frontend/src/app/components/filament-dialog/filament-dialog.component.html

@@ -0,0 +1,225 @@
+<!-- Filament Add/Edit Dialog — Angular Material Dialog -->
+<mat-dialog-content class="filament-dialog-content">
+
+  <!-- Dialog Title -->
+  <h2 mat-dialog-title>{{ dialogTitle() }}</h2>
+
+  <!-- Loading state for lookup data -->
+  @if (lookupsLoading()) {
+    <div class="dialog-loading" role="status" aria-label="Loading material options">
+      <mat-spinner diameter="32"></mat-spinner>
+      <p>Loading material options…</p>
+    </div>
+  }
+
+  <!-- Form -->
+  @if (!lookupsLoading()) {
+    <form [formGroup]="form" class="filament-form" (ngSubmit)="save()">
+
+      <!-- Server Error Banner -->
+      @if (serverError()) {
+        <div class="error-banner" role="alert">
+          <mat-icon aria-hidden="true">error</mat-icon>
+          <span>{{ serverError() }}</span>
+        </div>
+      }
+
+      <!-- ── Material Section ──────────────────────────────── -->
+      <div class="form-section">
+        <h3 class="section-title">Material</h3>
+
+        <!-- Base Material -->
+        <mat-form-field appearance="outline" class="form-field full-width">
+          <mat-label>Base Material</mat-label>
+          <mat-select formControlName="materialBaseId" required aria-label="Base material">
+            @for (base of materialBases(); track base.id) {
+              <mat-option [value]="base.id">{{ base.name }}</mat-option>
+            }
+          </mat-select>
+          @if (form.get('materialBaseId')!.hasError('required') && form.get('materialBaseId')!.touched) {
+            <mat-error>Base material is required</mat-error>
+          }
+        </mat-form-field>
+
+        <!-- Finish -->
+        <mat-form-field appearance="outline" class="form-field full-width">
+          <mat-label>Finish</mat-label>
+          <mat-select formControlName="materialFinishId" required aria-label="Material finish">
+            <mat-option [value]="''" disabled>Select a base material first</mat-option>
+            @for (finish of filteredFinishes(); track finish.id) {
+              <mat-option [value]="finish.id">{{ finish.name }}</mat-option>
+            }
+          </mat-select>
+          @if (form.get('materialFinishId')!.hasError('required') && form.get('materialFinishId')!.touched) {
+            <mat-error>Finish is required</mat-error>
+          }
+          @if (filteredFinishes().length === 0 && form.get('materialBaseId')!.value) {
+            <mat-hint>No finishes available for this material</mat-hint>
+          }
+        </mat-form-field>
+
+        <!-- Modifier (optional) -->
+        <mat-form-field appearance="outline" class="form-field full-width">
+          <mat-label>Modifier (optional)</mat-label>
+          <mat-select formControlName="materialModifierId" aria-label="Material modifier">
+            <mat-option [value]="null">None</mat-option>
+            @for (modifier of filteredModifiers(); track modifier.id) {
+              <mat-option [value]="modifier.id">{{ modifier.name }}</mat-option>
+            }
+          </mat-select>
+          @if (filteredModifiers().length === 0 && form.get('materialBaseId')!.value) {
+            <mat-hint>No modifiers available for this material</mat-hint>
+          }
+        </mat-form-field>
+      </div>
+
+      <!-- ── Spool Details Section ──────────────────────────── -->
+      <div class="form-section">
+        <h3 class="section-title">Spool Details</h3>
+
+        <!-- Brand -->
+        <mat-form-field appearance="outline" class="form-field full-width">
+          <mat-label>Brand</mat-label>
+          <input matInput formControlName="brand" required maxlength="200"
+                 placeholder="e.g., Bambu Lab, Polymaker" aria-label="Brand" />
+          @if (form.get('brand')!.hasError('required') && form.get('brand')!.touched) {
+            <mat-error>Brand is required</mat-error>
+          }
+        </mat-form-field>
+
+        <!-- Serial -->
+        <mat-form-field appearance="outline" class="form-field full-width">
+          <mat-label>Serial Number</mat-label>
+          <input matInput formControlName="spoolSerial" required maxlength="200"
+                 placeholder="e.g., SN-001" aria-label="Serial number" />
+          @if (form.get('spoolSerial')!.hasError('required') && form.get('spoolSerial')!.touched) {
+            <mat-error>Serial number is required</mat-error>
+          }
+        </mat-form-field>
+
+        <!-- Color Name + Color Hex (side by side) -->
+        <div class="form-row">
+          <mat-form-field appearance="outline" class="form-field">
+            <mat-label>Color Name</mat-label>
+            <input matInput formControlName="colorName" required maxlength="200"
+                   placeholder="e.g., Fire Engine Red" aria-label="Color name" />
+            @if (form.get('colorName')!.hasError('required') && form.get('colorName')!.touched) {
+              <mat-error>Color name is required</mat-error>
+            }
+          </mat-form-field>
+
+          <mat-form-field appearance="outline" class="form-field color-hex-field">
+            <mat-label>Color Hex</mat-label>
+            <input matInput formControlName="colorHex" required
+                   placeholder="#FF0000" maxlength="7" aria-label="Color hex code" />
+            <span matTextSuffix class="color-preview">
+              <span class="color-swatch-mini" [style.background-color]="form.get('colorHex')!.value"></span>
+            </span>
+            @if (form.get('colorHex')!.hasError('required') && form.get('colorHex')!.touched) {
+              <mat-error>Color hex is required</mat-error>
+            }
+            @if (form.get('colorHex')!.hasError('pattern') && form.get('colorHex')!.touched) {
+              <mat-error>Must be #RRGGBB format</mat-error>
+            }
+          </mat-form-field>
+        </div>
+      </div>
+
+      <!-- ── Weight & Dimensions Section ────────────────────── -->
+      <div class="form-section">
+        <h3 class="section-title">Weight &amp; Dimensions</h3>
+
+        <div class="form-row">
+          <!-- Diameter -->
+          <mat-form-field appearance="outline" class="form-field">
+            <mat-label>Diameter (mm)</mat-label>
+            <input matInput type="number" formControlName="filamentDiameterMm" required
+                   min="0.1" max="10" step="0.01" aria-label="Filament diameter in mm" />
+            @if (form.get('filamentDiameterMm')!.hasError('required') && form.get('filamentDiameterMm')!.touched) {
+              <mat-error>Diameter is required</mat-error>
+            }
+          </mat-form-field>
+        </div>
+
+        <div class="form-row">
+          <!-- Total Weight -->
+          <mat-form-field appearance="outline" class="form-field">
+            <mat-label>Total Weight (g)</mat-label>
+            <input matInput type="number" formControlName="weightTotalGrams" required
+                   min="0.01" max="100000" step="1" aria-label="Total spool weight in grams" />
+            <mat-hint>Full spool weight</mat-hint>
+            @if (form.get('weightTotalGrams')!.hasError('required') && form.get('weightTotalGrams')!.touched) {
+              <mat-error>Total weight is required</mat-error>
+            }
+          </mat-form-field>
+
+          <!-- Remaining Weight -->
+          <mat-form-field appearance="outline" class="form-field">
+            <mat-label>Remaining Weight (g)</mat-label>
+            <input matInput type="number" formControlName="weightRemainingGrams" required
+                   min="0" max="100000" step="1" aria-label="Remaining weight in grams" />
+            <mat-hint>Current remaining</mat-hint>
+            @if (form.get('weightRemainingGrams')!.hasError('required') && form.get('weightRemainingGrams')!.touched) {
+              <mat-error>Remaining weight is required</mat-error>
+            }
+            @if (form.get('weightRemainingGrams')!.hasError('exceedsTotal')) {
+              <mat-error>Cannot exceed total weight</mat-error>
+            }
+          </mat-form-field>
+        </div>
+      </div>
+
+      <!-- ── Purchase & Status Section ──────────────────────── -->
+      <div class="form-section">
+        <h3 class="section-title">Purchase &amp; Status</h3>
+
+        <div class="form-row">
+          <!-- Purchase Price -->
+          <mat-form-field appearance="outline" class="form-field">
+            <mat-label>Price</mat-label>
+            <input matInput type="number" formControlName="purchasePrice"
+                   min="0" max="1000000" step="0.01"
+                   placeholder="e.g., 25.00" aria-label="Purchase price" />
+            <span matTextSuffix>$</span>
+            @if (form.get('purchasePrice')!.hasError('min') && form.get('purchasePrice')!.touched) {
+              <mat-error>Price must be non-negative</mat-error>
+            }
+          </mat-form-field>
+
+          <!-- Purchase Date -->
+          <mat-form-field appearance="outline" class="form-field">
+            <mat-label>Purchase Date</mat-label>
+            <input matInput [matDatepicker]="picker" formControlName="purchaseDate"
+                   aria-label="Purchase date" />
+            <mat-datepicker-toggle matIconSuffix [for]="picker"></mat-datepicker-toggle>
+            <mat-datepicker #picker></mat-datepicker>
+          </mat-form-field>
+        </div>
+
+        <!-- Active Status -->
+        <div class="checkbox-row">
+          <mat-checkbox formControlName="isActive" aria-label="Active status">
+            Spool is active and available for use
+          </mat-checkbox>
+        </div>
+      </div>
+
+    </form>
+  }
+
+</mat-dialog-content>
+
+<!-- Dialog Actions -->
+<mat-dialog-actions align="end">
+  <button mat-button type="button" (click)="cancel()" [disabled]="saving()"
+          aria-label="Cancel">
+    Cancel
+  </button>
+  <button mat-raised-button color="primary" type="button" (click)="save()"
+          [disabled]="saving() || form.invalid" aria-label="Save filament">
+    @if (saving()) {
+      <mat-spinner diameter="20" class="btn-spinner"></mat-spinner>
+    }
+    {{ isEditMode() ? 'Save Changes' : 'Add Filament' }}
+  </button>
+</mat-dialog-actions>

frontend/src/app/components/filament-dialog/filament-dialog.component.scss

@@ -0,0 +1,175 @@
+/**
+ * Filament Dialog Styles
+ * Touch-optimized for kiosk (Raspberry Pi 5) and mobile PWA
+ */
+
+$touch-target-min: 48px;
+$spacing-unit: 8px;
+$color-error: #ef4444;
+
+// ── Dialog Layout ──────────────────────────────────────────
+
+.filament-dialog-content {
+  overflow-y: auto;
+  max-height: 70vh;
+  padding: 0 $spacing-unit * 2;
+
+  @media (max-width: 480px) {
+    padding: 0 $spacing-unit;
+  }
+}
+
+[mat-dialog-title] {
+  margin: 0 0 $spacing-unit * 2 0;
+  padding: $spacing-unit * 2 0 0 0;
+  font-size: 20px;
+  font-weight: 600;
+}
+
+// ── Loading State ──────────────────────────────────────────
+
+.dialog-loading {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  padding: 48px $spacing-unit * 2;
+  color: var(--mat-sys-on-surface-variant);
+
+  p {
+    margin-top: $spacing-unit * 2;
+    font-size: 14px;
+  }
+}
+
+// ── Error Banner ───────────────────────────────────────────
+
+.error-banner {
+  display: flex;
+  align-items: center;
+  gap: $spacing-unit;
+  padding: $spacing-unit * 1.5 $spacing-unit * 2;
+  border-radius: 8px;
+  margin-bottom: $spacing-unit * 2;
+  background-color: rgba($color-error, 0.12);
+  color: $color-error;
+  border: 1px solid rgba($color-error, 0.3);
+  font-size: 14px;
+  font-weight: 500;
+
+  mat-icon {
+    font-size: 20px !important;
+    width: 20px !important;
+    height: 20px !important;
+  }
+}
+
+// ── Form Sections ──────────────────────────────────────────
+
+.form-section {
+  margin-bottom: $spacing-unit * 3;
+
+  .section-title {
+    font-size: 14px;
+    font-weight: 600;
+    text-transform: uppercase;
+    letter-spacing: 0.04em;
+    color: var(--mat-sys-on-surface-variant);
+    margin: 0 0 $spacing-unit * 1.5 0;
+    padding-bottom: $spacing-unit * 0.5;
+    border-bottom: 1px solid var(--mat-sys-outline-variant);
+  }
+}
+
+.filament-form {
+  display: flex;
+  flex-direction: column;
+  gap: $spacing-unit;
+}
+
+// ── Form Fields ────────────────────────────────────────────
+
+.form-field {
+  width: 100%;
+
+  // Touch target sizing
+  .mat-mdc-form-field-subscript-wrapper {
+    min-height: 20px;
+  }
+}
+
+.form-row {
+  display: flex;
+  gap: $spacing-unit * 2;
+  width: 100%;
+
+  .form-field {
+    flex: 1;
+  }
+
+  @media (max-width: 480px) {
+    flex-direction: column;
+    gap: 0;
+  }
+}
+
+// ── Color Hex Preview ──────────────────────────────────────
+
+.color-hex-field {
+  max-width: 180px;
+
+  @media (max-width: 480px) {
+    max-width: 100%;
+  }
+}
+
+.color-preview {
+  display: inline-flex;
+  align-items: center;
+  margin-left: 4px;
+}
+
+.color-swatch-mini {
+  display: inline-block;
+  width: 20px;
+  height: 20px;
+  border-radius: 4px;
+  border: 1px solid rgba(0, 0, 0, 0.12);
+  vertical-align: middle;
+}
+
+// ── Checkbox Row ───────────────────────────────────────────
+
+.checkbox-row {
+  display: flex;
+  align-items: center;
+  padding: $spacing-unit 0;
+
+  mat-checkbox {
+    min-height: $touch-target-min;
+    display: flex;
+    align-items: center;
+  }
+}
+
+// ── Save Button Spinner ────────────────────────────────────
+
+mat-dialog-actions {
+  padding: $spacing-unit $spacing-unit * 2 $spacing-unit * 2;
+  gap: $spacing-unit;
+
+  button {
+    min-height: $touch-target-min;
+    min-width: 100px;
+  }
+}
+
+.btn-spinner {
+  display: inline-block;
+  margin-right: $spacing-unit;
+  vertical-align: middle;
+
+  circle {
+    stroke: currentColor;
+  }
+}

frontend/src/app/components/filament-dialog/filament-dialog.component.ts

@@ -0,0 +1,277 @@
+import {
+  ChangeDetectionStrategy,
+  Component,
+  inject,
+  signal,
+  computed,
+} from '@angular/core';
+import { CommonModule } from '@angular/common';
+import { FormsModule, ReactiveFormsModule, FormBuilder, FormGroup, Validators } from '@angular/forms';
+import { MatDialogRef, MAT_DIALOG_DATA, MatDialogModule } from '@angular/material/dialog';
+import { MatFormFieldModule } from '@angular/material/form-field';
+import { MatInputModule } from '@angular/material/input';
+import { MatSelectModule } from '@angular/material/select';
+import { MatDatepickerModule } from '@angular/material/datepicker';
+import { MatNativeDateModule } from '@angular/material/core';
+import { MatCheckboxModule } from '@angular/material/checkbox';
+import { MatButtonModule } from '@angular/material/button';
+import { MatIconModule } from '@angular/material/icon';
+import { MatProgressSpinnerModule } from '@angular/material/progress-spinner';
+import { MatTooltipModule } from '@angular/material/tooltip';
+
+import { Filament } from '../../models/filament.model';
+import {
+  MaterialBase,
+  MaterialFinish,
+  MaterialModifier,
+} from '../../models/material.model';
+import {
+  FilamentService,
+  CreateFilamentRequest,
+  UpdateFilamentRequest,
+} from '../../services/filament.service';
+
+/** Data passed into the dialog from the opener. */
+export interface FilamentDialogData {
+  /** If provided, the dialog opens in edit mode with pre-populated fields. */
+  filament?: Filament;
+}
+
+@Component({
+  selector: 'app-filament-dialog',
+  standalone: true,
+  imports: [
+    CommonModule,
+    FormsModule,
+    ReactiveFormsModule,
+    MatDialogModule,
+    MatFormFieldModule,
+    MatInputModule,
+    MatSelectModule,
+    MatDatepickerModule,
+    MatNativeDateModule,
+    MatCheckboxModule,
+    MatButtonModule,
+    MatIconModule,
+    MatProgressSpinnerModule,
+    MatTooltipModule,
+  ],
+  templateUrl: './filament-dialog.component.html',
+  styleUrl: './filament-dialog.component.scss',
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class FilamentDialogComponent {
+  private readonly dialogRef = inject(MatDialogRef<FilamentDialogComponent>);
+  private readonly data = inject<FilamentDialogData>(MAT_DIALOG_DATA);
+  private readonly fb = inject(FormBuilder);
+  private readonly filamentService = inject(FilamentService);
+
+  /** Whether this dialog is in edit mode (has existing filament data). */
+  readonly isEditMode = computed(() => !!this.data.filament);
+
+  /** Dialog title based on mode. */
+  readonly dialogTitle = computed(() =>
+    this.isEditMode() ? 'Edit Filament' : 'Add Filament'
+  );
+
+  // ── Lookup data signals ──────────────────────────────────
+
+  /** All material bases for the base material dropdown. */
+  readonly materialBases = signal<MaterialBase[]>([]);
+
+  /** Material finishes filtered by selected base material. */
+  readonly filteredFinishes = signal<MaterialFinish[]>([]);
+
+  /** Material modifiers filtered by selected base material. */
+  readonly filteredModifiers = signal<MaterialModifier[]>([]);
+
+  /** Whether material lookups are loading. */
+  readonly lookupsLoading = signal(true);
+
+  /** Whether the save operation is in progress. */
+  readonly saving = signal(false);
+
+  /** Server error message, if any. */
+  readonly serverError = signal<string | null>(null);
+
+  // ── Form ─────────────────────────────────────────────────
+
+  readonly form: FormGroup = this.fb.group({
+    materialBaseId: ['', Validators.required],
+    materialFinishId: ['', Validators.required],
+    materialModifierId: [null],
+    brand: ['', [Validators.required, Validators.maxLength(200)]],
+    colorName: ['', [Validators.required, Validators.maxLength(200)]],
+    colorHex: ['#000000', [Validators.required, Validators.pattern(/^#[0-9A-Fa-f]{6}$/)]],
+    weightTotalGrams: [1000, [Validators.required, Validators.min(0.01), Validators.max(100000)]],
+    weightRemainingGrams: [1000, [Validators.required, Validators.min(0), Validators.max(100000)]],
+    filamentDiameterMm: [1.75, [Validators.required, Validators.min(0.1), Validators.max(10)]],
+    spoolSerial: ['', [Validators.required, Validators.maxLength(200)]],
+    purchasePrice: [null, [Validators.min(0), Validators.max(1000000)]],
+    purchaseDate: [null],
+    isActive: [true],
+  });
+
+  constructor() {
+    this.loadLookups();
+    this.patchFormIfEditing();
+    this.setupCascadingFilters();
+  }
+
+  // ── Data loading ─────────────────────────────────────────
+
+  /** Load material bases, finishes, and modifiers for dropdowns. */
+  private loadLookups(): void {
+    this.lookupsLoading.set(true);
+    this.filamentService.getMaterialBases().subscribe({
+      next: (bases) => {
+        this.materialBases.set(bases);
+        this.lookupsLoading.set(false);
+      },
+      error: () => {
+        this.lookupsLoading.set(false);
+        this.serverError.set('Failed to load material options. Please try again.');
+      },
+    });
+  }
+
+  /** Pre-populate form fields when editing an existing filament. */
+  private patchFormIfEditing(): void {
+    if (this.data.filament) {
+      const f = this.data.filament;
+      this.form.patchValue({
+        materialBaseId: f.materialBaseId,
+        materialFinishId: f.materialFinishId,
+        materialModifierId: f.materialModifierId,
+        brand: f.brand,
+        colorName: f.colorName,
+        colorHex: f.colorHex,
+        weightTotalGrams: f.weightTotalGrams,
+        weightRemainingGrams: f.weightRemainingGrams,
+        filamentDiameterMm: f.filamentDiameterMm,
+        spoolSerial: f.spoolSerial,
+        purchasePrice: f.purchasePrice,
+        purchaseDate: f.purchaseDate ? new Date(f.purchaseDate) : null,
+        isActive: f.isActive,
+      });
+    }
+  }
+
+  /** Set up cascading filter: when base material changes, reload finishes & modifiers. */
+  private setupCascadingFilters(): void {
+    this.form.get('materialBaseId')!.valueChanges.subscribe((baseId: string | null) => {
+      // Clear dependent selections when base changes
+      this.form.get('materialFinishId')!.setValue('');
+      this.form.get('materialModifierId')!.setValue(null);
+      this.filteredFinishes.set([]);
+      this.filteredModifiers.set([]);
+
+      if (!baseId) return;
+
+      this.filamentService.getMaterialFinishes(baseId).subscribe({
+        next: (finishes) => this.filteredFinishes.set(finishes),
+        error: () => this.filteredFinishes.set([]),
+      });
+
+      this.filamentService.getMaterialModifiers(baseId).subscribe({
+        next: (modifiers) => this.filteredModifiers.set(modifiers),
+        error: () => this.filteredModifiers.set([]),
+      });
+    });
+
+    // If editing, trigger the cascading load for the pre-selected base
+    if (this.data.filament) {
+      const baseId = this.data.filament.materialBaseId;
+      // We need to load finishes and modifiers for the pre-selected base
+      // but also re-select the original finish and modifier after loading
+      this.filamentService.getMaterialFinishes(baseId).subscribe({
+        next: (finishes) => {
+          this.filteredFinishes.set(finishes);
+          // Re-patch finish after load
+          this.form.get('materialFinishId')!.setValue(this.data.filament!.materialFinishId);
+        },
+      });
+      this.filamentService.getMaterialModifiers(baseId).subscribe({
+        next: (modifiers) => {
+          this.filteredModifiers.set(modifiers);
+          // Re-patch modifier after load
+          this.form.get('materialModifierId')!.setValue(this.data.filament!.materialModifierId);
+        },
+      });
+    }
+  }
+
+  // ── Actions ──────────────────────────────────────────────
+
+  /** Cancel and close the dialog without saving. */
+  cancel(): void {
+    this.dialogRef.close(false);
+  }
+
+  /** Submit the form — creates or updates the filament. */
+  save(): void {
+    if (this.form.invalid) {
+      this.form.markAllAsTouched();
+      return;
+    }
+
+    // Cross-field validation: remaining weight must not exceed total weight
+    const total = this.form.value.weightTotalGrams;
+    const remaining = this.form.value.weightRemainingGrams;
+    if (remaining > total) {
+      this.form.get('weightRemainingGrams')!.setErrors({ exceedsTotal: true });
+      return;
+    }
+
+    this.saving.set(true);
+    this.serverError.set(null);
+
+    const formValue = this.form.value;
+    const request: CreateFilamentRequest | UpdateFilamentRequest = {
+      materialBaseId: formValue.materialBaseId,
+      materialFinishId: formValue.materialFinishId,
+      materialModifierId: formValue.materialModifierId || null,
+      brand: formValue.brand.trim(),
+      colorName: formValue.colorName.trim(),
+      colorHex: formValue.colorHex,
+      weightTotalGrams: formValue.weightTotalGrams,
+      weightRemainingGrams: formValue.weightRemainingGrams,
+      filamentDiameterMm: formValue.filamentDiameterMm,
+      spoolSerial: formValue.spoolSerial.trim(),
+      purchasePrice: formValue.purchasePrice ?? null,
+      purchaseDate: formValue.purchaseDate
+        ? new Date(formValue.purchaseDate).toISOString()
+        : null,
+      isActive: formValue.isActive,
+    };
+
+    if (this.isEditMode()) {
+      const id = this.data.filament!.id;
+      this.filamentService.updateFilament(id, request).subscribe({
+        next: (updated) => {
+          this.saving.set(false);
+          this.dialogRef.close(true);
+        },
+        error: (err) => {
+          this.saving.set(false);
+          this.serverError.set(
+            err?.error?.error || err?.message || 'Failed to update filament. Please try again.'
+          );
+        },
+      });
+    } else {
+      this.filamentService.createFilament(request).subscribe({
+        next: (created) => {
+          this.saving.set(false);
+          this.dialogRef.close(true);
+        },
+        error: (err) => {
+          this.saving.set(false);
+          this.serverError.set(
+            err?.error?.error || err?.message || 'Failed to create filament. Please try again.'
+          );
+        },
+      });
+    }
+  }
+}

frontend/src/app/models/material.model.ts

@@ -0,0 +1,50 @@
+/**
+ * Material lookup models matching the Extrudex backend Material DTOs.
+ * Used for populating dropdowns in the filament add/edit form.
+ */
+
+/** Material base (e.g., PLA, PETG, ABS). */
+export interface MaterialBase {
+  /** Unique identifier. */
+  id: string;
+  /** Human-readable name (e.g., "PLA", "PETG"). */
+  name: string;
+  /** Density in g/cm³. */
+  densityGperCm3: number;
+  /** Created timestamp (UTC). */
+  createdAt: string;
+  /** Updated timestamp (UTC). */
+  updatedAt: string;
+}
+
+/** Material finish (e.g., Basic, Matte, Silk). */
+export interface MaterialFinish {
+  /** Unique identifier. */
+  id: string;
+  /** Human-readable name (e.g., "Basic", "Matte"). */
+  name: string;
+  /** Foreign key to the parent material base. */
+  materialBaseId: string;
+  /** Name of the parent material base (for display). */
+  materialBaseName: string;
+  /** Created timestamp (UTC). */
+  createdAt: string;
+  /** Updated timestamp (UTC). */
+  updatedAt: string;
+}
+
+/** Material modifier (e.g., Carbon Fiber, Wood Fill). Optional. */
+export interface MaterialModifier {
+  /** Unique identifier. */
+  id: string;
+  /** Human-readable name (e.g., "Carbon Fiber"). */
+  name: string;
+  /** Foreign key to the parent material base. */
+  materialBaseId: string;
+  /** Name of the parent material base (for display). */
+  materialBaseName: string;
+  /** Created timestamp (UTC). */
+  createdAt: string;
+  /** Updated timestamp (UTC). */
+  updatedAt: string;
+}

frontend/src/app/models/paged-response.model.ts

@@ -0,0 +1,13 @@
+/**
+ * Generic paged response wrapper matching the Extrudex backend PagedResponse<T>.
+ */
+export interface PagedResponse<T> {
+  /** The items in this page. */
+  items: T[];
+  /** Total number of items across all pages. */
+  totalCount: number;
+  /** The current page number (1-based). */
+  pageNumber: number;
+  /** The number of items per page. */
+  pageSize: number;
+}

frontend/src/environments/environment.prod.ts

@@ -0,0 +1,8 @@
+/**
+ * Environment configuration for the Extrudex frontend (production).
+ * Override API URL for deployed environments.
+ */
+export const environment = {
+  production: true,
+  apiBaseUrl: '/api',
+};

frontend/src/environments/environment.ts

@@ -0,0 +1,8 @@
+/**
+ * Environment configuration for the Extrudex frontend.
+ * Replace API URL with the actual backend endpoint in production.
+ */
+export const environment = {
+  production: false,
+  apiBaseUrl: 'http://localhost:5000',
+};