feat(voyage)!: rename type discriminators across validators + fixtures [skip-docs]

- brief-validator: BRIEF_TYPE_VALUES ['ultrabrief','ultrareview'] -> ['trekbrief','trekreview'] + dependent branches
- research-validator: 'ultraresearch-brief' -> 'trekresearch-brief'
- review-validator: 'ultrareview' -> 'trekreview'
- 3 templates frontmatter type:
- 4 synthetic fixtures: ultraplan-synthetic/ultrareview-synthetic -> trek* (frontmatter only; bodies untouched, Jaccard floor preserved)
- 2 trekreview fixtures: type: trekreview
- 6 validator-test fixtures + asserts
- agents/review-coordinator.md frontmatter example

Atomic: validator + fixtures committed together — partial state would cause vacuous
test passes or hard validator rejection.

Part of voyage-rebrand session 2 (W3.3 / Step 5).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

plugins/ultraplan-local/tests/validators/brief-validator.test.mjs

@@ -3,7 +3,7 @@ import { strict as assert } from 'node:assert';
 import { validateBriefContent } from '../../lib/validators/brief-validator.mjs';
 
 const GOOD_BRIEF = `---
-type: ultrabrief
+type: trekbrief
 brief_version: "2.0"
 created: 2026-04-30
 task: "Add JWT auth to API"
@@ -37,7 +37,7 @@ test('validateBrief — happy path', () => {
 });
 
 test('validateBrief — wrong type rejected', () => {
-  const t = GOOD_BRIEF.replace('type: ultrabrief', 'type: notabrief');
+  const t = GOOD_BRIEF.replace('type: trekbrief', 'type: notabrief');
   const r = validateBriefContent(t);
   assert.equal(r.valid, false);
   assert.ok(r.errors.find(e => e.code === 'BRIEF_WRONG_TYPE'));
@@ -94,7 +94,7 @@ test('validateBrief — missing frontmatter is hard error', () => {
 });
 
 const REVIEW_AS_BRIEF = `---
-type: ultrareview
+type: trekreview
 task: "Review delivered ultrareview-local v1.0"
 slug: ultrareview-local
 project_dir: .claude/projects/2026-05-01-ultrareview-local/
@@ -144,11 +144,11 @@ test('validateBrief — ultrareview with findings as scalar (not array) rejected
 });
 
 test('validateBrief — wrong-type error message includes accepted set', () => {
-  const t = REVIEW_AS_BRIEF.replace('type: ultrareview', 'type: somethingelse');
+  const t = REVIEW_AS_BRIEF.replace('type: trekreview', 'type: somethingelse');
   const r = validateBriefContent(t);
   assert.equal(r.valid, false);
   const wrongType = r.errors.find(e => e.code === 'BRIEF_WRONG_TYPE');
   assert.ok(wrongType);
-  assert.ok(/ultrabrief/.test(wrongType.message));
-  assert.ok(/ultrareview/.test(wrongType.message));
+  assert.ok(/trekbrief/.test(wrongType.message));
+  assert.ok(/trekreview/.test(wrongType.message));
 });

plugins/ultraplan-local/tests/validators/research-validator.test.mjs

@@ -3,7 +3,7 @@ import { strict as assert } from 'node:assert';
 import { validateResearchContent } from '../../lib/validators/research-validator.mjs';
 
 const GOOD = `---
-type: ultraresearch-brief
+type: trekresearch-brief
 created: 2026-04-30
 question: "How to do X?"
 confidence: 0.8
@@ -25,7 +25,7 @@ test('validateResearch — happy path', () => {
 });
 
 test('validateResearch — wrong type', () => {
-  const t = GOOD.replace('type: ultraresearch-brief', 'type: random');
+  const t = GOOD.replace('type: trekresearch-brief', 'type: random');
   const r = validateResearchContent(t);
   assert.equal(r.valid, false);
   assert.ok(r.errors.find(e => e.code === 'RESEARCH_WRONG_TYPE'));

plugins/ultraplan-local/tests/validators/review-validator.test.mjs

@@ -3,7 +3,7 @@ import { strict as assert } from 'node:assert';
 import { validateReviewContent } from '../../lib/validators/review-validator.mjs';
 
 const GOOD_REVIEW = `---
-type: ultrareview
+type: trekreview
 review_version: "1.0"
 created: 2026-05-01
 task: "Add JWT auth"
@@ -41,7 +41,7 @@ test('validateReview — happy path', () => {
 });
 
 test('validateReview — wrong type rejected (REVIEW_WRONG_TYPE)', () => {
-  const t = GOOD_REVIEW.replace('type: ultrareview', 'type: ultrabrief');
+  const t = GOOD_REVIEW.replace('type: trekreview', 'type: trekbrief');
   const r = validateReviewContent(t);
   assert.equal(r.valid, false);
   assert.ok(r.errors.find(e => e.code === 'REVIEW_WRONG_TYPE'));