update README with info about discord alerter and GH action

Author: marwan37

README.md

@@ -72,6 +72,21 @@ The extension runs in two places:
 - Edit `tutorialMetadata.json`
 - Each section has steps with optional `doc` (markdown) and `code` (Python) files
 
+### 🔔 Automated Pipeline Health Checks
+
+This repo has a GitHub Actions workflow ([`.github/workflows/test-pipelines.yml`](.github/workflows/test-pipelines.yml)) that keeps our example pipelines green against the **latest ZenML release**:
+
+| What it does                                                                       | Process                                                                               |
+| ---------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------- |
+| **Runs every 24 h at 09:00 UTC** (plus on every push / PR to `main` and `develop`) | Cron trigger: `0 9 * * *`                                                             |
+| **Executes all tutorial pipelines** listed in the matrix                           | Each pipeline is run inside a fresh runner with ZenML upgraded to the newest version. |
+| **Alerts our SREs on Discord ** if any pipeline fails                              | On failure the job posts an alert to **`#sre-alerts`** via `DISCORD_WEBHOOK_SRE`.     |
+
+> The following repo secrets are set for the discord alerter:
+> `DISCORD_TOKEN_SRE`, `DISCORD_SRE_CHANNEL_ID`, and `DISCORD_WEBHOOK_SRE`.
+
+Keeping an eye on this channel lets us catch breaking changes in ZenML or our tutorial code before users do.
+
 ## 🐳 Docker Image
 
 The user-facing repository uses a pre-built Docker image for faster startup.