diff --git a/package.json b/package.json
index ef5193a..0d5670a 100644
--- a/package.json
+++ b/package.json
@@ -114,7 +114,9 @@
     "test:wp7-03:red": "node scripts/run-wp7-03-validation.mjs --phase red",
     "test:wp7-04": "node scripts/run-wp7-04-validation.mjs",
     "test:wp7-05": "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"
+    "test:wp7-05:unit": "node --test tests/package/wp7-05-ui-gate.test.mjs tests/package/wp7-05-coverage.test.mjs",
+    "test:wp7-06": "node scripts/run-wp7-06-validation.mjs",
+    "test:wp7-06:unit": "node --test tests/package/wp7-06-prefreeze.test.mjs"
   },
   "devDependencies": {
     "@playwright/test": "1.62.0",
diff --git a/scripts/lib/wp7-06-prefreeze.mjs b/scripts/lib/wp7-06-prefreeze.mjs
new file mode 100644
index 0000000..db8d3bb
--- /dev/null
+++ b/scripts/lib/wp7-06-prefreeze.mjs
@@ -0,0 +1,62 @@
+const EXPECTED_TRACE_SUMMARY = Object.freeze({
+  acceptanceCriteria: 52,
+  errorCategories: 9,
+  featureModules: 13,
+  parentFamilies: 89,
+  penProductFrames: 18,
+  productContracts: 19,
+  requirements: 109,
+  tasks: 52,
+  testCases: 117,
+  uiPages: 22,
+});
+
+const REQUIRED_UPSTREAM = Object.freeze({
+  "TASK-WP7-01": "passed",
+  "TASK-WP7-02": "passed",
+  "TASK-WP7-03": "deferred_nonblocking_first_version",
+  "TASK-WP7-04": "deferred_nonblocking_first_version",
+  "TASK-WP7-05": "passed",
+});
+
+const shaPattern = /^[0-9a-f]{40}$/i;
+
+export function buildWp706PrefreezeReport({ currentCommit, releaseExists, trace, upstream }) {
+  if (releaseExists) throw new Error("WP7_06_RELEASE_WRITTEN_PREMATURELY");
+  if (!shaPattern.test(currentCommit ?? "")) throw new Error("WP7_06_CURRENT_COMMIT_INVALID");
+  if (trace?.status !== "passed" || !Array.isArray(trace?.errors) || trace.errors.length > 0) {
+    throw new Error("WP7_06_TRACE_VALIDATION_FAILED");
+  }
+  for (const [key, expected] of Object.entries(EXPECTED_TRACE_SUMMARY)) {
+    if (trace.summary?.[key] !== expected) throw new Error(`WP7_06_TRACE_COUNT_MISMATCH:${key}`);
+  }
+
+  for (const [taskId, expectedStatus] of Object.entries(REQUIRED_UPSTREAM)) {
+    const item = upstream?.[taskId];
+    if (!item || !shaPattern.test(item.head ?? "")) throw new Error(`WP7_06_UPSTREAM_HEAD_INVALID:${taskId}`);
+    if (item.merged !== true) throw new Error(`WP7_06_UPSTREAM_NOT_MERGED:${taskId}`);
+    if (item.status !== expectedStatus) throw new Error(`WP7_06_UNSUPPORTED_STATUS:${taskId}`);
+  }
+
+  return {
+    schema_version: "1.0",
+    task_id: "TASK-WP7-06",
+    status: "passed",
+    current_commit: currentCommit.toLowerCase(),
+    release_json_written: false,
+    trace_summary: { ...EXPECTED_TRACE_SUMMARY },
+    upstream: Object.fromEntries(Object.entries(REQUIRED_UPSTREAM).map(([taskId]) => [taskId, {
+      branch: upstream[taskId].branch,
+      head: upstream[taskId].head.toLowerCase(),
+      merged: true,
+      status: upstream[taskId].status,
+    }])),
+    deferred_external_tasks: Object.entries(REQUIRED_UPSTREAM)
+      .filter(([, status]) => status === "deferred_nonblocking_first_version")
+      .map(([taskId]) => taskId),
+    final_release_allowed: false,
+    next_task: "TASK-WP7-07",
+  };
+}
+
+export { EXPECTED_TRACE_SUMMARY, REQUIRED_UPSTREAM };
diff --git a/scripts/run-wp7-06-validation.mjs b/scripts/run-wp7-06-validation.mjs
new file mode 100644
index 0000000..0023841
--- /dev/null
+++ b/scripts/run-wp7-06-validation.mjs
@@ -0,0 +1,108 @@
+import { spawnSync } from "node:child_process";
+import { createHash } from "node:crypto";
+import { existsSync, mkdirSync, readFileSync, writeFileSync } from "node:fs";
+import { resolve } from "node:path";
+
+import { validateTddTrace } from "./lib/tdd-trace.mjs";
+import { buildWp706PrefreezeReport, REQUIRED_UPSTREAM } from "./lib/wp7-06-prefreeze.mjs";
+
+const runId = process.env.DADA_TDD_RUN_ID ?? `wp7-06-prefreeze-${new Date().toISOString().replace(/[^0-9]/g, "")}`;
+const runDirectory = resolve("artifacts", "tdd", runId);
+const caseDirectory = resolve(runDirectory, "cases", "TDD-WP7-AC-001-trace-structure");
+if (existsSync(runDirectory)) throw new Error(`Evidence run already exists: ${runId}`);
+mkdirSync(caseDirectory, { recursive: true });
+
+function writeJson(path, value) {
+  writeFileSync(path, `${JSON.stringify(value, null, 2)}\n`);
+}
+
+function git(args) {
+  const result = spawnSync("git", args, { encoding: "utf8", timeout: 60_000 });
+  if ((result.status ?? 1) !== 0) throw new Error(`WP7_06_GIT_COMMAND_FAILED:${args[0]}`);
+  return result.stdout.trim();
+}
+
+function runCommand(name, command) {
+  const startedAt = new Date().toISOString();
+  const result = spawnSync(process.env.ComSpec ?? "cmd.exe", ["/d", "/s", "/c", command], {
+    encoding: "utf8",
+    env: process.env,
+    maxBuffer: 64 * 1024 * 1024,
+  });
+  if (result.stdout) process.stdout.write(result.stdout);
+  if (result.stderr) process.stderr.write(result.stderr);
+  return {
+    command,
+    exit_code: result.status ?? 1,
+    finished_at: new Date().toISOString(),
+    name,
+    started_at: startedAt,
+  };
+}
+
+const commands = [
+  runCommand("prefreeze-unit", "node --test tests/package/wp7-06-prefreeze.test.mjs"),
+  runCommand("tdd-trace", "pnpm validate:tdd-trace"),
+];
+if (commands.some((command) => command.exit_code !== 0)) {
+  writeJson(resolve(caseDirectory, "commands.json"), { commands, run_id: runId, schema_version: "1.0" });
+  process.exit(1);
+}
+
+const trace = validateTddTrace();
+const currentCommit = git(["rev-parse", "HEAD"]);
+const remoteLines = git(["ls-remote", "--heads", "origin", "codex/wp7-01", "codex/wp7-02", "codex/wp7-03", "codex/wp7-04", "codex/wp7-05"])
+  .split(/\r?\n/)
+  .filter(Boolean);
+const remoteHeads = Object.fromEntries(remoteLines.map((line) => {
+  const [head, reference] = line.split(/\s+/);
+  return [reference.replace("refs/heads/", ""), head];
+}));
+const upstream = Object.fromEntries(Object.entries(REQUIRED_UPSTREAM).map(([taskId, status]) => {
+  const branch = taskId.replace("TASK-", "codex/").toLowerCase();
+  const head = remoteHeads[branch];
+  const ancestry = spawnSync("git", ["merge-base", "--is-ancestor", head ?? "missing", "HEAD"], { encoding: "utf8", timeout: 30_000 });
+  return [taskId, { branch, head, merged: ancestry.status === 0, status }];
+}));
+const report = buildWp706PrefreezeReport({
+  currentCommit,
+  releaseExists: existsSync(resolve("RELEASE.json")),
+  trace,
+  upstream,
+});
+
+const result = {
+  acceptance_criteria: Array.from({ length: 56 }, (_, index) => index + 1)
+    .filter((number) => ![8, 26, 37, 54].includes(number))
+    .map((number) => `AC-${String(number).padStart(2, "0")}`),
+  automation: ["automated", "manual_review"],
+  commit: currentCommit,
+  evidence_refs: ["commands.json", "trace-summary.json", "upstream-lineage.json", "deferred-external.json"],
+  finished_at: new Date().toISOString(),
+  manifest: {
+    path: "tasks.manifest.json",
+    sha256: createHash("sha256").update(readFileSync("tasks.manifest.json")).digest("hex").toUpperCase(),
+  },
+  missing_evidence: [],
+  release_gate: ["release:P0-A"],
+  requirements: ["NFR-05"],
+  run_id: runId,
+  schema_version: "1.0",
+  status: report.status,
+  task_id: "TASK-WP7-06",
+  test_id: "TDD-WP7-AC-001-trace-structure",
+  work_package: "WP-7",
+};
+
+writeJson(resolve(caseDirectory, "commands.json"), { commands, run_id: runId, schema_version: "1.0" });
+writeJson(resolve(caseDirectory, "trace-summary.json"), { status: trace.status, summary: trace.summary, schema_version: "1.0" });
+writeJson(resolve(caseDirectory, "upstream-lineage.json"), { current_commit: currentCommit, tasks: report.upstream, schema_version: "1.0" });
+writeJson(resolve(caseDirectory, "deferred-external.json"), {
+  policy: "product_owner_first_version_nonblocking",
+  tasks: report.deferred_external_tasks,
+  treated_as_real_provider_pass: false,
+  schema_version: "1.0",
+});
+writeJson(resolve(caseDirectory, "result.json"), result);
+writeJson(resolve(runDirectory, "evidence.json"), { cases: [{ missing_evidence: [], status: result.status, test_id: result.test_id }], run_id: runId, status: result.status, schema_version: "1.0" });
+console.log(JSON.stringify({ deferred_external_tasks: report.deferred_external_tasks, next_task: report.next_task, run_id: runId, status: report.status }, null, 2));
diff --git a/tests/package/wp7-06-prefreeze.test.mjs b/tests/package/wp7-06-prefreeze.test.mjs
new file mode 100644
index 0000000..5955c5a
--- /dev/null
+++ b/tests/package/wp7-06-prefreeze.test.mjs
@@ -0,0 +1,75 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+
+import { buildWp706PrefreezeReport } from "../../scripts/lib/wp7-06-prefreeze.mjs";
+
+const expectedTrace = {
+  errors: [],
+  status: "passed",
+  summary: {
+    acceptanceCriteria: 52,
+    errorCategories: 9,
+    featureModules: 13,
+    parentFamilies: 89,
+    penProductFrames: 18,
+    productContracts: 19,
+    requirements: 109,
+    tasks: 52,
+    testCases: 117,
+    uiPages: 22,
+  },
+};
+
+const upstream = {
+  "TASK-WP7-01": { branch: "codex/wp7-01", head: "1".repeat(40), merged: true, status: "passed" },
+  "TASK-WP7-02": { branch: "codex/wp7-02", head: "2".repeat(40), merged: true, status: "passed" },
+  "TASK-WP7-03": { branch: "codex/wp7-03", head: "3".repeat(40), merged: true, status: "deferred_nonblocking_first_version" },
+  "TASK-WP7-04": { branch: "codex/wp7-04", head: "4".repeat(40), merged: true, status: "deferred_nonblocking_first_version" },
+  "TASK-WP7-05": { branch: "codex/wp7-05", head: "5".repeat(40), merged: true, status: "passed" },
+};
+
+test("builds the exact WP7-06 pre-freeze closure without pretending deferred suppliers passed", () => {
+  const report = buildWp706PrefreezeReport({
+    currentCommit: "a".repeat(40),
+    releaseExists: false,
+    trace: expectedTrace,
+    upstream,
+  });
+
+  assert.equal(report.status, "passed");
+  assert.equal(report.release_json_written, false);
+  assert.deepEqual(report.trace_summary, expectedTrace.summary);
+  assert.deepEqual(report.deferred_external_tasks, ["TASK-WP7-03", "TASK-WP7-04"]);
+});
+
+test("rejects missing lineage and premature RELEASE.json", () => {
+  assert.throws(() => buildWp706PrefreezeReport({
+    currentCommit: "a".repeat(40),
+    releaseExists: false,
+    trace: expectedTrace,
+    upstream: { ...upstream, "TASK-WP7-05": { ...upstream["TASK-WP7-05"], merged: false } },
+  }), /WP7_06_UPSTREAM_NOT_MERGED:TASK-WP7-05/);
+
+  assert.throws(() => buildWp706PrefreezeReport({
+    currentCommit: "a".repeat(40),
+    releaseExists: true,
+    trace: expectedTrace,
+    upstream,
+  }), /WP7_06_RELEASE_WRITTEN_PREMATURELY/);
+});
+
+test("rejects trace drift and unsupported upstream statuses", () => {
+  assert.throws(() => buildWp706PrefreezeReport({
+    currentCommit: "a".repeat(40),
+    releaseExists: false,
+    trace: { ...expectedTrace, summary: { ...expectedTrace.summary, testCases: 116 } },
+    upstream,
+  }), /WP7_06_TRACE_COUNT_MISMATCH:testCases/);
+
+  assert.throws(() => buildWp706PrefreezeReport({
+    currentCommit: "a".repeat(40),
+    releaseExists: false,
+    trace: expectedTrace,
+    upstream: { ...upstream, "TASK-WP7-03": { ...upstream["TASK-WP7-03"], status: "passed" } },
+  }), /WP7_06_UNSUPPORTED_STATUS:TASK-WP7-03/);
+});