Ship ApplicationFormIndexComponent: out-of-the-box member facing dashboard view

[baonguyenNava]

Overview

The SDK provides no member-facing dashboard component. Host apps that need a "My Applications" landing page must build their own from scratch, duplicating effort across every app that uses the SDK. This issue tracks building and shipping Strata::ApplicationFormIndexComponent as a first-class out-of-the-box solution.

Problem

The current reference documentation acknowledges this gap:

"The SDK doesn't ship a member-portal dashboard component, but the pattern used by SDK generators is template-based."

Every host app ends up writing the same index page: a heading, intro copy, a "Start new application" CTA, and a table of in-progress/submitted applications. Without a shared component, improvements (accessibility, status labeling, responsive layout) must be backported to every host app individually.

Proposed Solution

Ship Strata::ApplicationFormIndexComponent that provides a sensible default dashboard with enough configurability to cover common cases.

Proposed API

<%= render Strata::ApplicationFormIndexComponent.new(
  application_forms: @application_forms,
  new_path: new_application_form_path,
  title: t(".title"),
  intro: t(".intro"),
  new_button_text: t(".start_new")
) %>

What the component renders

Region	Behavior
Page heading (h1)	title argument
Intro paragraph	intro argument
"Start new application" button	Primary usa-button linking to new_path
In-progress applications section	Heading + Strata::US::TableComponent with columns: ID/type, created date, status, actions
Empty state	Friendly message when no applications exist

Columns (default)

Column	Source
Reference / ID	app.reference_number or app.id
Started	app.created_at (:short format)
Status	app.status.humanize
Action	"Continue" link (in-progress) / "View" link (submitted)

Acceptance Criteria

• Create Strata::ApplicationFormIndexComponent
• Renders heading, intro, CTA button, and application table from constructor args
• Delegates table rendering to Strata::US::TableComponent
• Empty state when application_forms is empty
• Status column renders accessible status badge (reuses or introduces Strata::StatusTagComponent)
• Responsive: table stacks on mobile via USWDS stacked option
• i18n: all default labels defined in gem locale file; host apps can override via constructor args
• Unit tests for: empty state, in-progress list, mixed in-progress + submitted
• Request spec in dummy app demonstrating end-to-end usage
• Document component in ui-kit-components.md

Why this is valuable

Providing an out-of-the-box dashboard view:

• Reduces SDK onboarding time — host apps get a working member dashboard on day one
• Centralizes accessibility and UX improvements in one place
• Creates a natural extension point (slots for custom columns, custom empty state) without requiring host apps to fork the entire template