Merge remote-tracking branch 'origin/v2/main' into 1579-wave-1

# Conflicts:
#	AGENTS.md
#	clients/cli/README.md
#	clients/web/src/App.test.tsx
#	clients/web/src/App.tsx
#	clients/web/src/test/core/auth/utils.test.ts
#	core/mcp/node/transport.ts
#	test-servers/src/composable-test-server.ts

test-servers/src/test-server-fixtures.ts

@@ -169,6 +169,22 @@ export function createEchoTool(): ToolDefinition {
   };
 }
 
+/**
+ * Create a "get-env" tool matching @modelcontextprotocol/server-everything.
+ * Returns the server process environment as pretty-printed JSON text.
+ */
+export function createGetEnvTool(): ToolDefinition {
+  return {
+    name: "get-env",
+    description:
+      "Returns all environment variables, helpful for debugging MCP server configuration",
+    inputSchema: {},
+    handler: async () => {
+      return toToolResult(JSON.stringify(process.env, null, 2));
+    },
+  };
+}
+
 /**
  * Create a tool that writes a message to stderr. Used to test stderr capture/piping.
  */