CUB-35: build add/edit filament modal with Angular Material Dialog

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;
+}