Add visual workflow builder, fix critical bugs, and add Arabic i18n support

src/js/workflow/nodes/font-to-outline-node.ts

@@ -0,0 +1,42 @@
+import { ClassicPreset } from 'rete';
+import { BaseWorkflowNode } from './base-node';
+import { pdfSocket } from '../sockets';
+import type { SocketData } from '../types';
+import { requirePdfInput, processBatch } from '../types';
+import { PDFDocument } from 'pdf-lib';
+import { convertFontsToOutlines } from '../../utils/ghostscript-loader.js';
+
+export class FontToOutlineNode extends BaseWorkflowNode {
+  readonly category = 'Optimize & Repair' as const;
+  readonly icon = 'ph-text-outdent';
+  readonly description = 'Convert fonts to vector outlines';
+
+  constructor() {
+    super('Font to Outline');
+    this.addInput('pdf', new ClassicPreset.Input(pdfSocket, 'PDF'));
+    this.addOutput('pdf', new ClassicPreset.Output(pdfSocket, 'Outlined PDF'));
+  }
+
+  async data(
+    inputs: Record<string, SocketData[]>
+  ): Promise<Record<string, SocketData>> {
+    const pdfInputs = requirePdfInput(inputs, 'Font to Outline');
+
+    return {
+      pdf: await processBatch(pdfInputs, async (input) => {
+        const resultBytes = await convertFontsToOutlines(
+          new Uint8Array(input.bytes)
+        );
+        const bytes = new Uint8Array(resultBytes);
+        const document = await PDFDocument.load(bytes);
+
+        return {
+          type: 'pdf',
+          document,
+          bytes,
+          filename: input.filename.replace(/\.pdf$/i, '_outline.pdf'),
+        };
+      }),
+    };
+  }
+}