feat: add Playwright test agents system — interactive recorder CLI, AI agents, and codegen transform

Three integrated systems for AI-assisted browser test creation:

1. comfy-test CLI (tools/test-recorder/)
   - Interactive 7-step recording flow for QA testers and non-developers
   - Environment checks with platform-specific install guidance
   - Codegen-to-convention transform engine
   - PR creation via gh CLI or manual GitHub web UI instructions
   - Commands: record, transform, check, list

2. Playwright AI agents (.claude/agents/)
   - Planner, generator, and healer agents patched with ComfyUI context
   - Regeneration scripts for Playwright updates (scripts/update-playwright-agents.sh)
   - MCP server config (.mcp.json) for agent browser interaction
   - Seed test and specs directory for agent-generated tests

3. Codegen transform skill (.claude/skills/codegen-transform/)
   - Transform rules: @playwright/test → comfyPageFixture, page → comfyPage,
     remove goto, canvas locators, waitForTimeout → nextFrame
   - Structural transforms: wrap in describe with tags, add afterEach cleanup
   - Fixture API reference and before/after examples

browser_tests/tests/seed.spec.ts

@@ -0,0 +1,26 @@
+/**
+ * Seed test for Playwright AI agents.
+ *
+ * This test bootstraps the ComfyUI environment for agent exploration.
+ * When agents (Planner, Generator, Healer) run, they execute this test
+ * first to set up the browser state, then use it as a template for
+ * generated tests.
+ *
+ * Usage:
+ *   - Planner: Runs this to explore the app, then generates a test plan
+ *   - Generator: Uses this as an import/fixture template
+ *   - Healer: Runs this to establish baseline state
+ */
+import {
+  comfyPageFixture as test,
+  comfyExpect as expect
+} from '../fixtures/ComfyPage'
+
+test('seed', async ({ comfyPage }) => {
+  // Load the default workflow — gives agents a realistic starting state
+  await comfyPage.workflow.loadWorkflow('default')
+  await comfyPage.nextFrame()
+
+  // Verify the app is ready
+  await expect(comfyPage.canvas).toBeVisible()
+})