fix(chart): add fetch and sequentialthinking to values schema

PR #45 added fetch and sequentialthinking MCP sidecars to values.yaml
and the deployment template but missed updating values.schema.json.
The schema has additionalProperties: false on mcp.sidecars, causing
Helm upgrade to fail with validation errors.

Also adds resourceProfile to the schema as it was missing.

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: Dev Container with AI coding agents and MCP sidecars
 type: application
-version: 0.4.6
+version: 0.4.7
 appVersion: "latest"

chart/values.schema.json

@@ -182,6 +182,12 @@
             },
             "playwright": {
               "$ref": "#/$defs/mcpSidecar"
+            },
+            "fetch": {
+              "$ref": "#/$defs/mcpSidecar"
+            },
+            "sequentialthinking": {
+              "$ref": "#/$defs/mcpSidecar"
             }
           },
           "additionalProperties": false
@@ -192,6 +198,11 @@
     "envSecretName": {
       "type": "string",
       "description": "Custom environment secret name"
+    },
+    "resourceProfile": {
+      "type": "string",
+      "enum": ["auto", "small", "medium", "large", "xlarge"],
+      "description": "Resource profile preset"
     }
   },
   "required": ["name"],
@@ -253,4 +264,4 @@
       "required": ["enabled", "image", "port", "resources"]
     }
   }
-}
+}