fix more yaml document-start and comment indentation

- add missing --- to 13 more yml files
- fix comment indentation in prometheus.yml

ansible/services/grafana/provisioning/alerting/rules-critical.yml

@@ -1,3 +1,4 @@
+---
 apiVersion: 1
 
 # Tier 1 — Critical alerts. These page PagerDuty.

ansible/services/grafana/provisioning/alerting/rules-warning.yml

@@ -1,3 +1,4 @@
+---
 apiVersion: 1
 
 # Tier 2 — Warning alerts. These send email only (non-paging).

ansible/services/grafana/provisioning/dashboards/dashboards.yml

@@ -1,3 +1,4 @@
+---
 apiVersion: 1
 
 # Dashboard provisioning — tells Grafana where to find dashboard JSON files.

ansible/services/jellyseerr/docker-compose.yml

@@ -1,3 +1,4 @@
+---
 # Jellyseerr - Media request management
 # Host: london-b (100.84.65.101)
 # Data: /var/share/jellyseer

ansible/services/minecraft/docker-compose.yml

@@ -1,3 +1,4 @@
+---
 # Minecraft - PaperMC server
 # Host: copenhagen-a (100.89.206.60)
 # Data: Docker volume (minecraft_minecraftserver)

ansible/services/miniflux/docker-compose.yml

@@ -1,3 +1,4 @@
+---
 # Miniflux - RSS reader
 # Host: london-b (100.84.65.101)
 # Data: Docker volume (miniflux-db)

ansible/services/navidrome/docker-compose.yml

@@ -1,3 +1,4 @@
+---
 # Navidrome - Music streaming server
 # Host: london-b (100.84.65.101)
 # Data: /root/navidrome (config), /hdd/music (library)

ansible/services/nextcloud-aio/docker-compose.yml

@@ -1,3 +1,4 @@
+---
 # Nextcloud AIO - All-in-one Nextcloud deployment
 # Host: london-b (100.84.65.101)
 # Data: Docker volume (nextcloud_aio_mastercontainer)

ansible/services/plex-exporter/docker-compose.yml

@@ -1,3 +1,4 @@
+---
 # Plex exporter - Plex metrics for Prometheus
 # Host: london-b (100.84.65.101)
 # Access: http://london-b:9000/metrics

ansible/services/poste-io/docker-compose.yml

@@ -1,3 +1,4 @@
+---
 # Poste.io - Self-hosted mail server
 # Host: nuremberg-a (100.117.235.28)
 # Data: /root/postio/data

ansible/services/prometheus/prometheus.yml

@@ -1,3 +1,4 @@
+---
 # Prometheus configuration — extracted from london-a (FreeBSD)
 # Config file location on london-a: /usr/local/etc/prometheus.yml
 # Prometheus runs as: /usr/local/bin/prometheus --config.file=/usr/local/etc/prometheus.yml

ansible/services/slskd/docker-compose.yml

@@ -1,3 +1,4 @@
+---
 # slskd - Soulseek client (web UI)
 # Host: london-b (100.84.65.101)
 # Data: /root/slskd (app), /hdd/music/slskd (downloads)

ansible/services/smartctl-exporter/docker-compose.yml

@@ -1,3 +1,4 @@
+---
 # smartctl-exporter - SMART disk metrics for Prometheus
 # Host: london-b (100.84.65.101)
 # Access: http://london-b:9633/metrics