Add blog post: homelab health monitoring with Discord webhooks

src/routes/posts/homelab-health-monitoring.md

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+---
+title: "Simple Homelab Health Monitoring with Discord Webhooks"
+date: "2026-02-04"
+excerpt: "A lightweight bash-based monitoring setup that sends daily system health summaries to Discord - no Prometheus required."
+---
+
+I wanted a lightweight way to keep tabs on my homelab server (HP ProDesk 600 G2) without running a full monitoring stack like Prometheus/Grafana or Netdata. The solution: a couple of bash scripts that collect stats hourly and send a daily summary to Discord.
+
+## The Setup
+
+The system has two components:
+
+**1. Collector** - Runs every hour via cron, appending CPU, memory, load, and disk usage to a daily CSV file. Data is retained for 7 days.
+
+**2. Reporter** - Runs daily at 9 AM, calculates min/avg/max from the collected samples, checks for journal errors and SSD health, then sends a formatted embed to a Discord webhook.
+
+## What Gets Monitored
+
+- CPU usage (min/avg/max over 24h)
+- Memory usage (min/avg/max over 24h)
+- Load average (min/avg/max over 24h)
+- Disk usage (current)
+- SSD SMART health status
+- System errors from journalctl
+
+The report color-codes itself: green for OK, yellow for warnings (high usage or errors present), red for critical issues.
+
+## Why This Approach?
+
+- **No dependencies** - Just bash, cron, and curl
+- **No services to manage** - Cron handles scheduling
+- **Minimal resource usage** - A few KB of CSV data per day
+- **Discord integration** - Notifications where I already am
+- **Actionable** - Only alerts on actual issues with `--errors-only` mode
+
+## Sample Output
+
+The Discord embed shows a clean summary with all the stats at a glance. If there are errors in the journal, they're included in a code block at the bottom.
+
+## Source
+
+The scripts are available at [git.jawhng.xyz/jawhng/homelab-monitoring-webhook](https://git.jawhng.xyz/jawhng/homelab-monitoring-webhook).