fix: resolve critical deployment issues across Helm charts, Dockerfile, and K8s fallback

- Add helm/kubectl binaries and chart directory to backend Dockerfile
- Extend Helm templates for MongoDB/MariaDB database support (env vars, probes, ports)
- Add Redis and RabbitMQ Helm templates (deployment, service, secret, PVC)
- Add generic app-storage PVC and Fluent Bit sidecar with ES authentication
- Fix imagePullSecrets in K8s API fallback, prevent secret regeneration on redeploy
- Clean up Redis/RabbitMQ/FluentBit resources on app deletion without removing shared secrets
- Fix HelmService chartPath resolution for production Docker builds

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/helm/cloudhost-app/templates/_helpers.tpl

@@ -54,6 +54,10 @@ Database image — auto-computed from type + version if not explicitly set
   {{- .Values.database.image }}
 {{- else if eq .Values.database.type "postgresql" }}
   {{- printf "postgres:%s-alpine" .Values.database.version }}
+{{- else if eq .Values.database.type "mariadb" }}
+  {{- printf "mariadb:%s" .Values.database.version }}
+{{- else if eq .Values.database.type "mongodb" }}
+  {{- printf "mongo:%s" .Values.database.version }}
 {{- else }}
   {{- printf "mysql:%s" .Values.database.version }}
 {{- end }}
@@ -63,14 +67,20 @@ Database image — auto-computed from type + version if not explicitly set
 Database port
 */}}
 {{- define "cloudhost-app.dbPort" -}}
-{{- if eq .Values.database.type "postgresql" }}5432{{- else }}3306{{- end }}
+{{- if eq .Values.database.type "postgresql" }}5432
+{{- else if eq .Values.database.type "mongodb" }}27017
+{{- else }}3306
+{{- end }}
 {{- end }}
 
 {{/*
 Database data mount path (volume mount target)
 */}}
 {{- define "cloudhost-app.dbDataPath" -}}
-{{- if eq .Values.database.type "postgresql" }}/var/lib/postgresql/data{{- else }}/var/lib/mysql{{- end }}
+{{- if eq .Values.database.type "postgresql" }}/var/lib/postgresql/data
+{{- else if eq .Values.database.type "mongodb" }}/data/db
+{{- else }}/var/lib/mysql
+{{- end }}
 {{- end }}
 
 {{/*
@@ -79,3 +89,25 @@ PostgreSQL PGDATA path — must be a subdirectory of the mount to avoid "initdb:
 {{- define "cloudhost-app.pgDataDir" -}}
 /var/lib/postgresql/data/pgdata
 {{- end }}
+
+{{/*
+App storage mount path based on runtime
+*/}}
+{{- define "cloudhost-app.storageMountPath" -}}
+{{- if eq .Values.app.runtime "wordpress" }}/var/www/html/wp-content
+{{- else if or (eq .Values.app.runtime "laravel") (eq .Values.app.runtime "php") }}/var/www/html/storage
+{{- else if eq .Values.app.runtime "django" }}/app/media
+{{- else }}/app/data
+{{- end }}
+{{- end }}
+
+{{/*
+Default log paths based on runtime
+*/}}
+{{- define "cloudhost-app.defaultLogPaths" -}}
+{{- if eq .Values.app.runtime "wordpress" }}/var/www/html/wp-content/debug.log,/var/log/app/*.log
+{{- else if eq .Values.app.runtime "laravel" }}/var/www/html/storage/logs/*.log,/var/log/app/*.log
+{{- else if or (eq .Values.app.runtime "php") }}/var/www/html/storage/logs/*.log,/var/log/php/*.log,/var/log/app/*.log
+{{- else }}/var/log/app/*.log
+{{- end }}
+{{- end }}