fix(router): resolve deep links in both URL forms

[rubenvdlinde]

Nextcloud serves an app under both /apps/<id>/... and /index.php/apps/<id>/..., but generateUrl() returns only the form the instance is configured for. Used as the vue-router base, a visitor arriving on the other form has a pathname the router cannot strip its base from: no route matches, the catch-all takes over, and they land on the dashboard with no error.

I measured this on learniq, which had the identical base, against a live instance and all 282 of its routes:

URL	lands on
/apps/learniq/courses	Courses
/index.php/apps/learniq/courses	dashboard

Every route behaved the same way. This is not one broken page, it is every deep link in that URL form, and it fails silently, which is what makes it expensive: a bookmark, an emailed link or an integration that hardcodes /index.php just quietly shows the wrong screen.

routerBase() derives the base from the pathname, so it always matches the URL the visitor actually arrived on. This is not a new idea in the fleet: openregister, opencatalogi, stackiq, larpinq, zaakafhandelapp, pipelinq and keepiq already do exactly this. This app is one of ten that were still on the naive form.

The change is the same in every one of them: add routerBase() and use it as the history base. generateUrl() stays as the fallback for the case where the pathname does not match at all.

Honest scope note. I verified the behaviour and the fix end to end on learniq (23 e2e cases passed, against 1 passed and 23 failed before). Here I have verified that the file parses and lints, and that the router base is the only thing that changed. The E2E job runs on the push to development rather than on this PR, so the suite verdict for this app arrives after merge.

[github-actions]

Quality Report — ConductionNL/shillinq @ 2ce2323

Check	PHP	Vue	Security	License	Tests
lint	✅
phpcs	✅
phpmd	✅
psalm	✅
phpstan	✅
phpmetrics	✅
eslint		✅
stylelint		✅
build		✅
check-manifest		✅
check-manifest-shell		✅
format		✅
check-l10n-js		✅
check-schema-l10n		✅
check-manifest-budget		✅
check-markers		✅
check-registers		✅
check-seeds		✅
check-fragment-required		✅
check-nav-reachability		✅
check-job-registration		✅
test-l10n		✅
composer			✅	✅ 106/106
npm			✅	✅ 537/537
app:check-code	⏭️
info.xml	✅
REUSE	❌
PHPUnit					✅
Newman					✅
Playwright					⏭️ deferred — runs on the promotion into beta/main, not on a pull request into development
Hydra gates					✅

---

Quality workflow — 2026-09-01 17:02 UTC

Download the full PDF report from the workflow artifacts.