Add comprehensive Node.js 26 release blog post

.claude/content-calendar.md

@@ -84,6 +84,7 @@
 | Checking Node.js version | COMPLETE | /blog/checking-node-js-version                           |
 | Installing Node.js       | UPDATED  | /blog/5-ways-to-install-node-js                          |
 | Docker development       | COMPLETE | /blog/node-js-development-with-docker-and-docker-compose |
+| What's new in Node.js 26 | NEW      | /blog/whats-new-in-nodejs-26                             |
 
 ---
 
@@ -130,6 +131,16 @@ Explicit Resource Management (using/await using)
     └── links to → Async Iterators (existing)
     └── links to → Event Emitter (future)
 
+What's new in Node.js 26 (NEW)
+    └── links to → Checking Node.js version (existing) — intro + related reading
+    └── links to → HTTP Requests (existing) — Temporal/dependency-drop callback, V8/Undici section, related reading
+    └── links to → Async Iterators (existing) — Iterator.concat / paginated example
+    └── links to → Stream Consumer (existing) — _stream_* breaking-changes section
+    └── links to → 5 Ways to Install Node.js (existing) — "Should you upgrade?" section
+    └── companion repo: github.com/lmammino/nodejs-26-examples (every snippet runnable)
+    └── inbound opportunities → Async Iterators, HTTP Requests, Stream Consumer, Checking Node.js version
+       (each could mention the relevant v26 update with a link back)
+
 Security Cluster (future)
     └── Path Traversal Security (hub for file security)
     └── Input Validation
@@ -165,3 +176,8 @@ Security Cluster (future)
 - `using`/`await using` (Explicit Resource Management) is TC39 Stage 3, in Node.js 20.4+.
   Most coverage is TypeScript-focused — opportunity for a Node.js-specific deep dive that
   ties naturally to the design patterns theme
+- **Node.js major-release announcements** (the v26 article) make a strong recurring slot:
+  evergreen-but-timely SEO around release time ("what's new in Node.js X" queries), and
+  they double as a hub linking back to evergreen guides (HTTP, async iterators, streams,
+  install). Plan one per even-numbered LTS major (next: v28 in April 2027). Companion
+  GitHub repo with runnable snippets is a strong differentiator.

.gitignore

@@ -22,3 +22,6 @@ pnpm-debug.log*
 
 # jetbrains setting folder
 .idea/
+
+# scratch folder for review files etc.
+.tmp/

.prettierignore

@@ -1 +1,3 @@
 .claude/
+.tmp/
+pnpm-lock.yaml

package.json

@@ -64,6 +64,7 @@
     "eslint-plugin-prettier": "5.5.4",
     "globals": "^16.3.0",
     "prettier": "3.6.2",
-    "prettier-plugin-astro": "0.14.1"
+    "prettier-plugin-astro": "0.14.1",
+    "typescript": "5.8.3"
   }
 }