Add example config and finalize implementation

- Add example config with new fields in config.json
- All tests passing (make agent-finished successful)
- Implementation complete and validated

Co-authored-by: lpcox <15877973+lpcox@users.noreply.github.com>

Author: Copilot

config.json

@@ -14,6 +14,20 @@
         "memory": {
             "type": "local",
             "container": "mcp/memory"
+        },
+        "custom-app": {
+            "type": "stdio",
+            "container": "myorg/custom-mcp:latest",
+            "entrypoint": "/custom/entrypoint.sh",
+            "entrypointArgs": ["--verbose", "--debug"],
+            "mounts": [
+                "/host/config:/app/config:ro",
+                "/host/data:/app/data:rw"
+            ],
+            "env": {
+                "API_KEY": "${CUSTOM_API_KEY}",
+                "DEBUG": "true"
+            }
         }
     }
 }

go.mod

@@ -4,33 +4,14 @@ go 1.25.0
 
 require (
 	github.com/BurntSushi/toml v1.5.0
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/modelcontextprotocol/go-sdk v1.1.0
 	github.com/spf13/cobra v1.10.2
 	golang.org/x/term v0.38.0
-	github.com/inconshreveable/mousetrap v1.1.0 // indirect
-)
-
-require (
-	github.com/google/jsonschema-go v0.3.0 // indirect
-	github.com/inconshreveable/mousetrap v1.1.0 // indirect
-	github.com/spf13/pflag v1.0.9 // indirect
-	github.com/yosida95/uritemplate/v3 v3.0.2 // indirect
-	golang.org/x/oauth2 v0.30.0 // indirect
-	golang.org/x/sys v0.39.0 // indirect
 )
 
 require (
 	github.com/google/jsonschema-go v0.3.0 // indirect
-	github.com/inconshreveable/mousetrap v1.1.0 // indirect
-	github.com/spf13/pflag v1.0.9 // indirect
-	github.com/yosida95/uritemplate/v3 v3.0.2 // indirect
-	golang.org/x/oauth2 v0.30.0 // indirect
-	golang.org/x/sys v0.39.0 // indirect
-)
-
-require (
-	github.com/google/jsonschema-go v0.3.0 // indirect
-	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/spf13/pflag v1.0.9 // indirect
 	github.com/yosida95/uritemplate/v3 v3.0.2 // indirect
 	golang.org/x/oauth2 v0.30.0 // indirect