Applications 4 - remaining vue + loaders

[n-lark]

PR — remaining vue + loaders

• pages/application/index.vue + mixins/Application.js read the store (activeApplication; context.application becomes a pass-through like context.team) instead of local fetch; add activeApplicationId/activeApplication/setActiveApplication.

• Page Loader for the application detail; Component Loaders for sub-widgets (e.g. the instance table) so the shell stays interactive.

• Delete dead fetching in mixins/Application.js.

• Instances still load via the existing path until the Hosted Instances store lands; add the joined getter then.

• Single-application views consume the store.

• Page/Component Loaders during load.

[n-lark]

Applications Data Farm — Remaining Vue + Loaders Test Plan

Detail page (single application)

• Open an application → shell skeleton (title / tabs / content placeholders), then the detail renders with the Hosted Instances list.
• Deep-link directly to /application/:id (list never visited) → loads correctly.
• Invalid/deleted application id → redirects to page-not-found.
• Navigate app → app → header title, tabs, and instances update; no stale previous-app data.
• Delete the application from the detail page → redirects to the Applications list.
• Leave the detail page (to a non-application page) → no stale application left in context.

Create pages

• Create Instance (single + multi-step) → correct application in the breadcrumb; create succeeds and navigates.

Context pass-through

• View an instance or device → breadcrumb/context resolves the owning application.