Initial commit: Daily tech newsletter worker

A Node.js/TypeScript worker that sends daily AI-generated summaries
of tech news from X/Twitter via Nitter RSS feeds.

Features:
- Fetches tweets from 40+ curated tech accounts via Nitter RSS
- Filters and categorizes by topic (AI/ML, SWE, General Tech)
- Generates AI summaries using OpenRouter (Claude/GPT-4)
- Sends professional HTML email via Brevo SMTP
- Runs on cron schedule inside Docker container
- Instance rotation for Nitter reliability
- Graceful degradation if AI fails

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

package.json

@@ -0,0 +1,51 @@
+{
+  "name": "x-newsletter",
+  "version": "1.0.0",
+  "description": "Daily tech newsletter from X/Twitter via Nitter RSS feeds with AI summaries",
+  "main": "dist/index.js",
+  "type": "module",
+  "scripts": {
+    "build": "tsc",
+    "start": "node dist/index.js",
+    "dev": "tsx src/index.ts",
+    "run-now": "tsx src/index.ts --run-now",
+    "dry-run": "tsx src/index.ts --run-now --dry-run"
+  },
+  "keywords": [
+    "newsletter",
+    "twitter",
+    "x",
+    "rss",
+    "ai",
+    "automation"
+  ],
+  "author": "",
+  "license": "MIT",
+  "dependencies": {
+    "axios": "^1.7.9",
+    "date-fns": "^4.1.0",
+    "date-fns-tz": "^3.2.0",
+    "dotenv": "^16.4.7",
+    "he": "^1.2.0",
+    "node-cron": "^3.0.3",
+    "nodemailer": "^6.9.16",
+    "openai": "^4.77.0",
+    "pino": "^9.6.0",
+    "rss-parser": "^3.13.0",
+    "sanitize-html": "^2.14.0",
+    "zod": "^3.24.1"
+  },
+  "devDependencies": {
+    "@types/he": "^1.2.3",
+    "@types/node": "^22.10.5",
+    "@types/node-cron": "^3.0.11",
+    "@types/nodemailer": "^6.4.17",
+    "@types/sanitize-html": "^2.13.0",
+    "pino-pretty": "^13.0.0",
+    "tsx": "^4.19.2",
+    "typescript": "^5.7.2"
+  },
+  "engines": {
+    "node": ">=20.0.0"
+  }
+}