fix(compliance): port DSR/consent/audit/retention audit fixes

Ports the upstream compliance-core audit fixes onto the kept core-dsr,
core-consent, core-audit, core-cms and core-shared packages:

- core-dsr: scope DSR operations to the caller's own subject (A11);
  include the subject's audit trail in exports; resolve the per-request
  binding from ctx instead of a throwing singleton proxy.
- core-consent: build the consent router from the shared superjson
  transformer (A10); merge per-category on persist instead of replacing;
  validate migrated categories against an allow-list.
- core-audit: keyed 128-bit pseudonyms + salted DSR certificate; add the
  audit-logs collection and the req-scoped GDPR audit-erasure afterDelete
  hook (A6).
- core-shared: grace-purge soft-deleted rows via a retention-purge task +
  tombstone field and boot registration (A2/A3); add the
  require-authenticated tRPC helper; derive clientIp + resolve the session
  user in createTrpcContext (B2/A11).
- core-cms: register audit-logs, wire the audit-erasure hook and
  retention-purge tasks; adapted to the clean-slate collection set
  (users only — no workspaces feature on this branch).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016j8z4VHjedXDTjEDNg7qHK

packages/core-cms/package.json

@@ -17,6 +17,8 @@
     "@payloadcms/db-postgres": "^3.14.0",
     "@payloadcms/richtext-lexical": "^3.14.0",
     "@repo/auth": "workspace:*",
+    "@repo/core-audit": "workspace:*",
+    "@repo/core-shared": "workspace:*",
     "payload": "^3.14.0"
   },
   "devDependencies": {

packages/core-cms/src/payload.config.test.ts

@@ -8,6 +8,39 @@ describe("payloadConfig composition", () => {
     expect(slugs).toEqual(expect.arrayContaining(["users"]));
   });
 
+  it("adds the deletedAt tombstone to postDeletion collections (A2)", async () => {
+    const resolved = await config;
+    for (const slug of ["users"]) {
+      const collection = resolved.collections?.find((c) => c.slug === slug);
+      const names =
+        collection?.fields.map((f) => (f as { name?: string }).name) ?? [];
+      expect(names, `collection ${slug}`).toContain("deletedAt");
+    }
+  });
+
+  it("registers a retention purge task per purgeSchedule collection (A3)", async () => {
+    const resolved = await config;
+    const taskSlugs =
+      (
+        resolved.jobs as { tasks?: Array<{ slug: string }> } | undefined
+      )?.tasks?.map((t) => t.slug) ?? [];
+    expect(taskSlugs).toEqual(
+      expect.arrayContaining(["retention-purge--users"]),
+    );
+  });
+
+  it("registers the audit-logs collection (A6)", async () => {
+    const resolved = await config;
+    const slugs = resolved.collections?.map((c) => c.slug) ?? [];
+    expect(slugs).toContain("audit-logs");
+  });
+
+  it("wires the audit erasure afterDelete hook on users (A6)", async () => {
+    const resolved = await config;
+    const users = resolved.collections?.find((c) => c.slug === "users");
+    expect(users?.hooks?.afterDelete?.length ?? 0).toBeGreaterThan(0);
+  });
+
   it("registers no feature globals (none remain)", async () => {
     const resolved = await config;
     const slugs = resolved.globals?.map((g) => g.slug) ?? [];

packages/core-cms/src/payload.config.ts

@@ -4,14 +4,45 @@ import { lexicalEditor } from "@payloadcms/richtext-lexical";
 import path from "node:path";
 import { fileURLToPath } from "node:url";
 
-import { users } from "@repo/auth/cms";
+import {
+  withRetentionTombstone,
+  buildRetentionPurgeTask,
+} from "@repo/core-shared/payload";
+import {
+  auditLogsCollection,
+  createReqScopedAuditErasureHook,
+} from "@repo/core-audit";
+import { users as usersBase } from "@repo/auth/cms";
 
 const filename = fileURLToPath(import.meta.url);
 const dirname = path.dirname(filename);
 
+// GDPR audit erasure (audit finding A6): when a users row is hard-deleted
+// (admin expunge, DSR cascade-hard, retention purge), pseudonymize that
+// subject's audit-log entries so the trail keeps its shape without PII linkage.
+const users = {
+  ...usersBase,
+  hooks: {
+    ...usersBase.hooks,
+    afterDelete: [
+      ...(usersBase.hooks?.afterDelete ?? []),
+      createReqScopedAuditErasureHook(),
+    ],
+  },
+};
+
+// Collections declaring custom.retention.postDeletion get the soft-delete
+// tombstone field (`deletedAt`) so the DSR soft delete can stamp rows and the
+// retention purge job can grace-purge them (audit finding A2).
+const collections = [
+  ...[users].map(withRetentionTombstone),
+  // Local audit sink (A6) — required for PayloadAuditLog.record() to work.
+  auditLogsCollection,
+];
+
 export default buildConfig({
   editor: lexicalEditor(),
-  collections: [users],
+  collections,
   globals: [],
   secret: process.env.PAYLOAD_SECRET || "default-secret-change-me",
   db: postgresAdapter({
@@ -21,6 +52,14 @@ export default buildConfig({
         "postgresql://postgres:postgres@localhost:5433/template",
     },
   }),
+  jobs: {
+    // Task definitions for the retention purge (audit finding A3):
+    // registerRetentionPurgeJobs (called from bindAllProduction) enqueues
+    // `retention-purge--<slug>` jobs; these definitions let Payload run them.
+    tasks: collections
+      .filter((c) => Boolean(c.custom?.retention?.purgeSchedule))
+      .map((c) => buildRetentionPurgeTask(c.slug)) as never,
+  },
   typescript: {
     outputFile: path.resolve(dirname, "generated-types.ts"),
   },