fix(confidence-engine): correct experiment helper project root

scripts/start-case-experiment-helper.cjs

@@ -16,10 +16,12 @@
 
 // Use the standard environment loader already available to this Next repository.
 // loadEnvConfig mutates process.env in-place (same semantics as previous bespoke parser).
+const path = require("path");
+const PROJECT_ROOT = path.resolve(__dirname, "..");
 (function loadEnvironment() {
   try {
     const { loadEnvConfig } = require("@next/env");
-    loadEnvConfig(__dirname, undefined, { logOutput: "none" }, false);
+    loadEnvConfig(PROJECT_ROOT, undefined, { logOutput: "none" }, false);
   } catch {
     // loader unavailable — proceed with whatever is already set.
   }
@@ -90,7 +92,7 @@ async function runStartCaseExperiment(scenarioInput, experimentInstruction) {
       );
     }
 
-    const { startCase: _sc } = await import("../../lib/graph/orchestrator.js");
+    const { startCase: _sc } = await import(PROJECT_ROOT + "/lib/graph/orchestrator.js");
     startCase = _sc;
   }
 
@@ -135,7 +137,7 @@ async function runStartCaseExperiment(scenarioInput, experimentInstruction) {
   // Used only for deterministic apparatus verification of the import path.
   if (process.env.START_CASE_EXPERIMENT_HELPER_IMPORT_ONLY === "1") {
     try {
-      const mod = await import("../../lib/graph/orchestrator.js");
+      const mod = await import(PROJECT_ROOT + "/lib/graph/orchestrator.js");
       const startCaseResolved = typeof mod.startCase === "function";
       const output = JSON.stringify({
         success: true,