feat(web + backend): advanced and simple quote.

frontend/src/app/quote/advanced-quote/advanced-quote.component.ts

@@ -0,0 +1,93 @@
+import { Component, inject } from '@angular/core';
+import { CommonModule } from '@angular/common';
+import { RouterLink } from '@angular/router';
+import { FormsModule } from '@angular/forms';
+import { PrintService } from '../../print.service';
+import { StlViewerComponent } from '../../common/stl-viewer/stl-viewer.component';
+
+@Component({
+  selector: 'app-advanced-quote',
+  standalone: true,
+  imports: [CommonModule, RouterLink, FormsModule, StlViewerComponent],
+  templateUrl: './advanced-quote.component.html',
+  styleUrls: ['./advanced-quote.component.scss']
+})
+export class AdvancedQuoteComponent {
+  printService = inject(PrintService);
+  
+  selectedFile: File | null = null;
+  isDragOver = false;
+  isCalculating = false;
+  quoteResult: any = null;
+
+  // Parameters
+  params = {
+    layerHeight: '0.20',
+    infill: 15,
+    walls: 2,
+    topBottom: 3,
+    material: 'PLA'
+  };
+
+  onDragOver(event: DragEvent) {
+    event.preventDefault();
+    event.stopPropagation();
+    this.isDragOver = true;
+  }
+
+  onDragLeave(event: DragEvent) {
+    event.preventDefault();
+    event.stopPropagation();
+    this.isDragOver = false;
+  }
+
+  onDrop(event: DragEvent) {
+    event.preventDefault();
+    event.stopPropagation();
+    this.isDragOver = false;
+    
+    const files = event.dataTransfer?.files;
+    if (files && files.length > 0) {
+      if (files[0].name.toLowerCase().endsWith('.stl')) {
+        this.selectedFile = files[0];
+        this.quoteResult = null;
+      } else {
+        alert('Please upload an STL file.');
+      }
+    }
+  }
+
+  onFileSelected(event: any) {
+    const file = event.target.files[0];
+    if (file) {
+      this.selectedFile = file;
+      this.quoteResult = null;
+    }
+  }
+
+  removeFile(event: Event) {
+    event.stopPropagation();
+    this.selectedFile = null;
+    this.quoteResult = null;
+  }
+
+  calculate() {
+    if (!this.selectedFile) return;
+
+    this.isCalculating = true;
+
+    // Use PrintService
+    this.printService.calculateQuote(this.selectedFile, this.params)
+      .subscribe({
+        next: (res) => {
+          this.quoteResult = res;
+          this.isCalculating = false;
+        },
+        error: (err) => {
+          console.error(err);
+          alert('Calculation failed: ' + (err.error?.detail || err.message));
+          this.isCalculating = false;
+        }
+      });
+  }
+}