fix: repair frontier eval budgets and workflow instructions

Preserve frontier models and quality thresholds while fixing truncated judge output, ordered section expansion, consent checks, QA scoring, and ship audit gates. Add regression coverage and refresh generated docs.

Co-Authored-By: OpenAI Codex <noreply@openai.com>

test/helpers/workflow-excerpt.ts

@@ -0,0 +1,24 @@
+import * as fs from 'fs';
+import * as path from 'path';
+
+const ROOT = path.resolve(import.meta.dir, '..', '..');
+
+// Same generated two-line pointer consumed by setup-gbrain-fixture.ts.
+const STOP_POINTER =
+  /^> \*\*STOP\.\*\* Before [^\n]*sections\/([a-z0-9-]+\.md)[^\n]*\n> in full\.[^\n]*/gm;
+
+/** Expand on-demand sections where the agent reads them, then take the requested excerpt. */
+export function readWorkflowExcerpt(skillPath: string, startMarker: string, endMarker: string | null): string {
+  const secDir = path.join(ROOT, path.dirname(skillPath), 'sections');
+  const content = fs.readFileSync(path.join(ROOT, skillPath), 'utf-8').replace(STOP_POINTER, (_pointer, file: string) => {
+    const body = fs.readFileSync(path.join(secDir, file), 'utf-8')
+      .replace(/^<!--[^\n]*-->\n/gm, '').trim();
+    if (body.length < 200) throw new Error(`${skillPath}: section ${file} is empty/stub`);
+    return body;
+  });
+  const start = content.indexOf(startMarker);
+  if (start < 0) throw new Error(`Start marker not found in ${skillPath}: "${startMarker}"`);
+  const end = endMarker ? content.indexOf(endMarker, start) : content.length;
+  if (end < 0) throw new Error(`End marker not found in ${skillPath}: "${endMarker}"`);
+  return content.slice(start, end);
+}