Initial commit

.claude-plugin/plugin.json

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+{
+  "name": "angular",
+  "description": "A plugin to support generation of good looking and well designed api components",
+  "version": "0.0.1",
+  "author": {
+    "name": "Reto Ryter"
+  },
+  "agents": [
+    "./agents"
+  ],
+  "commands": [
+    "./commands"
+  ]
+}

README.md

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+# angular
+
+A plugin to support generation of good looking and well designed api components

commands/create-component.md

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+# UI Component Command
+
+Generate modern Angular standalone components with signals, using Spartan UI components from `libs/ui`.
+
+## Usage
+
+```
+/ui-component <component-name> <reference-description>
+```
+
+**Arguments:**
+
+- `component-name` (required): Name for the component in kebab-case (e.g., "user-card", "task-list", "metric-display")
+- `reference-description` (required): Description of what the component should do and how it should look
+
+**Examples:**
+
+```bash
+/ui-component user-card "A card component that displays user info with avatar, name, email, and a follow button"
+/ui-component metric-display "Display a metric with a large number, label, trend indicator (up/down arrow), and percentage change"
+/ui-component task-list "A list of tasks with checkboxes, due dates, priority badges, and delete buttons"
+```
+
+## Output Structure
+
+Generated files are saved to:
+
+```
+sentinel-frontend/libs/shared/ui-custom/src/lib/components/<component-name>/
+├── <component-name>.component.ts
+├── <component-name>.component.html
+└── <component-name>.component.css
+```
+
+## Instructions
+
+When this command is invoked, follow these steps:
+
+### 1. Gather Context from Angular Docs (Optional)
+
+If Context7 is available, use it to fetch relevant Angular documentation:
+
+```bash
+npx context7 search angular
+# Then use the correct project path:
+npx context7 <angular-project-path> "angular signals input output model"
+npx context7 <angular-project-path> "standalone components"
+```
+
+If Context7 is not available, proceed with the following Angular patterns:
+
+- Modern signal APIs: `signal()`, `computed()`, `effect()`
+- Input/output patterns: `input()`, `input.required()`, `output()`, `model()`
+- Standalone component syntax with `standalone: true`
+- Modern control flow: `@if`, `@for`, `@switch`, `@defer`
+- Use `inject()` for dependency injection instead of constructor injection
+
+### 2. Identify Spartan UI Components to Use
+
+Available Spartan UI components in `libs/ui`:
+
+- **Layout**: `ui-card-helm`, `ui-separator-helm`, `ui-accordion-helm`, `ui-sheet-helm`, `ui-dialog-helm`, `ui-sidebar-helm`
+- **Forms**: `ui-input-helm`, `ui-textarea-helm`, `ui-checkbox-helm`, `ui-radio-group-helm`, `ui-select-helm`, `ui-switch-helm`, `ui-slider-helm`, `ui-form-field-helm`
+- **Buttons**: `ui-button-helm`, `ui-button-group-helm`, `ui-toggle-helm`, `ui-toggle-group-helm`
+- **Data Display**: `ui-table-helm`, `ui-badge-helm`, `ui-avatar-helm`, `ui-progress-helm`, `ui-skeleton-helm`, `ui-empty-helm`
+- **Feedback**: `ui-alert-helm`, `ui-alert-dialog-helm`, `ui-tooltip-helm`, `ui-popover-helm`, `ui-hover-card-helm`, `ui-sonner-helm`, `ui-spinner-helm`
+- **Navigation**: `ui-tabs-helm`, `ui-menu-helm`, `ui-breadcrumb-helm`, `ui-pagination-helm`
+- **Utilities**: `ui-icon-helm`, `ui-label-helm`, `ui-typography-helm`, `ui-scroll-area-helm`, `ui-resizable-helm`, `ui-kbd-helm`
+
+Choose appropriate components based on the reference description.
+
+### 3. Generate Component TypeScript File
+
+Create a **standalone** component following these patterns:
+
+**Component Structure:**
+
+```typescript
+import { ChangeDetectionStrategy, Component, input, output, model, signal, computed } from '@angular/core';
+import { HlmButtonDirective } from '@spartan-ng/helm/button';
+import { HlmCardDirective, HlmCardHeaderDirective, HlmCardContentDirective } from '@spartan-ng/helm/card';
+// Import other Spartan UI components as needed
+
+@Component({
+  selector: 'app-<component-name>',
+  standalone: true,
+  imports: [
+    // List all Spartan UI components used
+    HlmButtonDirective,
+    HlmCardDirective,
+    HlmCardHeaderDirective,
+    HlmCardContentDirective,
+    // Add others as needed
+  ],
+  templateUrl: './<component-name>.component.html',
+  styleUrls: ['./<component-name>.component.css'],
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class <ComponentName>Component {
+  // Use input() for read-only inputs
+  readonly title = input.required<string>();
+  readonly subtitle = input<string>('');
+
+  // Use output() for events
+  readonly clicked = output<void>();
+
+  // Use model() for two-way binding
+  readonly value = model<number>(0);
+
+  // Use signal() for internal state
+  protected readonly isExpanded = signal(false);
+
+  // Use computed() for derived state
+  protected readonly displayValue = computed(() => {
+    return `${this.title()}: ${this.value()}`;
+  });
+
+  // Methods
+  protected handleClick() {
+    this.clicked.emit();
+  }
+
+  protected toggle() {
+    this.isExpanded.update(v => !v);
+  }
+}
+```
+
+**Key Patterns:**
+
+- Use `ChangeDetectionStrategy.OnPush` for better performance
+- Use `input()` for props, `input.required()` for required props
+- Use `output()` for events
+- Use `model()` for two-way bound properties
+- Use `signal()` for internal reactive state
+- Use `computed()` for derived values
+- Use `readonly` for public API properties
+- Use `protected` for template-only methods and properties
+- Import Spartan UI directives/components, not modules
+
+### 4. Generate Component HTML Template
+
+Use modern Angular template syntax:
+
+**Control Flow:**
+
+```html
+<!-- Use @if instead of *ngIf -->
+@if (isExpanded()) {
+<div>Expanded content</div>
+}
+
+<!-- Use @for instead of *ngFor -->
+@for (item of items(); track item.id) {
+<div>{{ item.name }}</div>
+}
+
+<!-- Use @switch instead of *ngSwitchCase -->
+@switch (status()) { @case ('loading') {
+<app-spinner />
+} @case ('success') {
+<div>Success!</div>
+} @default {
+<div>Unknown status</div>
+} }
+
+<!-- Use @defer for lazy loading -->
+@defer (on viewport) {
+<heavy-component />
+} @placeholder {
+<app-skeleton />
+}
+```
+
+**Spartan UI Components:**
+Use Spartan UI components with their directive syntax:
+
+```html
+<button hlmBtn (click)="handleClick()">Click me</button>
+
+<div hlmCard>
+  <div hlmCardHeader>
+    <h3 hlmCardTitle>{{ title() }}</h3>
+    <p hlmCardDescription>{{ subtitle() }}</p>
+  </div>
+  <div hlmCardContent>
+    <!-- Content here -->
+  </div>
+</div>
+
+<input hlmInput [value]="inputValue()" (input)="updateValue($event)" />
+
+<span hlmBadge>Badge</span>
+
+<div hlmAvatar>
+  <img [src]="avatarUrl()" alt="Avatar" />
+</div>
+```
+
+### 5. Generate Component SCSS File
+
+Create minimal SCSS for custom styling:
+
+- Only add SCSS that can't be achieved with Spartan UI or Tailwind
+- Use SCSS custom properties for theming when possible
+- Keep styles scoped to the component
+- Add comments explaining custom styles
+
+```scss
+/* Custom styles that extend Spartan UI */
+:host {
+  display: block;
+}
+
+.custom-grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
+  gap: 1rem;
+}
+```
+
+### 6. Create the Component Files
+
+Use the Write tool to create all three files:
+
+1. `<component-name>.component.ts`
+2. `<component-name>.component.html`
+3. `<component-name>.component.css`
+
+<!-- TODO: fix path instruction -->
+
+Save them to: `sentinel-frontend/libs/shared/ui-custom/src/lib/components/<component-name>/`
+
+### 7. Generate Usage Example
+
+Provide a clear usage example showing:
+
+- How to import the component
+- Example template usage with all inputs/outputs
+- Common use cases
+
+Example:
+
+```typescript
+// In another component
+import { <ComponentName>Component } from '@shared/ui-custom';
+
+@Component({
+  imports: [<ComponentName>Component],
+  template: `
+    <app-<component-name>
+      [title]="myTitle"
+      [subtitle]="mySubtitle"
+      [(value)]="currentValue"
+      (clicked)="handleClick()"
+    />
+  `
+})
+export class MyComponent {
+  protected myTitle = 'Example';
+  protected mySubtitle = 'Subtitle';
+  protected currentValue = signal(42);
+
+  protected handleClick() {
+    console.log('Component clicked!');
+  }
+}
+```
+
+## Important Notes
+
+- **Always use modern Angular syntax**: signals, standalone components, new control flow
+- **No NgModules**: Components should be standalone
+- **Use inject() instead of constructor DI**: More modern and flexible
+- **Spartan UI over custom HTML**: Use Spartan UI components as building blocks
+- **OnPush change detection**: Always use for better performance
+- **Type safety**: Always provide proper TypeScript types
+- **Accessibility**: Ensure proper ARIA labels, semantic HTML, keyboard navigation
+- **Naming convention**: Components should be kebab-case, class names should be PascalCase
+- **Template syntax**: Use `@if/@for/@switch` not `*ngIf/*ngFor/*ngSwitch`
+- **Signal calls**: Remember to call signals with `()`: `mySignal()` not `mySignal`
+
+## Common Patterns
+
+### Presentational Component (Dumb Component)
+
+```typescript
+@Component({
+  selector: "app-user-card",
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class UserCardComponent {
+  // Inputs only
+  readonly user = input.required<User>();
+  readonly compact = input(false);
+
+  // Outputs only
+  readonly userClicked = output<User>();
+
+  // No internal state or business logic
+  protected handleClick() {
+    this.userClicked.emit(this.user());
+  }
+}
+```
+
+### Form Control Component
+
+```typescript
+@Component({
+  selector: "app-rating-input",
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class RatingInputComponent {
+  // Two-way binding with model()
+  readonly rating = model.required<number>();
+  readonly max = input(5);
+  readonly disabled = input(false);
+
+  protected setRating(value: number) {
+    if (!this.disabled()) {
+      this.rating.set(value);
+    }
+  }
+}
+```
+
+### Stateful Component
+
+```typescript
+@Component({
+  selector: "app-expandable-section",
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class ExpandableSectionComponent {
+  // External inputs
+  readonly title = input.required<string>();
+  readonly defaultExpanded = input(false);
+
+  // Internal state
+  protected readonly isExpanded = signal(false);
+
+  constructor() {
+    // Initialize from input
+    effect(() => {
+      this.isExpanded.set(this.defaultExpanded());
+    });
+  }
+
+  protected toggle() {
+    this.isExpanded.update((v) => !v);
+  }
+}
+```
+
+## Validation
+
+After generating the component:
+
+1. Check that all imports are correct
+2. Verify signal syntax (remember the `()` calls)
+3. Ensure proper TypeScript types
+4. Confirm Spartan UI components are used correctly
+5. Validate template syntax uses modern control flow
+6. Check that component is standalone
+7. Verify change detection strategy is OnPush
+
+## Summary Output
+
+Provide to the user:
+
+- Paths to all generated files
+- Brief description of the component
+- List of Spartan UI components used
+- Usage example
+- Any notes about customization or extension

plugin.lock.json

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