DNS-rebinding guard,
so even a loopback bind accepted a hostile Host. The guard now holds for
loopback binds and, on a LAN bind, admits only names this machine
answers on.
- sunsetAfter had no reader of the current date. A scheduled workflow runs
scripts/check-canary-sunset.ts weekly, so a failure lands on the
rollout's owner rather than on an unrelated PR author.
- The install-state seed memo outlived `rm -rf ~/.hyperframes`,
resurrecting a cleared cohort. Removed; it only saved a read on a
readConfig cache miss.
Docs updated for the Host rule and the 100% exclusion carve-out.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
* refactor(lint): route asset-src skips through a shared isUnresolvedAssetPlaceholder predicate
Follow-up to the templating-token fix. The __UPPER__ + templating-token skip was
copy-pasted across the asset-src sites and had drifted: two non-lint sites carried only
the __UPPER__ half, and htmlCompiler's comment still claimed it "matches lint's skip"
after lint's skip became a superset. Extract one isUnresolvedAssetPlaceholder(rawSrc) in
@hyperframes/parsers/asset-resolution (both placeholder shapes, checked on the raw value)
and route every site through it: the four project.ts lint sites, hevcPreviewLint, and the
two previously-missed post-substitution sites (studio-server mediaCodecMap, producer
htmlCompiler). Remote/inline handling stays per-site (audio uses a narrower check).
Behavior-preserving for the lint sites (full suite green); the two non-lint sites are
post-substitution so they don't false-positive today, but now share one definition and
can't drift again. Adds unit tests for the predicate.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* docs(parsers): refresh hasUnresolvedTemplatingToken aside for the shared predicate
The parenthetical said the __UPPER__ shape keeps its own inline check at each call
site; this branch folded it into isUnresolvedAssetPlaceholder, so point there instead.
Addresses review nit.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
## What
Allow Studio Preview to serve an asset reached through a project-local symlink whose target is in a shared directory outside the project, including browser-hostile video assets that need an authoring proxy.
## Why
Preview rejected these assets with a 404 while the renderer accepted the same path. The initial static-route fix still failed for HEVC, ProRes, AV1, and VP9 assets because the proxy transcoder rejected the external target.
## How
Use lexical project-root containment for the read-only static asset route and proxy source request. The transcoder canonicalizes the target for ffmpeg and includes that identity in its cache key, while keeping the proxy cache inside the project. Composition source paths retain canonical containment because preview can persist their data-hf-id values.
## Test plan
- [x] Unit tests added/updated
- [x] `bun run --cwd packages/studio-server test` (397 tests)
- [x] Studio Server typecheck, oxlint, and oxfmt
- [x] External-symlinked hostile-video proxy route regression
- [x] Static-route traversal regression
- [ ] Documentation updated (not applicable)
Vance Ingalls