Fix deployment and add buttondown assets

- Add --legacy-peer-deps to npm ci to resolve date-fns/react-day-picker
  peer dependency conflict
- Add website/out/ to gitignore (Next.js static export output)
- Track website/buttondown/ directory with branding and email templates

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: testac974

.github/workflows/deploy-pages.yml

@@ -37,7 +37,7 @@ jobs:
 
       - name: Install dependencies
         working-directory: ./website
-        run: npm ci
+        run: npm ci --legacy-peer-deps
 
       - name: Build Next.js site
         working-directory: ./website

.gitignore

@@ -2,6 +2,7 @@
 output/
 *.pdf
 _site/
+website/out/
 
 # Dependencies
 node_modules/

website/buttondown/.buttondown.json

@@ -0,0 +1,17 @@
+{
+  "lastSync": "2026-02-08T05:34:43.396Z",
+  "syncedEmails": {
+    "6083540b-53b3-4d17-8502-1eee03ad37eb": {
+      "modified": "2026-02-08T05:34:43.396Z",
+      "localPath": "buttondown/emails/welcome-to-the-agentic-coding-playbook.md",
+      "slug": "welcome-to-the-agentic-coding-playbook",
+      "contentHash": "710050751"
+    }
+  },
+  "syncedImages": {},
+  "syncedNewsletter": {
+    "id": "18523f5d-227c-419a-b660-13258daa7794",
+    "lastSynced": "2026-02-08T05:33:43.286Z",
+    "contentHash": "-2122920049"
+  }
+}

website/buttondown/branding/branding.json

@@ -0,0 +1,11 @@
+{
+  "name": "Chris Testa",
+  "description": "The Agentic Coding Playbook",
+  "username": "agentic-coding-book",
+  "branding": {
+    "tint_color": "#0069FF",
+    "header": null,
+    "footer": null,
+    "from_name": "Agentic Coding Playbook"
+  }
+}

website/buttondown/branding/css/template.css

@@ -0,0 +1,5 @@
+/*
+ * This file is for template CSS that will be shared across emails
+ * You can include this in your custom CSS by using:
+ * @import url('template.css');
+ */

website/buttondown/emails/welcome-to-the-agentic-coding-playbook.md

@@ -0,0 +1,47 @@
+---
+id: 6083540b-53b3-4d17-8502-1eee03ad37eb
+slug: welcome-to-the-agentic-coding-playbook
+status: draft
+subject: Welcome to the Agentic Coding Playbook
+---
+
+<!-- buttondown-editor-mode: markdown -->
+
+Hey there,
+
+Thanks for subscribing! You're now on the list for updates about **The Agentic Coding Playbook**.
+
+## What you get
+
+- **Early access** to new chapters as they drop
+- **Behind-the-scenes insights** on building products with AI agents
+- **Practical patterns and tools** you can use immediately
+
+## What's available now
+
+**Part 1: Foundations** is live and ready to read:
+
+👉 [Start Reading Part 1](https://testaco.github.io/agentic-coding-book)
+
+You'll learn:
+- The **Renaissance Developer** mindset (breadth over depth)
+- What **agentic coding** actually means (beyond the hype)
+- **Architecture principles** for AI-friendly code
+- The **Digestibility Principle** (why humans and AI have the same constraints)
+- The **5 new bottlenecks** when coding gets 5-10x faster
+
+## What's coming
+
+- **Part 2: The Playbook** — The complete 6-week journey from idea to production
+- **Part 3: Patterns & Tools** — Architecture patterns, testing strategies, and the agent-friendly toolchain
+- **Part 4: Complete Example** — A real, non-trivial product built using the entire playbook
+
+I'll only email when there's something worth your time—no spam, no fluff.
+
+**The meta story:** This book was built using its own methodology. The planning docs are public. The git history shows the process. It's proof that this approach works.
+
+Thanks for being here.
+
+— Chris Testa
+Author, The Agentic Coding Playbook
+https://testaco.github.io/agentic-coding-book