fix(dogfood): the criteria-less legacy sharing-rule row carries the organization the admin acts in

The case "a criteria-less rule already IN the table shares nothing and loses
its grants" wrote its legacy row at the driver seam with no organization_id.
Since the organization-less readers of sharing rules retired (ADR-0131 D1/D8,
7cacad5), no admin read resolves such a row, so POST
/sharing/rules/srule_3896_legacy/evaluate answered 404 before the criteria
guard the case pins was reached.

The row now carries the admin's active organization, read off the admin's
own session: the shape a pre-gate row has once the organization-ownership
ceremony attributes it (ADR-0131 D10). Every assertion is unchanged: evaluate
answers below 300, matches 0 records, and materialises no grant.

Claude-Session: https://claude.ai/code/session_01LmjU2x1faLZ39DVTFyVca6
Co-authored-by: Claude <noreply@anthropic.com>

Author: claude

packages/qa/dogfood/test/sharing-rule-criteria-required.dogfood.test.ts

@@ -134,6 +134,21 @@ describe('#3896 — a sharing rule POSTed without criteria is rejected, never ma
     // defense-in-depth the flip bought. A true legacy row predates all of it:
     // write it at the DRIVER seam, the same level a pre-gate deployment's
     // storage actually holds it.
+    //
+    // The row carries the organization the admin acts in. That is the shape a
+    // pre-gate row has once the organization-ownership upgrade ceremony has
+    // attributed it (ADR-0131 D10), and the only shape a certified deployment
+    // holds. A row with no organization is one no admin read resolves any more
+    // (ADR-0131 D1/D8: the caller's own organization only), so `evaluate`
+    // would answer 404 before the criteria guard this case pins is reached.
+    // The organization is read off the admin's own session, the field the
+    // request context of the `evaluate` call below is resolved from.
+    const me = await stack.apiAs(admin, 'GET', '/auth/get-session');
+    expect(me.status, 'get-session answers for the admin').toBe(200);
+    const organizationId = ((await me.json()) as { session?: { activeOrganizationId?: string | null } })
+      .session?.activeOrganizationId;
+    expect(organizationId, 'the admin acts in an organization').toMatch(/^\S+$/);
+
     const id = 'srule_3896_legacy';
     const driver = (ql as any).getDriverForObject('sys_sharing_rule');
     expect(driver, 'sys_sharing_rule driver must be resolvable').toBeTruthy();
@@ -147,6 +162,7 @@ describe('#3896 — a sharing rule POSTed without criteria is rejected, never ma
       recipient_id: 'sales_rep',
       access_level: 'read',
       active: true,
+      organization_id: organizationId,
     });
 
     const res = await stack.apiAs(admin, 'POST', `${RULES}/${id}/evaluate`, {});