A launched bundle serves under the module the runtime names (hq ADR 0193)

serveRegisteredOverStdio lists the registrations of the module named by MESH_SERVED_MODULE by
their own names and every other registration as <seat>.<verb>. Before, the first registration
was taken for the module's own, so a bundle registering its seat first listed the seat's verbs as
its own tools. Contributors are given the process's environment, the bundle's own. 0.1.4.

src/stdio/index.ts

@@ -89,13 +89,20 @@ export async function serveStdio(name: string, tools: ToolDefinition[]): Promise
   }
 }
 
+/** The word the node's runtime sets for a bundle it launches: the module it serves the bundle as
+ *  (novox/hq ADR 0193). */
+export const SERVED_AS = "MESH_SERVED_MODULE";
+
 /**
- * Serve everything registered with `registerModuleTools` over stdio: the one-line entry for a bundle
- * that already registers the way the in-process shortcut expects, so one source serves both ways.
+ * Serve everything registered with `registerModuleTools` over stdio — the launcher every TypeScript
+ * bundle the runtime serves is started through (novox/hq ADR 0193). What the module the runtime
+ * serves this bundle as registered is listed by its own name; anything registered under another
+ * name — a seat this module implements — is listed `<seat>.<verb>`, whichever was registered first.
+ * Every contributor is given this process's environment, which is the bundle's own.
  */
-export async function serveRegisteredOverStdio(): Promise<void> {
-  const groups = collectTools();
-  const name = groups[0]?.module ?? "bundle";
+export async function serveRegisteredOverStdio(as: string | undefined = process.env[SERVED_AS]): Promise<void> {
+  const groups = collectTools(process.env);
+  const name = as ?? groups[0]?.module ?? "bundle";
   const tools: ToolDefinition[] = [];
   for (const g of groups) {
     for (const t of g.tools) tools.push(g.module === name ? t : { ...t, name: `${g.module}.${t.name}` });