feat(voyage)!: marketplace handoff — rename plugins/ultraplan-local to plugins/voyage [skip-docs]

Session 5 of voyage-rebrand (V6). Operator-authorized cross-plugin scope.

- git mv plugins/ultraplan-local plugins/voyage (rename detected, history preserved)
- .claude-plugin/marketplace.json: voyage entry replaces ultraplan-local
- CLAUDE.md: voyage row in plugin list, voyage in design-system consumer list
- README.md: bulk rename ultra*-local commands -> trek* commands; ultraplan-local refs -> voyage; type discriminators (type: trekbrief/trekreview); session-title pattern (voyage:<command>:<slug>); v4.0.0 release-note paragraph
- plugins/voyage/.claude-plugin/plugin.json: homepage/repository URLs point to monorepo voyage path
- plugins/voyage/verify.sh: drop URL whitelist exception (no longer needed)

Closes voyage-rebrand. bash plugins/voyage/verify.sh PASS 7/7. npm test 361/361.

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

@@ -1,60 +0,0 @@
-import { test } from 'node:test';
-import { strict as assert } from 'node:assert';
-import { validateResearchContent } from '../../lib/validators/research-validator.mjs';
-
-const GOOD = `---
-type: trekresearch-brief
-created: 2026-04-30
-question: "How to do X?"
-confidence: 0.8
-dimensions: 3
----
-
-## Executive Summary
-
-3 sentences.
-
-## Dimensions
-
-### Dim A — Confidence: high
-`;
-
-test('validateResearch — happy path', () => {
-  const r = validateResearchContent(GOOD);
-  assert.equal(r.valid, true, JSON.stringify(r.errors));
-});
-
-test('validateResearch — wrong type', () => {
-  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'));
-});
-
-test('validateResearch — confidence out of range', () => {
-  const t = GOOD.replace('confidence: 0.8', 'confidence: 1.5');
-  const r = validateResearchContent(t);
-  assert.equal(r.valid, false);
-  assert.ok(r.errors.find(e => e.code === 'RESEARCH_BAD_CONFIDENCE'));
-});
-
-test('validateResearch — missing confidence is warning, not error', () => {
-  const t = GOOD.replace(/^confidence: 0\.8\n/m, '');
-  const r = validateResearchContent(t);
-  assert.equal(r.valid, true);
-  assert.ok(r.warnings.find(w => w.code === 'RESEARCH_NO_CONFIDENCE'));
-});
-
-test('validateResearch — strict missing body section is error', () => {
-  const t = GOOD.replace(/## Dimensions\n\n### Dim A — Confidence: high\n/, '');
-  const r = validateResearchContent(t, { strict: true });
-  assert.equal(r.valid, false);
-  assert.ok(r.errors.find(e => e.code === 'RESEARCH_MISSING_SECTION'));
-});
-
-test('validateResearch — bad dimensions value', () => {
-  const t = GOOD.replace('dimensions: 3', 'dimensions: 0');
-  const r = validateResearchContent(t);
-  assert.equal(r.valid, false);
-  assert.ok(r.errors.find(e => e.code === 'RESEARCH_BAD_DIMENSIONS'));
-});