refactor: dedupe helpers and source seams

src/plugins/runtime/runtime-agent.ts

@@ -7,28 +7,9 @@ import { ensureAgentWorkspace } from "../../agents/workspace.js";
 import { resolveSessionFilePath, resolveStorePath } from "../../config/sessions/paths.js";
 import { loadSessionStore, saveSessionStore } from "../../config/sessions/store.js";
 import { createLazyRuntimeMethod, createLazyRuntimeModule } from "../../shared/lazy-runtime.js";
+import { defineCachedValue } from "./runtime-cache.js";
 import type { PluginRuntime } from "./types.js";
 
-function defineCachedValue<T extends object, K extends PropertyKey>(
-  target: T,
-  key: K,
-  create: () => unknown,
-): void {
-  let cached: unknown;
-  let ready = false;
-  Object.defineProperty(target, key, {
-    configurable: true,
-    enumerable: true,
-    get() {
-      if (!ready) {
-        cached = create();
-        ready = true;
-      }
-      return cached;
-    },
-  });
-}
-
 const loadEmbeddedPiRuntime = createLazyRuntimeModule(
   () => import("./runtime-embedded-pi.runtime.js"),
 );