diff --git a/package.json b/package.json
index 50ac0b6..ef5193a 100644
--- a/package.json
+++ b/package.json
@@ -112,7 +112,9 @@
     "review:wp7-02": "node scripts/record-wp7-02-manual-review.mjs",
     "test:wp7-03": "node scripts/run-wp7-03-validation.mjs --phase green",
     "test:wp7-03:red": "node scripts/run-wp7-03-validation.mjs --phase red",
-    "test:wp7-04": "node scripts/run-wp7-04-validation.mjs"
+    "test:wp7-04": "node scripts/run-wp7-04-validation.mjs",
+    "test:wp7-05": "node scripts/run-wp7-05-validation.mjs",
+    "test:wp7-05:unit": "node --test tests/package/wp7-05-ui-gate.test.mjs tests/package/wp7-05-coverage.test.mjs"
   },
   "devDependencies": {
     "@playwright/test": "1.62.0",
diff --git a/scripts/lib/wp7-05-coverage.mjs b/scripts/lib/wp7-05-coverage.mjs
new file mode 100644
index 0000000..a721bbe
--- /dev/null
+++ b/scripts/lib/wp7-05-coverage.mjs
@@ -0,0 +1,45 @@
+import path from 'node:path';
+import { REQUIRED_COVERAGE_UNITS } from './wp7-05-ui-gate.mjs';
+
+const ABSOLUTE_PATH = /^(?:[A-Za-z]:[\\/]|[\\/]{2}|\\\\)/;
+
+function assertSafeRelative(value, field) {
+  if (typeof value !== 'string' || !value || ABSOLUTE_PATH.test(value) || path.isAbsolute(value)) {
+    throw new Error(`WP7_05_UNSAFE_${field}`);
+  }
+  const normalized = value.replaceAll('\\', '/');
+  if (normalized.split('/').includes('..')) throw new Error(`WP7_05_UNSAFE_${field}`);
+  return normalized;
+}
+
+export function buildCoverageEvidence({ runId, candidateSha256, coverageUnits, viewports }) {
+  if (!runId || !/^[A-Za-z0-9._-]+$/.test(runId)) throw new Error('WP7_05_INVALID_RUN_ID');
+  if (!/^[A-Fa-f0-9]{64}$/.test(candidateSha256 ?? '')) throw new Error('WP7_05_INVALID_CANDIDATE_HASH');
+  if (!Array.isArray(coverageUnits)) throw new Error('WP7_05_COVERAGE_UNITS_REQUIRED');
+
+  const byPage = new Map();
+  for (const unit of coverageUnits) {
+    if (!REQUIRED_COVERAGE_UNITS.includes(unit.page_id)) throw new Error('WP7_05_UNKNOWN_PAGE');
+    if (byPage.has(unit.page_id)) throw new Error('WP7_05_DUPLICATE_PAGE');
+    if (!Array.isArray(unit.states) || unit.states.length === 0) throw new Error('WP7_05_STATES_REQUIRED');
+    const states = unit.states.map((state) => ({
+      state: assertSafeRelative(state.state, 'STATE'),
+      screenshot_100pct: assertSafeRelative(state.screenshot_100pct, 'SCREENSHOT'),
+      screenshot_200pct: assertSafeRelative(state.screenshot_200pct, 'SCREENSHOT'),
+      trace: assertSafeRelative(state.trace, 'TRACE'),
+    }));
+    byPage.set(unit.page_id, { page_id: unit.page_id, states });
+  }
+  const missing = REQUIRED_COVERAGE_UNITS.filter((page) => !byPage.has(page));
+  if (missing.length) throw new Error(`WP7_05_MISSING_PAGES:${missing.join(',')}`);
+  if (!Array.isArray(viewports) || viewports.length !== 2) throw new Error('WP7_05_VIEWPORTS_REQUIRED');
+
+  return {
+    schema_version: '1.0',
+    task: 'TASK-WP7-05',
+    run_id: runId,
+    candidate_sha256: candidateSha256.toUpperCase(),
+    viewports,
+    coverage_units: REQUIRED_COVERAGE_UNITS.map((page) => byPage.get(page)),
+  };
+}
diff --git a/scripts/lib/wp7-05-ui-gate.mjs b/scripts/lib/wp7-05-ui-gate.mjs
new file mode 100644
index 0000000..3900f9f
--- /dev/null
+++ b/scripts/lib/wp7-05-ui-gate.mjs
@@ -0,0 +1,71 @@
+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 brands = new Set(record.browsers.map((browser) => browser.brand));
+    if (brands.size !== 2 || !brands.has('Google Chrome') || !brands.has('Microsoft Edge')) {
+      return blocked('candidate_browser_pair_invalid');
+    }
+    if (record.windows?.build == null || !record.candidate_package?.sha256 || !record.candidate_package?.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 missingStates = evidence.coverage_units
+    .filter((unit) => REQUIRED_COVERAGE_UNITS.includes(unit.page_id))
+    .filter((unit) => !Array.isArray(unit.states) || unit.states.length === 0)
+    .map((unit) => unit.page_id);
+  if (missingStates.length) return blocked('coverage_states_incomplete', { missingStates });
+  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-coverage.test.mjs b/tests/package/wp7-05-coverage.test.mjs
new file mode 100644
index 0000000..2f58a01
--- /dev/null
+++ b/tests/package/wp7-05-coverage.test.mjs
@@ -0,0 +1,41 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { buildCoverageEvidence } from '../../scripts/lib/wp7-05-coverage.mjs';
+import { REQUIRED_COVERAGE_UNITS } from '../../scripts/lib/wp7-05-ui-gate.mjs';
+
+const viewports = [
+  { width: 1920, height: 1080, deviceScaleFactor: 1, zoom: 100 },
+  { width: 1920, height: 1080, deviceScaleFactor: 1, zoom: 200 },
+];
+
+function completeUnits() {
+  return REQUIRED_COVERAGE_UNITS.map((page_id) => ({
+    page_id,
+    states: [{
+      state: 'normal',
+      screenshot_100pct: `ui/${page_id}/normal/100pct.png`,
+      screenshot_200pct: `ui/${page_id}/normal/200pct.png`,
+      trace: `ui/${page_id}/normal/trace.zip`,
+    }],
+  }));
+}
+
+test('builds ordered, sanitized evidence for all 22 coverage units', () => {
+  const evidence = buildCoverageEvidence({
+    runId: 'wp7-05-red-001',
+    candidateSha256: 'a'.repeat(64),
+    coverageUnits: completeUnits(),
+    viewports,
+  });
+  assert.equal(evidence.coverage_units.length, 22);
+  assert.equal(evidence.coverage_units[0].page_id, 'support-gate');
+  assert.equal(evidence.candidate_sha256, 'A'.repeat(64));
+});
+
+test('rejects absolute evidence paths and incomplete page state', () => {
+  const units = completeUnits();
+  units[0].states[0].trace = 'C:\\secret\\trace.zip';
+  assert.throws(() => buildCoverageEvidence({
+    runId: 'wp7-05-red-001', candidateSha256: 'a'.repeat(64), coverageUnits: units, viewports,
+  }), /WP7_05_UNSAFE_TRACE/);
+});
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..6bf7731
--- /dev/null
+++ b/tests/package/wp7-05-ui-gate.test.mjs
@@ -0,0 +1,47 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import fs from 'node:fs';
+import os from 'node:os';
+import path from 'node:path';
+import { loadCandidateRecord, validateCoverageEvidence, runWp705Gate, REQUIRED_COVERAGE_UNITS } from '../../scripts/lib/wp7-05-ui-gate.mjs';
+
+test('WP7-05 accepts the WP7-01 candidate record schema', () => {
+  const directory = fs.mkdtempSync(path.join(os.tmpdir(), 'wp7-05-'));
+  const file = path.join(directory, 'release-candidate.json');
+  fs.writeFileSync(file, JSON.stringify({
+    browsers: [
+      { brand: 'Google Chrome', full_version: '150.0.0', major: 150 },
+      { brand: 'Microsoft Edge', full_version: '151.0.0', major: 151 },
+    ],
+    windows: { build: '26200.8875' },
+    candidate_package: { fixed_port: 43121, sha256: 'A'.repeat(64) },
+  }));
+  assert.equal(loadCandidateRecord(file).status, 'ready');
+  fs.rmSync(directory, { recursive: true, force: true });
+});
+
+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 requires state evidence for every listed coverage unit', () => {
+  const result = validateCoverageEvidence({
+    coverage_units: REQUIRED_COVERAGE_UNITS.map((page_id) => ({ page_id, states: [] })),
+    viewports: [],
+  });
+  assert.equal(result.code, 'coverage_states_incomplete');
+  assert.equal(result.missingStates.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');
+});