fix(release-gate): isolate PAGE agent runs from split-service MCP routing.

Gate stacks inherited developer MCP env and routed sandbox-fs writes to the
8082 workspace root, so PAGE/DATA scenarios failed with ENOENT despite a
healthy goosed. Sanitize isolated portal env, grant gate skills, and align
CHAT search assertions with the tkmind_search tool name.

Co-authored-by: Cursor <cursoragent@cursor.com>

scripts/run-release-gate-page-scenarios.mjs

@@ -4,6 +4,7 @@ import path from 'node:path';
 
 import {
   createLocalGateStack,
+  grantGateUserSkillsByUsername,
   selectBackendLlmProvider,
   seedSelectedProviderKeys,
 } from '../release-gate/local-stack.mjs';
@@ -16,8 +17,12 @@ const scenarioIds = [
 
 async function runScenario(scenarioId, port) {
   const childTimeoutMs = Math.max(
-    30_000,
-    Number(process.env.RELEASE_GATE_SCENARIO_PROCESS_TIMEOUT_MS ?? 360_000) || 360_000,
+    60_000,
+    Number(process.env.RELEASE_GATE_SCENARIO_PROCESS_TIMEOUT_MS ?? 900_000) || 900_000,
+  );
+  const stepTimeoutMs = Math.max(
+    60_000,
+    Number(process.env.RELEASE_GATE_SCENARIO_TIMEOUT_MS ?? 900_000) || 900_000,
   );
   const code = await new Promise((resolve, reject) => {
     const child = spawn(
@@ -28,9 +33,7 @@ async function runScenario(scenarioId, port) {
         env: {
           ...process.env,
           JOHN_PASSWORD: '888888',
-          RELEASE_GATE_SCENARIO_TIMEOUT_MS: String(
-            Number(process.env.RELEASE_GATE_SCENARIO_TIMEOUT_MS ?? 300_000) || 300_000,
-          ),
+          RELEASE_GATE_SCENARIO_TIMEOUT_MS: String(stepTimeoutMs),
         },
         stdio: 'inherit',
       },
@@ -77,10 +80,18 @@ async function register(username) {
 
 try {
   await register('john2');
-  const results = await Promise.all(scenarioIds.map(async (scenarioId) => ({
-    scenarioId,
-    code: await runScenario(scenarioId, new URL(stack.baseUrl).port),
-  })));
+  await grantGateUserSkillsByUsername({
+    targetUrl: stack.mysqlUrl,
+    username: 'john2',
+    skillNames: ['static-page-publish'],
+  });
+  const results = [];
+  for (const scenarioId of scenarioIds) {
+    results.push({
+      scenarioId,
+      code: await runScenario(scenarioId, new URL(stack.baseUrl).port),
+    });
+  }
   for (const result of results) {
     console.log(`${result.code === 0 ? 'PASS' : 'FAIL'} ${result.scenarioId}`);
   }