fix: update service.yaml to use new nested values format

service.yaml was still using the old flat values format (.Values.ide
and .Values.ssh) while values.yaml had been restructured to nested
objects (ide.type and ssh.enabled). This caused a type comparison
error breaking all devcontainer deployments across cpfarhood and
homeassistant namespaces.

Bumps chart version to 0.3.1.

Generated with [Claude Code](https://claude.ai/code)
via [Happy](https://happy.engineering)

Co-Authored-By: Claude <noreply@anthropic.com>
Co-Authored-By: Happy <yesreply@happy.engineering>

chart/Chart.yaml

@@ -2,5 +2,5 @@ apiVersion: v2
 name: devcontainer
 description: Antigravity Dev Container with Happy Coder AI assistant
 type: application
-version: 0.3.0
+version: 0.3.1
 appVersion: "latest"

chart/templates/service.yaml

@@ -6,13 +6,13 @@ metadata:
     {{- include "antigravity.labels" . | nindent 4 }}
 spec:
   ports:
-    {{- if ne (.Values.ide | default "vscode") "none" }}
+    {{- if ne (.Values.ide.type | default "vscode") "none" }}
     - port: 5800
       name: vnc-web
       protocol: TCP
       targetPort: vnc-web
     {{- end }}
-    {{- if .Values.ssh }}
+    {{- if .Values.ssh.enabled }}
     - port: 22
       name: ssh
       protocol: TCP