* feat(artifacts): preview CSV and TSV files as bounded tables
* chore: keep preview screenshots out of the PR file diff
* fix(artifacts): detect record newlines outside quoted fields
* test(auth): include project permissions in me contract expectations
* feat(frontend): render markdown artifacts in the new window
The artifacts panel's "open in new window" action handed the browser the
raw Gateway response. For markdown that is a `text/markdown` body the
browser can only show as source, so the new window was a text dump rather
than a reader.
Route markdown artifacts to a new `/artifacts/view` page that renders them
with the same components the panel uses (SafeStreamdown + the artifact
rehype chain + citation links/panel), including the truncated-preview
banner and its "load full file" action. Everything else keeps the raw
Gateway URL — notably HTML/SVG, which the Gateway deliberately serves as a
download so active content never executes in the application origin.
- `core/artifacts/viewer.ts` centralizes which stored artifacts are
markdown (`.skill` archives included, since they hold a SKILL.md), so
the panel and the viewer route cannot drift.
- `ArtifactFilePreview` and its siblings move out of
`artifact-file-detail.tsx` into `artifact-file-preview.tsx`; otherwise
the standalone route would pull the CodeMirror editor into its bundle.
- The window title comes from the route's `generateMetadata`, not
`document.title`, which the App Router overwrites after hydration.
- The viewer reads content through `useStandaloneArtifactContent`, which
shares `useArtifactContent`'s query key but not its `useThread`
dependency, since a detached window has no thread context.
Claude-Session: https://claude.ai/code/session_013AiCrC5SBc3HdFYNxsp1EC
* fix(frontend): keep the artifact target across re-authentication
Review found the standalone viewer unrecoverable from an expired session.
The window's target lives entirely in `?path=...&thread_id=...`, and both
auth paths dropped it:
- The layout guard redirected to `/login` with no `next` at all. A layout
cannot read `searchParams`, so the guard moves into the page, which can
— and rebuilds the full viewer address for `next`. The layout loses its
AuthProvider along the way: nothing under this route reads `useAuth`,
and the guard now makes a single `getServerSideUser` call per request.
- The shared fetch wrapper built `next` from `window.location.pathname`,
which silently truncated the query string. It now carries `search` too,
so any route holding state in the query survives a 401, not just this
one. `validateAuthNextPath` already accepts a query string.
`buildArtifactViewerURL` is split out of `resolveArtifactOpenURL`: the
guard needs the route itself, never the Gateway fallback that the latter
takes for non-markdown targets.
Tests: the login round trip (unit — the rebuilt URL survives
`validateAuthNextPath` and parses back to the same target), the fetch
wrapper preserving the query on 401 (unit), and the expired-session
window reaching `/login` with the artifact intact (E2E). The E2E asserts
on the popup's navigation *requests*, since `(auth)/layout` answers
`/login` with a server redirect under DEER_FLOW_AUTH_DISABLED and no
navigation commits.
`tests/unit/core/models/api.test.ts` stubbed `window.location` without
`search`; a real Location always has it.
Claude-Session: https://claude.ai/code/session_013AiCrC5SBc3HdFYNxsp1EC
* fix(frontend): keep public showcase artifacts out of the auth gate
Review found that the viewer's access check regressed `/showcase`. Those
pages render with `isMock`, their artifacts are served by the
unauthenticated demo route, and the raw artifact URL this window replaced
stayed public — so gating the window unconditionally bounced every
logged-out showcase visitor to /login for a document that is already
public.
`requiresAuthenticatedViewer` exempts a mock target only when
`resolveStaticDemoArtifact` would actually serve it. The allowlist is the
authority rather than the flag: `mock=true` is caller-supplied, so a
target the demo route answers with 404 — a non-allowlisted path, or a
thread that is not a demo thread — still needs a session.
Covered in `tests/e2e-auth/`, since the default E2E config disables auth
and cannot see this: a public showcase artifact renders without a
session, while a non-allowlisted path and a missing mock flag both land
on /login. Verified the positive case goes red without the exemption.
Claude-Session: https://claude.ai/code/session_013AiCrC5SBc3HdFYNxsp1EC
