diff --git a/package.json b/package.json
index 95cc0b0..094102e 100644
--- a/package.json
+++ b/package.json
@@ -92,7 +92,9 @@
     "test:wp5-02:red": "node scripts/run-wp5-02-validation.mjs --phase red",
     "preview:wp5-02": "node scripts/run-wp5-02-manual-preview.mjs",
     "test:wp5-03": "node scripts/run-wp5-03-validation.mjs",
-    "test:wp5-03:red": "node scripts/run-wp5-03-validation.mjs --phase red"
+    "test:wp5-03:red": "node scripts/run-wp5-03-validation.mjs --phase red",
+    "test:wp7-05": "node scripts/run-wp7-05-validation.mjs",
+    "test:wp7-05:unit": "node --test tests/package/wp7-05-ui-gate.test.mjs"
   },
   "devDependencies": {
     "@playwright/test": "1.62.0",
diff --git a/scripts/lib/wp7-05-ui-gate.mjs b/scripts/lib/wp7-05-ui-gate.mjs
new file mode 100644
index 0000000..52c2ad3
--- /dev/null
+++ b/scripts/lib/wp7-05-ui-gate.mjs
@@ -0,0 +1,66 @@
+import fs from 'node:fs';
+
+export const REQUIRED_COVERAGE_UNITS = Object.freeze([
+  'support-gate', 'user-auth', 'workspace', 'current-task', 'projects',
+  'project-detail', 'editor', 'export', 'credits', 'settings',
+  'preview-user-variant', 'admin-auth', 'admin-overview', 'admin-users',
+  'admin-invites', 'admin-models', 'admin-assets', 'admin-preview',
+  'admin-generations', 'admin-services-storage', 'admin-audit', 'system-ui',
+]);
+
+const REQUIRED_VIEWPORTS = Object.freeze([
+  { width: 1920, height: 1080, deviceScaleFactor: 1, zoom: 100 },
+  { width: 1920, height: 1080, deviceScaleFactor: 1, zoom: 200 },
+]);
+
+function blocked(code, details = {}) {
+  return { status: 'externally_blocked', code, ...details };
+}
+
+export function loadCandidateRecord(path) {
+  if (!path || !fs.existsSync(path)) return blocked('candidate_record_missing');
+  try {
+    const record = JSON.parse(fs.readFileSync(path, 'utf8'));
+    if (!Array.isArray(record.browsers) || record.browsers.length !== 2) {
+      return blocked('candidate_browser_record_incomplete');
+    }
+    const names = new Set(record.browsers.map((browser) => browser.name));
+    if (names.size !== 2 || !names.has('Chrome') || !names.has('Edge')) {
+      return blocked('candidate_browser_pair_invalid');
+    }
+    if (record.windows?.build == null || !record.artifact?.sha256 || !record.fixed_port) {
+      return blocked('candidate_identity_incomplete');
+    }
+    if (record.browsers.some((browser) => !browser.full_version || !browser.major)) {
+      return blocked('candidate_full_version_missing');
+    }
+    return { status: 'ready', record };
+  } catch {
+    return blocked('candidate_record_invalid');
+  }
+}
+
+export function validateCoverageEvidence(evidence) {
+  if (!evidence || !Array.isArray(evidence.coverage_units)) {
+    return blocked('coverage_evidence_missing');
+  }
+  const actual = new Set(evidence.coverage_units.map((unit) => unit.page_id));
+  const missing = REQUIRED_COVERAGE_UNITS.filter((unit) => !actual.has(unit));
+  if (missing.length) return blocked('coverage_units_incomplete', { missing });
+  const viewportKeys = new Set((evidence.viewports ?? []).map((viewport) => JSON.stringify(viewport)));
+  const missingViewports = REQUIRED_VIEWPORTS.filter((viewport) => !viewportKeys.has(JSON.stringify(viewport)));
+  if (missingViewports.length) return blocked('candidate_viewports_incomplete', { missingViewports });
+  return { status: 'ready' };
+}
+
+export function runWp705Gate({ candidatePath, evidence, dependencies = {} }) {
+  const candidate = loadCandidateRecord(candidatePath);
+  if (candidate.status !== 'ready') return candidate;
+  const coverage = validateCoverageEvidence(evidence);
+  if (coverage.status !== 'ready') return coverage;
+  const externalBlockers = Object.entries(dependencies)
+    .filter(([, status]) => status === 'externally_blocked')
+    .map(([task]) => task);
+  if (externalBlockers.length) return blocked('upstream_external_blocked', { externalBlockers });
+  return { status: 'ready_for_execution' };
+}
diff --git a/scripts/run-wp7-05-validation.mjs b/scripts/run-wp7-05-validation.mjs
new file mode 100644
index 0000000..691cf95
--- /dev/null
+++ b/scripts/run-wp7-05-validation.mjs
@@ -0,0 +1,13 @@
+import { runWp705Gate } from './lib/wp7-05-ui-gate.mjs';
+
+const result = runWp705Gate({
+  candidatePath: process.env.WP7_01_CANDIDATE_RECORD,
+  evidence: null,
+  dependencies: {
+    'TASK-WP7-03': 'externally_blocked',
+    'TASK-WP7-04': 'externally_blocked',
+  },
+});
+
+console.log(JSON.stringify({ task: 'TASK-WP7-05', ...result }));
+process.exitCode = result.status === 'ready_for_execution' ? 0 : 3;
diff --git a/tests/package/wp7-05-ui-gate.test.mjs b/tests/package/wp7-05-ui-gate.test.mjs
new file mode 100644
index 0000000..4c3f753
--- /dev/null
+++ b/tests/package/wp7-05-ui-gate.test.mjs
@@ -0,0 +1,20 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { validateCoverageEvidence, runWp705Gate, REQUIRED_COVERAGE_UNITS } from '../../scripts/lib/wp7-05-ui-gate.mjs';
+
+test('WP7-05 requires all 22 coverage units and both exact candidate viewports', () => {
+  const result = validateCoverageEvidence({ coverage_units: [], viewports: [] });
+  assert.equal(result.status, 'externally_blocked');
+  assert.equal(result.code, 'coverage_units_incomplete');
+  assert.equal(result.missing.length, REQUIRED_COVERAGE_UNITS.length);
+});
+
+test('WP7-05 preserves upstream external blockers instead of declaring Green', () => {
+  const result = runWp705Gate({
+    candidatePath: 'missing-release-candidate.json',
+    evidence: null,
+    dependencies: { 'TASK-WP7-03': 'externally_blocked' },
+  });
+  assert.equal(result.status, 'externally_blocked');
+  assert.equal(result.code, 'candidate_record_missing');
+});