[bulungasdeveloper]

Summary

Deleting a file from the viewer in a public link share with delete permission
failed with Missing mandatory root in the browser console. The file was not
removed: the exception is thrown while building the temporary NcFile node,
before the DELETE request is sent.

onDelete only treated remote.php/dav URLs as DAV resources. Files opened
from a public share are served over public.php/dav (web UI) or
public.php/webdav (legacy clients), so the node was created with
root: undefined.

Recognise (remote|public).php/(web)?dav as DAV endpoints. Public shares now
get root = getRootPath() (/files/<token>) and the same decoded source the
store uses. Behaviour for authenticated users is unchanged.

Testing

• New Playwright spec playwright/e2e/sharing/delete-share.spec.ts: public
  link share with delete permission → open image in viewer → Delete → viewer
  closes and the file disappears from the list.
  • 7/7 new spec.
  • 21/21 together with the existing delete and download-share specs.
• npm ci && npm run build (Node 24, Linux): OK. The five generated assets are
  in a separate chore(assets) commit because the build workflow checks for a
  clean tree.
• npm run stylelint: 0 errors (11 pre-existing warnings).
• npx eslint src: 0 errors (24 pre-existing warnings).

No unit tests exist in this app; the Playwright suite is the relevant coverage.

Notes

• The test creates a folder link share with
  READ | UPDATE | CREATE | DELETE permissions; the viewer only offers Delete
  when the file carries the D permission.
• The source passed to the temporary node is intentionally decoded, matching the
  files store; the DELETE request still uses the encoded URL.
• Targets stable35. main no longer ships the app.

🤖 AI (if applicable)

• The content of this PR was partly or fully generated using AI: code and test drafted with opencode/DeepSeek V4.1 Flash Free, reviewed and tested manually.

[bulungasdeveloper]

Playwright is intentionally disabled on fork PRs, so Playwright E2E tests and
playwright-summary will stay red. I ran the suite locally on Node 24: 21/21
(new public-share delete spec 7/7, plus the existing delete and download-share
specs). Could a maintainer run the workflow from an upstream branch or merge as
in #3457? All other checks are green.