feat: remove Happy Coder and Node.js from devcontainer

Happy Coder is no longer used. Node.js was only installed as a
dependency for `npm install -g happy-coder`, so both are removed.
This shrinks the Docker image and simplifies the configuration.

Removed from: Dockerfile, Helm values/schema/templates, serverless
manifests, Makefile, and all documentation.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

chart/templates/deployment.yaml

@@ -80,14 +80,6 @@ spec:
               value: {{ .Values.fileManager.deniedPaths | quote }}
             {{- end }}
             {{- end }}
-            - name: HAPPY_HOME_DIR
-              value: {{ .Values.happy.homeDir | quote }}
-            - name: HAPPY_EXPERIMENTAL
-              value: {{ .Values.happy.experimental | quote }}
-            - name: HAPPY_SERVER_URL
-              value: {{ .Values.happy.serverUrl | quote }}
-            - name: HAPPY_WEBAPP_URL
-              value: {{ .Values.happy.webappUrl | quote }}
             {{- if .Values.githubRepo }}
             - name: GITHUB_REPO
               value: {{ .Values.githubRepo | quote }}

chart/templates/knative-service.yaml

@@ -59,19 +59,6 @@ spec:
           value: "1"
         - name: WEB_FILE_MANAGER_ALLOWED_PATHS
           value: "/workspace,/tmp"  # No persistent /config in dynamic mode
-        # Happy Coder (ephemeral in dynamic mode)
-        - name: HAPPY_HOME_DIR
-          value: "/tmp/.happy"
-        - name: HAPPY_EXPERIMENTAL
-          value: {{ .Values.happy.experimental | quote }}
-        {{- if .Values.happy.serverUrl }}
-        - name: HAPPY_SERVER_URL
-          value: {{ .Values.happy.serverUrl | quote }}
-        {{- end }}
-        {{- if .Values.happy.webappUrl }}
-        - name: HAPPY_WEBAPP_URL
-          value: {{ .Values.happy.webappUrl | quote }}
-        {{- end }}
         # Secret environment variables
         envFrom:
         - secretRef:

chart/values-dynamic.yaml

@@ -100,13 +100,6 @@ user:
 shm:
   sizeLimit: 2Gi
 
-# Happy Coder (ephemeral in dynamic mode)
-happy:
-  serverUrl: ""
-  webappUrl: ""
-  homeDir: "/tmp/.happy"  # Ephemeral location in dynamic mode
-  experimental: "true"
-
 # MCP sidecars are not supported in dynamic mode (Knative limitation)
 mcp:
   sidecars:

chart/values.schema.json

@@ -229,29 +229,6 @@
       "enum": ["none", "readonlyns", "readwritens", "readonly", "readwrite"],
       "description": "Kubernetes cluster access level"
     },
-    "happy": {
-      "type": "object",
-      "properties": {
-        "serverUrl": {
-          "type": "string",
-          "description": "Happy Coder server URL"
-        },
-        "webappUrl": {
-          "type": "string",
-          "description": "Happy Coder webapp URL"
-        },
-        "homeDir": {
-          "type": "string",
-          "description": "Happy Coder home directory"
-        },
-        "experimental": {
-          "type": "string",
-          "enum": ["true", "false"],
-          "description": "Enable experimental Happy features"
-        }
-      },
-      "required": ["homeDir", "experimental"]
-    },
     "mcp": {
       "type": "object",
       "properties": {

chart/values.yaml

@@ -83,13 +83,6 @@ clusterAccess: none
 # INTEGRATIONS
 # =============================================================================
 
-# Happy Coder AI assistant configuration
-happy:
-  serverUrl: ""
-  webappUrl: ""
-  homeDir: "/config/userdata/.happy"
-  experimental: "true"
-
 # MCP (Model Context Protocol) server sidecars
 mcp:
   sidecars: