Move metrics scripts from ~/bin to ~/.local/bin (#70)

## Summary
- Update all metrics role defaults to install scripts to ~/.local/bin following XDG conventions
- Scripts already manually moved on indri from ~/bin to ~/.local/bin
- Cleaned up orphaned scripts (devpi-metrics, transmission-metrics, mcquack) and plist files

## Deployment and Testing
- [x] Manually moved scripts on indri
- [x] Deleted orphaned plist files (devpi-metrics, devpi, kiwix-serve, transmission-metrics)
- [x] Deleted orphaned scripts (devpi-metrics, transmission-metrics, mcquack)
- [x] Verified no metrics dependencies on orphaned scripts (checked alloy config and textfile directory)
- [ ] Run ansible to update LaunchAgent plist files with new paths
- [ ] Verify metrics collection continues working

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Reviewed-on: https://forge.ops.eblu.me/eblume/blumeops/pulls/70

ansible/roles/borgmatic_metrics/defaults/main.yml

@@ -2,6 +2,6 @@
 borgmatic_metrics_repo: /Volumes/backups/borg/
 borgmatic_metrics_passcommand: cat /Users/erichblume/.borg/config.yaml
 borgmatic_metrics_dir: /opt/homebrew/var/node_exporter/textfile
-borgmatic_metrics_script: /Users/erichblume/bin/borgmatic-metrics
+borgmatic_metrics_script: /Users/erichblume/.local/bin/borgmatic-metrics
 borgmatic_metrics_interval: 3600  # seconds between metric collection (hourly)
 borgmatic_metrics_log_dir: /opt/homebrew/var/log

ansible/roles/minikube_metrics/defaults/main.yml

@@ -1,6 +1,6 @@
 ---
 minikube_metrics_dir: /opt/homebrew/var/node_exporter/textfile
-minikube_metrics_script: /Users/erichblume/bin/minikube-metrics
+minikube_metrics_script: /Users/erichblume/.local/bin/minikube-metrics
 minikube_metrics_interval: 60  # seconds between metric collection
 minikube_metrics_log_dir: /opt/homebrew/var/log
 minikube_metrics_user_home: /Users/erichblume

ansible/roles/plex_metrics/defaults/main.yml

@@ -14,7 +14,7 @@ plex_metrics_interval: 60
 plex_metrics_dir: /opt/homebrew/var/node_exporter/textfile
 
 # Script installation path
-plex_metrics_script: /Users/erichblume/bin/plex-metrics
+plex_metrics_script: /Users/erichblume/.local/bin/plex-metrics
 
 # Log directory for metrics script output
 plex_metrics_log_dir: /opt/homebrew/var/log

ansible/roles/zot_metrics/defaults/main.yml

@@ -1,6 +1,6 @@
 ---
 zot_metrics_url: http://localhost:5050/v2/_catalog
 zot_metrics_dir: /opt/homebrew/var/node_exporter/textfile
-zot_metrics_script: /Users/erichblume/bin/zot-metrics
+zot_metrics_script: /Users/erichblume/.local/bin/zot-metrics
 zot_metrics_interval: 60  # seconds between metric collection
 zot_metrics_log_dir: /opt/homebrew/var/log