feat: data-testid on Cn* components for journeydoc capture specs

[rubenvdlinde]

Adds stable data-testid="cn-…-…" selectors to the high-traffic Cn* shell components so the journeydoc capture spec (ADR-030) on every Tier-4 Conduction app can target them without per-app instrumentation. Found in the decidesk pilot (ConductionNL/decidiq#195) where most chrome turned out to be @conduction/nextcloud-vue. Purely additive — zero behaviour or styling impact, per the journeydoc-instrument convention.

Components touched

Shell

• CnAppRoot → cn-app-root on <NcContent>; cn-app-root-capabilities-loading on the phase-0a spinner div
• CnAppNav → cn-nav on <NcAppNavigation>; cn-nav-entry-${item.id} on each main/child/settings entry; cn-nav-footer on the settings <ul>
• CnAppLoading → cn-app-loading on the root
• CnDependencyMissing → cn-dependency-missing on the root

Pages

• CnPageRenderer → cn-page + data-testid-page-id on the dispatch wrapper
• CnPageHeader → cn-page-header, cn-page-title, cn-page-description
• CnIndexPage → cn-index-page
• CnDetailPage → cn-detail-page, cn-detail-page-header
• CnDashboardPage → cn-dashboard-page, cn-dashboard-page-header
• CnSettingsPage → cn-settings-page, cn-settings-page-tabs, cn-settings-page-tab-${tab.id} per tab
• CnSettingsSection → cn-settings-section
• CnFormPage → cn-form-page
• CnLogsPage → cn-logs-page
• CnFilesPage → cn-files-page
• CnMapPage → cn-map-page
• CnWikiPage → cn-wiki-page
• CnChatPage → cn-chat-page

Lists

• CnDataTable → cn-object-list on the container, cn-object-list-loading, cn-object-list-table, cn-object-list-empty, cn-object-row + data-testid-row-id per row

Object sidebar

• CnObjectSidebar → cn-object-sidebar on the root <NcAppSidebar>; cn-object-sidebar-tab-{files,notes,tags,tasks,audit-trail} on the built-in tabs; cn-object-sidebar-tab-${id} for registry-driven and consumer tabs

Modals / dialogs — cn-modal + data-testid-modal + data-testid-phase on the visible inner section (one per phase: form/result/review/confirm/loading/list). Sits inside the dialog body, not on the teleported NcDialog root, so Playwright selectors are reliable.

• CnFormDialog, CnDeleteDialog, CnCopyDialog, CnAdvancedFormDialog, CnTabbedFormDialog, CnMassDeleteDialog, CnMassCopyDialog, CnMassExportDialog, CnMassImportDialog, CnSuggestFeatureModal, CnAiHistoryDialog

Actions

• CnActionsBar → cn-actions-bar on the root, cn-cta-primary on the Add button, cn-actions on the overflow <NcActions>
• CnContextMenu → cn-context-menu on <NcActions>; cn-action-item-${slug(label)} on each <NcActionButton>
• CnRowActions → cn-row-actions on <NcActions>; cn-action-item-${slug(label)} on each <NcActionButton>
• CnUserActionMenu → cn-user-action-menu on the root <span>

Filter / pagination

• CnFilterBar → cn-filter-bar, cn-filter-bar-search
• CnPagination → cn-pagination

AI Chat Companion

• CnAiCompanion → cn-ai-companion on the wrapper
• CnAiChatPanel → cn-ai-panel on <NcAppSidebar>; cn-ai-panel-tab-chat on the chat tab
• CnAiFloatingButton → cn-ai-fab
• CnAiInput → cn-ai-input, cn-ai-input-textarea, cn-ai-input-send
• CnAiMessageList → cn-ai-message-list

Banners

• CnLockedBanner → cn-locked-banner

Conventions

• <scope>-<element>, lowercase, kebab-case, cn- prefix (lib's namespace), per ADR-030 §4 / journeydoc-instrument SKILL.md
• Container elements + key interactive elements only — no leaf-level testids
• Inner-body placement for modals (teleported portals from NcDialog can't be reliably targeted by an attribute on the host)
• Dynamic ids bound via :data-testid=" + template literal (e.g. cn-nav-entry-${item.id}); for action menus, the action label is slugified by a small slugifyLabel() method in the same SFC (CnContextMenu, CnRowActions)

Verification

• npm run lint → 0 errors (297 warnings, all pre-existing jsdoc nits unrelated to this change)
• npm test → all 1267 tests pass across 89 suites; no snapshot updates (the repo has no snapshot tests)

Snapshot tests

Unchanged — none exist in this repo.

Skipped

• CnAppRoot's alternate phases (or-missing / loading / dependency-missing / user-settings dialog) — only the outermost root + Phase-0a get testids; the other phases already have dedicated single-purpose components (CnAppLoading, CnDependencyMissing) that are instrumented in their own files.
• Low-level layout primitives, icon-only components, and the schema-form-dialog internals were left alone — these aren't capture-spec targets.

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[github-actions]

🎉 This PR is included in version 1.0.0-beta.43 🎉

The release is available on:

• v1.0.0-beta.43
• GitHub release

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