Add archify-vscode-ext skill: Archify diagrams and models for the Archify Diagram Viewer extension

Model tasks (validate, list, scaffold, resolve), diagram tasks (validate,
render), the bundled Archify 3.0.1 runtime and yaml parser under
scripts/vendor, references for authoring, formats and folders, and the
online-shop example model.

scripts/vendor/archify/renderers/workflow/render-workflow.mjs

@@ -0,0 +1,37 @@
+import path from 'node:path';
+import { fileURLToPath } from 'node:url';
+import { loadDiagramWithBrandMarks, writeDiagram } from '../shared/cli.mjs';
+import { throwDiagnosticError } from '../shared/diagnostics.mjs';
+import { compileWorkflow } from './workflow-compiler.mjs';
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+const { diagram: workflow, template, outPath, sourceEvidence } = await loadDiagramWithBrandMarks({
+  rendererDir: __dirname,
+  diagramType: 'workflow',
+  defaultExample: 'agent-tool-call.workflow.json'
+});
+
+const compiled = compileWorkflow({
+  workflow,
+  qualityProfile: process.env.ARCHIFY_QUALITY_PROFILE || workflow.meta?.quality_profile,
+  sourceEvidence,
+});
+
+const layoutJson = process.argv.includes('--layout-json');
+
+if (layoutJson) {
+  process.stdout.write(`${JSON.stringify(compiled.receipt, null, 2)}\n`);
+  if (!compiled.ok) process.exitCode = 1;
+} else if (!compiled.ok) {
+  throwDiagnosticError(compiled.error || 'Workflow compilation failed.', compiled.diagnostics);
+} else {
+  writeDiagram({
+    outPath,
+    template,
+    diagramType: 'workflow',
+    meta: workflow.meta,
+    svg: compiled.svg,
+    cards: workflow.cards,
+    sourceEvidence,
+  });
+}