fix(secrets): confirm before deleting a secret from the detail sidebar

[remko48]

Depends on

ConductionNL/nextcloud-vue#931 — keepiq pins @conduction/nextcloud-vue
^2.29.0, so this needs #931 merged, released, and the dependency bumped here
before it can be verified end to end. The dialog itself uses only
cnOpenModal and the modal registry, which the pinned version already
provides — the sidebar opens secret-edit, secret-move and secret-share
the same way today — so no code here waits on new library API.

The problem

The sidebar's … menu called deleteSecret() straight from the click handler:
the only irreversible action in the app was also the only one with no
confirmation, on the path people actually use, because list-view rows carry no
… menu of their own. The table-view row menu already confirmed, which is why
this went unnoticed.

The change

Adds SecretDeleteConfirmDialog, registered as the secret-delete modal and
opened through cnOpenModal like the sidebar's edit, move and share dialogs.
It mirrors FolderDeleteConfirmDialog: it owns the delete call and emits
deleted, so a refused delete (403 on a delegated secret, a server error, an
offline write) keeps the dialog open with the reason inline rather than closing
the sidebar behind it — which reads exactly like a delete that worked.

The wording reuses the existing Delete secret, Cancel and Failed to delete secret keys. The one new string mirrors BulkDeleteDialog's no-trash phrasing
and ships with its Dutch translation.

Reviewer note on l10n: this consumes the last unit of slack in the parity
ratchet. Every locale except nl now sits exactly at its bound, so the next
new source string will fail test:l10n unless it is translated into all ~36
locales.

[github-actions]

Quality Report — ConductionNL/keepiq @ 2949638

Check	PHP	Vue	Security	License	Tests
lint	✅
phpcs	✅
phpmd	✅
psalm	✅
phpstan	✅
phpmetrics	✅
eslint		✅
stylelint		✅
build		✅
check-manifest		✅
test-l10n		✅
format		✅
check-l10n-js		✅
check-schema-l10n		✅
composer			✅	✅ 111/111
npm			✅	✅ 536/536
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 — 2026-09-02 11:11 UTC

Download the full PDF report from the workflow artifacts.

[github-actions]

Quality Report — ConductionNL/keepiq @ 2fbdcbe

Check	PHP	Vue	Security	License	Tests
lint	✅
phpcs	✅
phpmd	✅
psalm	✅
phpstan	✅
phpmetrics	✅
eslint		✅
stylelint		✅
build		✅
check-manifest		✅
test-l10n		✅
format		✅
check-l10n-js		✅
check-schema-l10n		✅
composer			✅	✅ 111/111
npm			✅	✅ 536/536
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 — 2026-09-03 07:07 UTC

Download the full PDF report from the workflow artifacts.

[github-actions]

Quality Report — ConductionNL/keepiq @ b230c7f

Check	PHP	Vue	Security	License	Tests
lint	✅
phpcs	✅
phpmd	✅
psalm	✅
phpstan	✅
phpmetrics	✅
eslint		✅
stylelint		✅
build		✅
check-manifest		✅
test-l10n		✅
format		✅
check-l10n-js		✅
check-schema-l10n		✅
composer			✅	✅ 111/111
npm			✅	✅ 536/536
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 — 2026-09-03 07:20 UTC

Download the full PDF report from the workflow artifacts.