# Module Contracts: Superset-Style UX Redesign

**Feature**: 019-superset-ux-redesign  
**Date**: 2026-02-10  
**Semantic Protocol Version**: GRACE-Poly (UX Edition)

---

## Overview

This document defines module-level contracts following the Semantic Protocol. Each module is annotated with `[DEF]` anchors, `@TIER` classification, and full Design-by-Contract (`@PRE`, `@POST`, `@UX_STATE`) specifications.

---

## Frontend Modules

### 1. SidebarStore

```javascript
// [DEF:SidebarStore:Store]
// @TIER: STANDARD
// @SEMANTICS: navigation, state-management, persistence
// @PURPOSE: Manage sidebar visibility, active navigation state, and mobile overlay behavior
// @LAYER: UI
// @RELATION: DEPENDS_ON -> localStorage
// @RELATION: BINDS_TO -> +layout.svelte
// @INVARIANT: isExpanded state is always synced with localStorage key 'sidebar_state'

// @UX_STATE: Idle -> Sidebar visible with current category highlighted
// @UX_STATE: Collapsed -> Icons-only mode, tooltips on hover
// @UX_STATE: MobileOverlay -> Full-screen overlay with backdrop, close on outside click
// @UX_STATE: Toggling -> CSS transition animation (200ms ease-in-out)

// @PRE: localStorage is available and accessible
// @PRE: defaultValue has valid shape { isExpanded: boolean, activeCategory: string, activeItem: string, isMobileOpen: boolean }

// @POST: Store always emits valid SidebarState shape
// @POST: localStorage 'sidebar_state' is updated on every state change
// @POST: isMobileOpen is reset to false when screen size changes to desktop (>=768px)

// @SIDE_EFFECT: Writes to localStorage
// @SIDE_EFFECT: Triggers CSS transitions via class binding

export const sidebarStore = persistentStore('sidebar_state', {
  isExpanded: true,
  activeCategory: 'dashboards',
  activeItem: '/dashboards',
  isMobileOpen: false
});

export function toggleSidebar() { /* ... */ }
export function setActiveCategory(category) { /* ... */ }
export function setActiveItem(path) { /* ... */ }
export function openMobileSidebar() { /* ... */ }
export function closeMobileSidebar() { /* ... */ }
// [/DEF:SidebarStore:Store]
```

---

### 2. TaskDrawerStore

```javascript
// [DEF:TaskDrawerStore:Store]
// @TIER: CRITICAL
// @SEMANTICS: task-management, resource-mapping, real-time, drawer-state
// @PURPOSE: Manage Task Drawer visibility, active task tracking, and resource-to-task associations
// @LAYER: UI
// @RELATION: DEPENDS_ON -> WebSocket connection
// @RELATION: DEPENDS_ON -> task:status events
// @RELATION: DEPENDS_ON -> task:log events
// @RELATION: BINDS_TO -> TaskDrawer.svelte
// @INVARIANT: resourceTaskMap always contains valid task associations
// @INVARIANT: When isOpen is false, activeTaskId may still reference a running task

// @UX_STATE: Closed -> Drawer hidden, Activity indicator shows active count
// @UX_STATE: Open-Loading -> Drawer visible, loading spinner for logs
// @UX_STATE: Open-Streaming -> Drawer visible, real-time log stream
// @UX_STATE: Open-InputRequired -> Interactive form rendered in drawer (PasswordPrompt, etc.)
// @UX_STATE: Open-Completed -> Task finished, success/error status displayed

// @UX_FEEDBACK: Toast notification when task completes while drawer is closed
// @UX_FEEDBACK: Activity indicator badge pulses when new tasks start
// @UX_RECOVERY: If WebSocket disconnects, show "Reconnecting..." with retry button

// @PRE: WebSocket connection is established before subscribing to task events
// @PRE: taskId passed to openDrawerForTask() is a valid UUID string
// @PRE: resourceId in updateResourceTask() matches pattern {type}:{uuid}

// @POST: After openDrawerForTask(taskId): isOpen === true && activeTaskId === taskId
// @POST: After closeDrawer(): isOpen === false, activeTaskId unchanged
// @POST: resourceTaskMap is updated when task:status events are received
// @POST: When task status changes to SUCCESS|ERROR, entry remains in map for 5 minutes then auto-cleanup

// @SIDE_EFFECT: Subscribes to WebSocket events
// @SIDE_EFFECT: May trigger browser notification for task completion

export const taskDrawerStore = writable({
  isOpen: false,
  activeTaskId: null,
  resourceTaskMap: {}  // { resourceId: { taskId, status, startedAt } }
});

export function openDrawerForTask(taskId) { /* ... */ }
export function closeDrawer() { /* ... */ }
export function updateResourceTask(resourceId, taskId, status) { /* ... */ }
export function clearCompletedTasks() { /* ... */ }
// [/DEF:TaskDrawerStore:Store]
```

---

### 3. ActivityStore

```javascript
// [DEF:ActivityStore:Store]
// @TIER: STANDARD
// @SEMANTICS: activity-indicator, derived-state, task-count
// @PURPOSE: Provide reactive count of active tasks for the navbar Activity indicator
// @LAYER: UI
// @RELATION: DEPENDS_ON -> TaskDrawerStore
// @RELATION: BINDS_TO -> TopNavbar.svelte
// @INVARIANT: activeCount is always >= 0
// @INVARIANT: activeCount equals count of RUNNING tasks in resourceTaskMap

// @UX_STATE: Idle -> Badge hidden or shows "0"
// @UX_STATE: Active-N -> Badge shows count N with pulse animation
// @UX_STATE: Active-Many -> Badge shows "9+" when count exceeds 9

// @PRE: TaskDrawerStore is initialized and emitting values

// @POST: activeCount reflects exact count of tasks with status === 'RUNNING'
// @POST: recentTasks contains last 5 tasks sorted by startedAt desc

export const activityStore = derived(
  taskDrawerStore,
  ($drawer) => {
    const tasks = Object.values($drawer.resourceTaskMap);
    const activeCount = tasks.filter(t => t.status === 'RUNNING').length;
    const recentTasks = tasks
      .sort((a, b) => new Date(b.startedAt) - new Date(a.startedAt))
      .slice(0, 5);
    return { activeCount, recentTasks };
  }
);
// [/DEF:ActivityStore:Store]
```

---

### 4. Sidebar Component

```svelte
<!-- [DEF:Sidebar:Component] -->
<!-- @TIER: CRITICAL -->
<!-- @SEMANTICS: navigation, layout, responsive -->
<!-- @PURPOSE: Persistent left sidebar with resource categories and collapsible sections -->
<!-- @LAYER: UI -->
<!-- @RELATION: DEPENDS_ON -> sidebarStore -->
<!-- @RELATION: BINDS_TO -> +layout.svelte -->
<!-- @INVARIANT: Exactly one category is marked as active at all times -->

<!-- @UX_STATE: Idle-Expanded -> Full sidebar with text labels, 240px width -->
<!-- @UX_STATE: Idle-Collapsed -> Icon-only mode, 64px width, tooltips visible -->
<!-- @UX_STATE: Mobile-Hidden -> Sidebar off-screen, hamburger button visible in TopNavbar -->
<!-- @UX_STATE: Mobile-Open -> Full overlay with backdrop, closes on outside click -->
<!-- @UX_STATE: Category-Expanded -> Sub-items visible under category -->
<!-- @UX_STATE: Category-Collapsed -> Sub-items hidden, chevron rotated -->

<!-- @UX_FEEDBACK: Active item has highlighted background and left border accent -->
<!-- @UX_FEEDBACK: Collapse/expand animation is 200ms ease-in-out -->
<!-- @UX_FEEDBACK: Mobile overlay has semi-transparent backdrop -->

<!-- @PRE: sidebarStore is initialized -->
<!-- @PRE: i18n translations are loaded for navigation labels -->

<!-- @POST: Clicking category toggles its expanded state -->
<!-- @POST: Clicking item navigates to route and sets activeItem -->
<!-- @POST: On mobile, clicking outside closes the sidebar -->

<script>
  // Props
  export let categories = [
    { id: 'dashboards', label: 'DASHBOARDS', items: [{ path: '/dashboards', label: 'Overview' }] },
    { id: 'datasets', label: 'DATASETS', items: [{ path: '/datasets', label: 'All Datasets' }] },
    { id: 'storage', label: 'STORAGE', items: [{ path: '/backups', label: 'Backups' }, { path: '/repos', label: 'Repositories' }] },
    { id: 'admin', label: 'ADMIN', items: [{ path: '/users', label: 'Users' }, { path: '/settings', label: 'Settings' }], adminOnly: true }
  ];
</script>
<!-- [/DEF:Sidebar:Component] -->
```

---

### 5. TopNavbar Component

```svelte
<!-- [DEF:TopNavbar:Component] -->
<!-- @TIER: CRITICAL -->
<!-- @SEMANTICS: global-navigation, activity-indicator, user-menu -->
<!-- @PURPOSE: Consistent top navigation bar with global search, activity indicator, and user menu -->
<!-- @LAYER: UI -->
<!-- @RELATION: DEPENDS_ON -> activityStore -->
<!-- @RELATION: DEPENDS_ON -> authStore -->
<!-- @RELATION: BINDS_TO -> +layout.svelte -->
<!-- @INVARIANT: Height is fixed at 64px across all states -->

<!-- @UX_STATE: Idle -> All elements visible, activity badge shows count or hidden -->
<!-- @UX_STATE: UserMenu-Open -> Dropdown visible with Profile, Settings, Logout -->
<!-- @UX_STATE: Search-Focused -> Search input has focus ring, placeholder visible -->
<!-- @UX_STATE: Activity-Pulse -> Badge pulses when new task starts -->

<!-- @UX_FEEDBACK: Clicking logo navigates to home (/dashboards) -->
<!-- @UX_FEEDBACK: Activity badge shows count with color: gray (0), blue (running), red (error) -->
<!-- @UX_FEEDBACK: User menu closes on outside click or Escape key -->

<!-- @PRE: User is authenticated -->
<!-- @PRE: activityStore is subscribed and emitting values -->

<!-- @POST: Clicking Activity indicator opens TaskDrawer -->
<!-- @POST: Clicking Logout clears auth state and redirects to /login -->

<script>
  // Props
  export let logoText = 'Superset Tools';
  export let searchPlaceholder = 'Search...';
</script>
<!-- [/DEF:TopNavbar:Component] -->
```

---

### 6. TaskDrawer Component

```svelte
<!-- [DEF:TaskDrawer:Component] -->
<!-- @TIER: CRITICAL -->
<!-- @SEMANTICS: task-monitoring, log-streaming, interactive-input -->
<!-- @PURPOSE: Slide-out drawer for real-time task monitoring and interaction -->
<!-- @LAYER: UI -->
<!-- @RELATION: DEPENDS_ON -> taskDrawerStore -->
<!-- @RELATION: DEPENDS_ON -> TaskLogViewer component -->
<!-- @RELATION: DEPENDS_ON -> WebSocket service -->
<!-- @RELATION: BINDS_TO -> +layout.svelte -->
<!-- @INVARIANT: Drawer width is fixed at 480px on desktop, 100% on mobile -->
<!-- @INVARIANT: Log stream auto-scrolls to bottom unless user scrolls up -->

<!-- @UX_STATE: Closed -> Drawer off-screen right, no content rendered -->
<!-- @UX_STATE: Opening -> Slide animation 150ms, content loads -->
<!-- @UX_STATE: Open-Loading -> Spinner shown while fetching initial logs -->
<!-- @UX_STATE: Open-Streaming -> Logs append in real-time with timestamps -->
<!-- @UX_STATE: Open-InputRequired -> Input form overlays log area -->
<!-- @UX_STATE: Open-Error -> Error banner at top with retry option -->

<!-- @UX_FEEDBACK: Close button (X) in top-right corner -->
<!-- @UX_FEEDBACK: Task status badge in header (color-coded) -->
<!-- @UX_FEEDBACK: Log entries have source labels (plugin, system, user) -->
<!-- @UX_RECOVERY: If task fails, show "View Details" button linking to full error -->

<!-- @PRE: taskDrawerStore.isOpen === true before rendering content -->
<!-- @PRE: WebSocket connection is active for real-time updates -->
<!-- @PRE: TaskLogViewer component is available -->

<!-- @POST: Drawer closes when clicking X, Escape key, or outside (optional) -->
<!-- @POST: Closing drawer does NOT cancel running task -->
<!-- @POST: Re-opening drawer restores previous scroll position -->

<script>
  // Props
  export let width = 480; // px
  export let closeOnOutsideClick = false;
</script>
<!-- [/DEF:TaskDrawer:Component] -->
```

---

### 7. DashboardHub Component

```svelte
<!-- [DEF:DashboardHub:Component] -->
<!-- @TIER: CRITICAL -->
<!-- @SEMANTICS: resource-hub, bulk-operations, data-grid -->
<!-- @PURPOSE: Central hub for dashboard management with bulk selection and actions -->
<!-- @LAYER: UI -->
<!-- @RELATION: DEPENDS_ON -> requestApi -->
<!-- @RELATION: DEPENDS_ON -> taskDrawerStore -->
<!-- @RELATION: CALLS -> GET /api/dashboards -->
<!-- @RELATION: DISPATCHES -> MigrationPlugin -->
<!-- @RELATION: DISPATCHES -> BackupPlugin -->
<!-- @INVARIANT: Selected dashboards persist across pagination -->

<!-- @UX_STATE: Loading -> Skeleton loaders in grid rows -->
<!-- @UX_STATE: Empty-NoEnv -> "Select an environment" message with selector -->
<!-- @UX_STATE: Empty-NoData -> "No dashboards found" with refresh button -->
<!-- @UX_STATE: Idle-Grid -> Dashboard rows with checkboxes, pagination visible -->
<!-- @UX_STATE: Selecting -> Checkboxes checked, floating action panel appears -->
<!-- @UX_STATE: BulkAction-Modal -> Migration or Backup modal open -->
<!-- @UX_STATE: Task-Triggered -> TaskDrawer opens automatically -->

<!-- @UX_FEEDBACK: Row hover highlights entire row -->
<!-- @UX_FEEDBACK: Git status icon: green check (synced), orange diff (changes), gray (none) -->
<!-- @UX_FEEDBACK: Last task status: badge with color (green=success, red=error, blue=running) -->
<!-- @UX_FEEDBACK: Floating panel slides up from bottom when items selected -->
<!-- @UX_RECOVERY: Failed environment connection shows error banner with retry -->

<!-- @PRE: User has permission plugin:migration:execute for Migrate action -->
<!-- @PRE: User has permission plugin:backup:execute for Backup action -->
<!-- @PRE: At least one environment is configured -->

<!-- @POST: Clicking status badge opens TaskDrawer with that task -->
<!-- @POST: Bulk Migrate opens modal with source (read-only), target selector, db mappings -->
<!-- @POST: Bulk Backup opens modal with schedule options (one-time or cron) -->
<!-- @POST: Search filters results in real-time (debounced 300ms) -->
<!-- @POST: Pagination preserves selected items across page changes -->

<script>
  // State
  let dashboards = [];
  let selectedIds = new Set();
  let currentPage = 1;
  let pageSize = 10;
  let searchQuery = '';
  let environmentId = null;
</script>
<!-- [/DEF:DashboardHub:Component] -->
```

---

### 8. DatasetHub Component

```svelte
<!-- [DEF:DatasetHub:Component] -->
<!-- @TIER: CRITICAL -->
<!-- @SEMANTICS: resource-hub, semantic-mapping, documentation -->
<!-- @PURPOSE: Central hub for dataset management with column mapping and documentation generation -->
<!-- @LAYER: UI -->
<!-- @RELATION: DEPENDS_ON -> requestApi -->
<!-- @RELATION: DEPENDS_ON -> taskDrawerStore -->
<!-- @RELATION: CALLS -> GET /api/datasets -->
<!-- @RELATION: DISPATCHES -> MapperPlugin -->
<!-- @RELATION: DISPATCHES -> LLMAnalysisPlugin -->
<!-- @INVARIANT: Mapped % is calculated as (mapped_columns / total_columns) * 100 -->

<!-- @UX_STATE: Loading -> Skeleton loaders in grid rows -->
<!-- @UX_STATE: Empty-NoEnv -> "Select an environment" message -->
<!-- @UX_STATE: Empty-NoData -> "No datasets found" -->
<!-- @UX_STATE: Idle-Grid -> Dataset rows with metadata columns -->
<!-- @UX_STATE: Selecting -> Floating panel with Map Columns, Generate Docs, Validate -->
<!-- @UX_STATE: Detail-View -> Expanded row or modal with table breakdown -->

<!-- @UX_FEEDBACK: Mapped % column shows progress bar + percentage text -->
<!-- @UX_FEEDBACK: Tables column shows count of SQL tables extracted -->
<!-- @UX_FEEDBACK: Columns column shows "X/Y" format (mapped/total) -->
<!-- @UX_FEEDBACK: Start Mapping button is disabled until valid source is configured -->
<!-- @UX_RECOVERY: Failed mapping shows error toast with "Retry" action -->

<!-- @PRE: User has permission plugin:mapper:execute for Map Columns -->
<!-- @PRE: User has permission plugin:llm_analysis:execute for Generate Docs -->
<!-- @PRE: LLM providers are configured for documentation generation -->

<!-- @POST: Clicking dataset name opens detail view with tables breakdown -->
<!-- @POST: Map Columns modal shows source selection (PostgreSQL or XLSX) -->
<!-- @POST: Generate Docs modal shows LLM provider selection and options -->
<!-- @POST: Search filters by name, schema, and table names -->

<script>
  // State
  let datasets = [];
  let selectedIds = new Set();
  let currentPage = 1;
  let pageSize = 10;
  let searchQuery = '';
  let environmentId = null;
</script>
<!-- [/DEF:DatasetHub:Component] -->
```

---

### 9. Breadcrumbs Component

```svelte
<!-- [DEF:Breadcrumbs:Component] -->
<!-- @TIER: STANDARD -->
<!-- @SEMANTICS: navigation, hierarchy, wayfinding -->
<!-- @PURPOSE: Show page hierarchy and allow navigation to parent levels -->
<!-- @LAYER: UI -->
<!-- @RELATION: DEPENDS_ON -> $page store from $app/stores -->
<!-- @INVARIANT: Home is always first item, current page is last item -->

<!-- @UX_STATE: Short-Path -> All items visible (<= 3 levels) -->
<!-- @UX_STATE: Long-Path -> Middle items truncated with ellipsis (...) -->

<!-- @UX_FEEDBACK: Clickable items have hover underline -->
<!-- @UX_FEEDBACK: Current page (last item) is not clickable, shown in bold -->

<!-- @PRE: Route structure is defined and consistent -->

<!-- @POST: Clicking breadcrumb navigates to that level -->
<!-- @POST: Deep paths (>3 levels) truncate middle segments -->

<script>
  // Props
  export let items = []; // [{ label: string, path: string | null }]
  export let maxVisible = 3;
</script>
<!-- [/DEF:Breadcrumbs:Component] -->
```

---

## Backend Modules

### 10. Dashboards API

```python
# [DEF:DashboardsAPI:Module]
# @TIER: CRITICAL
# @SEMANTICS: rest-api, resource-fetching, git-integration
# @PURPOSE: API endpoints for Dashboard Hub - list dashboards with metadata
# @LAYER: Domain
# @RELATION: DEPENDS_ON -> superset_client
# @RELATION: DEPENDS_ON -> git_service
# @RELATION: DEPENDS_ON -> task_manager
# @RELATION: CALLS -> Superset API /api/v1/dashboard/

# @PRE: env_id parameter is valid UUID of existing environment
# @PRE: User has permission to read dashboards from specified environment

# @POST: Response includes all dashboards accessible in environment
# @POST: Each dashboard has git_status with branch and sync_status
# @POST: Each dashboard has last_task with most recent task status
# @POST: Search parameter filters by title and slug (case-insensitive)

# Endpoint: GET /api/dashboards
# Query: env_id (required), search (optional)
# Response: { dashboards: [...] }

# Endpoint: POST /api/dashboards/migrate
# Body: { source_env_id, target_env_id, dashboard_ids, db_mappings }
# Response: { task_id }

# Endpoint: POST /api/dashboards/backup
# Body: { env_id, dashboard_ids, schedule (optional cron) }
# Response: { task_id }
# [/DEF:DashboardsAPI:Module]
```

---

### 11. Datasets API

```python
# [DEF:DatasetsAPI:Module]
# @TIER: CRITICAL
# @SEMANTICS: rest-api, dataset-metadata, column-mapping
# @PURPOSE: API endpoints for Dataset Hub - list datasets with mapping info
# @LAYER: Domain
# @RELATION: DEPENDS_ON -> superset_client
# @RELATION: DEPENDS_ON -> mapping_service
# @RELATION: DEPENDS_ON -> task_manager
# @RELATION: CALLS -> Superset API /api/v1/dataset/

# @PRE: env_id parameter is valid UUID of existing environment
# @PRE: User has permission to read datasets from specified environment

# @POST: Response includes all datasets accessible in environment
# @POST: Each dataset has mapped_fields count (mapped/total)
# @POST: Each dataset has extracted SQL table names
# @POST: Search filters by table_name, schema, and extracted table names

# Endpoint: GET /api/datasets
# Query: env_id (required), search (optional)
# Response: { datasets: [...] }

# Endpoint: POST /api/datasets/map-columns
# Body: { env_id, dataset_ids, source_type, connection_id or file }
# Response: { task_id }

# Endpoint: POST /api/datasets/generate-docs
# Body: { env_id, dataset_ids, llm_provider, options }
# Response: { task_id }
# [/DEF:DatasetsAPI:Module]
```

---

### 12. Activity API

```python
# [DEF:ActivityAPI:Module]
# @TIER: STANDARD
# @SEMANTICS: rest-api, activity-summary, task-metrics
# @PURPOSE: Provide activity summary for navbar indicator
# @LAYER: Domain
# @RELATION: DEPENDS_ON -> task_manager
# @RELATION: CALLS -> task_manager.get_active_tasks()

# @PRE: User is authenticated

# @POST: Returns count of RUNNING tasks
# @POST: Returns last 5 tasks sorted by started_at desc
# @POST: Tasks include resource_name and resource_type for display

# Endpoint: GET /api/activity
# Response: { active_count: number, recent_tasks: [...] }
# [/DEF:ActivityAPI:Module]
```

---

### 13. ResourceService

```python
# [DEF:ResourceService:Class]
# @TIER: STANDARD
# @SEMANTICS: service-layer, shared-logic, resource-fetching
# @PURPOSE: Shared logic for fetching resources from Superset with caching
# @LAYER: Domain
# @RELATION: DEPENDS_ON -> superset_client
# @RELATION: DEPENDS_ON -> ConfigManager
# @INVARIANT: All methods accept env_id and resolve via ConfigManager

# @PRE: env_id corresponds to valid Environment configuration
# @PRE: ConfigManager returns valid Superset connection params

# @POST: Returns normalized resource data structure
# @POST: Handles connection errors gracefully with meaningful messages
# @POST: Caches results for 30 seconds to reduce API load

class ResourceService:
    async def fetch_dashboards(env_id: str, search: str = None) -> list[Dashboard]: ...
    async def fetch_datasets(env_id: str, search: str = None) -> list[Dataset]: ...
    async def get_git_status(env_id: str, resource_id: str) -> GitStatus: ...
    async def get_last_task(resource_type: str, resource_id: str) -> TaskSummary: ...
# [/DEF:ResourceService:Class]
```

---

## Contract Compliance Matrix

| Module | TIER | @PRE/@POST | @UX_STATE | @RELATION | Status |
|--------|------|------------|-----------|-----------|--------|
| SidebarStore | STANDARD | ✅ | ✅ | ✅ | Ready |
| TaskDrawerStore | CRITICAL | ✅ | ✅ | ✅ | Ready |
| ActivityStore | STANDARD | ✅ | ✅ | ✅ | Ready |
| Sidebar | CRITICAL | ✅ | ✅ | ✅ | Ready |
| TopNavbar | CRITICAL | ✅ | ✅ | ✅ | Ready |
| TaskDrawer | CRITICAL | ✅ | ✅ | ✅ | Ready |
| DashboardHub | CRITICAL | ✅ | ✅ | ✅ | Ready |
| DatasetHub | CRITICAL | ✅ | ✅ | ✅ | Ready |
| Breadcrumbs | STANDARD | ✅ | ✅ | ✅ | Ready |
| DashboardsAPI | CRITICAL | ✅ | N/A | ✅ | Ready |
| DatasetsAPI | CRITICAL | ✅ | N/A | ✅ | Ready |
| ActivityAPI | STANDARD | ✅ | N/A | ✅ | Ready |
| ResourceService | STANDARD | ✅ | N/A | ✅ | Ready |

---

## UX State Mapping to Components

| UX State (from ux_reference.md) | Component | @UX_STATE Tag |
|----------------------------------|-----------|---------------|
| Sidebar Expanded | Sidebar | Idle-Expanded |
| Sidebar Collapsed | Sidebar | Idle-Collapsed |
| Mobile Overlay | Sidebar | Mobile-Open |
| Task Drawer Closed | TaskDrawer | Closed |
| Task Drawer Streaming | TaskDrawer | Open-Streaming |
| Task Drawer Input Required | TaskDrawer | Open-InputRequired |
| Activity Badge Active | TopNavbar | Activity-Pulse |
| Dashboard Grid Loading | DashboardHub | Loading |
| Dashboard Grid Empty | DashboardHub | Empty-NoData |
| Bulk Selection Active | DashboardHub | Selecting |
| Migration Modal Open | DashboardHub | BulkAction-Modal |
| Dataset Grid Loading | DatasetHub | Loading |
| Dataset Detail View | DatasetHub | Detail-View |

---

## Design-by-Contract Enforcement

### Critical Modules (Full Contracts Required)

All CRITICAL tier modules MUST have:
- Complete `@PRE` conditions for all public functions
- Complete `@POST` conditions guaranteeing output
- All `@UX_STATE` transitions documented
- `@UX_FEEDBACK` and `@UX_RECOVERY` where applicable
- `@RELATION` tags for all dependencies

### Standard Modules (Basic Contracts Required)

All STANDARD tier modules MUST have:
- `@PURPOSE` declaration
- Key `@PRE` and `@POST` for main operations
- Primary `@UX_STATE` states
- `@RELATION` tags for major dependencies

---

## Constitution Compliance

| Principle | Compliance | Notes |
|-----------|------------|-------|
| I. Semantic Protocol | ✅ | All modules use [DEF] anchors and proper tagging |
| II. Everything is a Plugin | ✅ | Dashboard/Dataset hubs dispatch to existing plugins |
| III. Unified Frontend | ✅ | Uses requestApi, i18n, and component library |
| IV. Security & Access Control | ✅ | Permission checks in @PRE conditions |
| V. Independent Testability | ✅ | Each hub has defined independent test scenarios |
| VI. Asynchronous Execution | ✅ | All bulk operations return task_id, use TaskManager |
