feat: introduce archify skill for generating architecture diagrams

- Added a new Archify skill, enabling users to create polished architecture, workflow, sequence, data-flow, and lifecycle diagrams.
- Implemented comprehensive functionality including rendering, validation, and delivery of diagrams in various formats.
- Integrated a user-friendly command-line interface for generating and previewing diagrams.
- Developed supporting files including package.json, LICENSE, and SKILL.md for documentation and licensing.
- Added unit tests to ensure reliability and functionality of the new skill.

These changes enhance the application by providing a structured approach to visualizing system architecture and workflows, improving user experience and data representation.

.agents/skills/archify/test/story-horizon.test.mjs

@@ -0,0 +1,89 @@
+import { test } from 'node:test';
+import assert from 'node:assert/strict';
+import { spawnSync } from 'node:child_process';
+import fs from 'node:fs';
+import os from 'node:os';
+import path from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+const skillRoot = path.resolve(__dirname, '..');
+const template = fs.readFileSync(path.join(skillRoot, 'assets', 'template.html'), 'utf8');
+const tmp = fs.mkdtempSync(path.join(os.tmpdir(), 'archify-story-horizon-'));
+
+const CASES = {
+  architecture: 'web-app.architecture.json',
+  workflow: 'agent-tool-call.workflow.json',
+  sequence: 'cache-miss-request.sequence.json',
+  dataflow: 'product-analytics.dataflow.json',
+  lifecycle: 'agent-run.lifecycle.json',
+};
+
+function render(mode, example) {
+  const output = path.join(tmp, `${mode}.html`);
+  const result = spawnSync(process.execPath, [
+    path.join(skillRoot, `renderers/${mode}/render-${mode}.mjs`),
+    path.join(skillRoot, 'examples', example),
+    output,
+  ], { encoding: 'utf8' });
+  return { result, html: fs.existsSync(output) ? fs.readFileSync(output, 'utf8') : '' };
+}
+
+test('all five renderers inherit one viewer-only Story Horizon', () => {
+  for (const [mode, example] of Object.entries(CASES)) {
+    const { result, html } = render(mode, example);
+    assert.equal(result.status, 0, result.stderr);
+    assert.match(html, /data-story-beat-state="next"/, mode);
+    assert.match(html, /step === storyBeatIndex \+ 1/, mode);
+    assert.match(html, /svg\.setAttribute\('data-story-next', nextStep\.nodeId\)/, mode);
+    assert.match(html, /panel\.setAttribute\('data-story-next', nextStep\.nodeId\)/, mode);
+    assert.match(html, /id="guided-story-caption-next" hidden aria-hidden="true"/, mode);
+    const generatedSvg = html.match(/<svg\b[\s\S]*?<\/svg>/)?.[0] || '';
+    assert.doesNotMatch(generatedSvg, /data-story-next|data-story-beat-state="next"/, mode);
+  }
+});
+
+test('the temporal hierarchy has one bounded next state and a clean final beat', () => {
+  assert.match(template, /if \(step < storyBeatIndex\) return 'past'/);
+  assert.match(template, /if \(step === storyBeatIndex\) return 'active'/);
+  assert.match(template, /if \(step === storyBeatIndex \+ 1\) return 'next'/);
+  assert.match(template, /return 'pending'/);
+  assert.match(template, /storyBeatIndex \+ 1 < storySteps\.length \? storySteps\[storyBeatIndex \+ 1\] : null/);
+  assert.match(template, /else \{\s*svg\.removeAttribute\('data-story-next'\);\s*panel\.removeAttribute\('data-story-next'\)/);
+  assert.match(template, /storyCaptionNext\.hidden = !nextStep/);
+});
+
+test('next edges reuse exact authored step membership without synthesizing topology', () => {
+  assert.match(template, /storySteps\.forEach\(function \(step\) \{\s*step\.edges\.forEach/);
+  assert.match(template, /edge\.setAttribute\('data-story-beat-step', String\(edgeBeat\)\)/);
+  assert.match(template, /edge\.setAttribute\('data-story-beat-state', storyBeatState\(step\)\)/);
+  assert.match(template, /index === 0 \? 'start' : \(!edges\.length \? 'group'/);
+  assert.match(template, /edges\.length === 1 && forward\.length === 1 \? 'forward'/);
+  assert.match(template, /edges\.length === 1 && reverse\.length === 1 \? 'reverse' : 'multiple'/);
+  assert.doesNotMatch(template, /createElementNS\([^\n]+story-horizon|data-story-horizon-edge/);
+});
+
+test('next remains static, subordinate, preset-safe, and mobile-height neutral', () => {
+  assert.match(template, /data-story-step\]\[data-story-beat-state="next"\] \{\s*opacity: 0\.5;\s*filter: saturate\(0\.66\)/);
+  assert.match(template, /data-story-beat-state="past"\] \{\s*opacity: 0\.72/);
+  assert.match(template, /data-edge-from\]\[data-story-beat-step\]\[data-story-beat-state="next"\] \{ opacity: 0\.34; \}/);
+  assert.match(template, /guided-view-stop\[data-story-beat-state="next"\][\s\S]*border-style: dashed/);
+  assert.match(template, /@media \(max-width: 720px\)[\s\S]*\.guided-story-caption-next \{ display: none; \}/);
+  const nextRules = template.match(/[^\n{]*data-story-beat-state="next"[^\n{]*\{[^}]*\}/g)?.join('\n') || '';
+  assert.doesNotMatch(nextRules, /animation:|drop-shadow|stroke-dasharray/);
+});
+
+test('Still, accessibility, teardown, and export preserve the product boundary', () => {
+  assert.match(template, /id="guided-story-caption-next" hidden aria-hidden="true"/);
+  assert.match(template, /storyCaption\.setAttribute\('aria-live', playing \? 'off' : 'polite'\)/);
+  assert.doesNotMatch(template, /storyCaptionNext\.setAttribute\('aria-live'/);
+  assert.match(template, /html\[data-motion="still"\] \[data-story-step\]/);
+  assert.match(template, /html\[data-motion="still"\] svg \[data-node-id\][\s\S]*transition: none !important/);
+  assert.match(template, /@media \(prefers-reduced-motion: reduce\)[\s\S]*\.story-trail-flow/);
+  assert.ok((template.match(/svg\.removeAttribute\('data-story-next'\)/g) || []).length >= 3);
+  assert.ok((template.match(/panel\.removeAttribute\('data-story-next'\)/g) || []).length >= 2);
+  assert.match(template, /clone\.removeAttribute\('data-story-next'\)/);
+  assert.match(template, /canonicalStateClean[\s\S]*!clone\.hasAttribute\('data-story-next'\)/);
+});
+
+process.on('exit', () => fs.rmSync(tmp, { recursive: true, force: true }));