Remove all em-dashes from website content and documentation

Replace ' — ' with ', ' across 40 files. Hyphens (-) untouched.
timecapsule, stefankoelle, LICENSE, CSS comments left as-is.

smarthome/balkonpi/index.njk

@@ -13,13 +13,13 @@ layout: base.njk
 self-contained smart-balcony controller: light control, an internet
 radio player, sensor readings, and its own backup/monitoring, all on
 very modest hardware. The goal is to make the balcony a more pleasant
-space — light control when it gets dark, background music while sitting
+space, light control when it gets dark, background music while sitting
 outside, and temperature readings to know what to expect before stepping
 out.</p>
 
 <h2>What it does</h2>
 <ul>
-<li><strong>Audio output</strong> via a DIY PWM-to-analog circuit on two GPIO pins — the Pi Zero has no built-in audio jack, so this is a well-known community workaround using a small RC filter.</li>
+<li><strong>Audio output</strong> via a DIY PWM-to-analog circuit on two GPIO pins, the Pi Zero has no built-in audio jack, so this is a well-known community workaround using a small RC filter.</li>
 <li><strong>Physical controls</strong>: a push button for the balcony light and a toggle switch for music playback, read directly via GPIO.</li>
 <li><strong>HTTP communication</strong> with an ESP32-based balcony light controller.</li>
 <li><strong>Internet radio</strong> via a lightweight command-line audio player, controlled by a small custom tool ported from an earlier bathroom-Pi project.</li>
@@ -28,7 +28,7 @@ out.</p>
 <h2>Hardware details</h2>
 <p>The Pi Zero W is connected to an ESP32 microcontroller that handles
 the actual light switching via a relay module. Communication happens
-over HTTP — the Pi sends a simple request to toggle the relay, and the
+over HTTP, the Pi sends a simple request to toggle the relay, and the
 ESP32 responds with the current light state. The ESP32 also reads a
 DHT22 temperature and humidity sensor, publishing the values to MQTT
 for the home dashboard. This split makes sense: the Pi handles the
@@ -37,7 +37,7 @@ handles the real-time hardware control.</p>
 
 <h2>Monitoring & backup, even on tiny hardware</h2>
 <p>Despite the very limited RAM, this Pi still participates in the same
-Prometheus monitoring pattern as the rest of the fleet — with the metrics
+Prometheus monitoring pattern as the rest of the fleet, with the metrics
 collector's default configuration trimmed down to only the essential
 collectors, since the full default set noticeably overloaded the CPU on
 this specific board. It also runs a nightly rsync backup of its own