src/__tests__/petProfileSummary.test.ts

@@ -1,23 +1,37 @@
 /**
- * GET /pets/:id/profile-summary tests
+ * Pet Profile Summary Tests
  *
- * GRO-2014 regression coverage:
- *   - Empty-body 500 must never escape the route — the onError handler
- *     converts unhandled errors into a structured JSON 500.
- *   - Malformed UUIDs must return 404 (not 500 via a Postgres uuid cast).
- *   - Missing staff context must return 401 (not TypeError on staffRow.id).
- *   - Pet not found must return 404.
- *   - Groomer with no appointment linkage must return 403.
- *   - Manager and groomer with linkage must receive the summary body.
+ * Covers GET /api/pets/:id/profile-summary in the deployed tree (root src/).
+ *
+ * Two suites share one mock harness:
+ *
+ *   1. GRO-2013 owner-bypass (the deployed-tree port of #135):
+ *      A customer who is auto-provisioned as a `groomer` staff row by rbac.ts
+ *      (with no appointment linkage) may still read their own pet's summary
+ *      when they supply a valid X-Impersonation-Session-Id whose clientId
+ *      matches the pet's clientId.
+ *
+ *   2. GRO-2014 error handling (deployed tree):
+ *      - Empty-body 500 must never escape the route — the onError handler
+ *        converts unhandled errors into a structured JSON 500.
+ *      - Malformed UUIDs must return 404 (not 500 via a Postgres uuid cast).
+ *      - Missing staff context must return 401 (not TypeError on staffRow.id).
+ *      - Pet not found must return 404.
+ *      - Groomer with no appointment linkage must return 403.
+ *      - Manager and groomer with linkage must receive the summary body.
+ *
+ * Deployed tree handler: src/routes/pets.ts. The mock queries the
+ * `appointments` table (the live schema) for visit history, not
+ * `groomingVisitLogs`.
  */
 import { describe, it, expect, vi, beforeEach } from "vitest";
 import { Hono } from "hono";
 import type { AppEnv, StaffRow } from "../middleware/rbac.js";
 
-// ─── Fixtures ────────────────────────────────────────────────────────────────
+// ─── Staff fixtures ──────────────────────────────────────────────────────────
 
 const MANAGER: StaffRow = {
-  id: "00000000-0000-0000-0000-0000000000aa",
+  id: "staff-manager-id",
   oidcSub: "oidc-manager-sub",
   userId: null,
   role: "manager",
@@ -32,7 +46,7 @@ const MANAGER: StaffRow = {
 
 const GROOMER: StaffRow = {
   ...MANAGER,
-  id: "00000000-0000-0000-0000-0000000000bb",
+  id: "staff-groomer-id",
   oidcSub: "oidc-groomer-sub",
   role: "groomer",
   isSuperUser: false,
@@ -40,186 +54,274 @@ const GROOMER: StaffRow = {
   email: "groomer@example.com",
 };
 
-const PET_UUID = "11111111-1111-1111-1111-111111111111";
-const CLIENT_UUID = "22222222-2222-2222-2222-222222222222";
-const UNKNOWN_PET_UUID = "00000000-0000-0000-0000-000000000001";
-
-const PET_ROW = {
-  id: PET_UUID,
-  clientId: CLIENT_UUID,
-  name: "Biscuit",
-  species: "dog",
-  breed: "Beagle",
-  coatType: "short",
-  petSizeCategory: "medium",
-  weightKg: "12.50",
-  dateOfBirth: new Date("2020-01-01"),
+/**
+ * Mirrors the auto-provisioned "groomer" staff row rbac.ts creates for an
+ * OIDC user (e.g. uat-customer@groombook.dev) on first login: role=groomer,
+ * no appointment linkage.
+ */
+const CUSTOMER_STAFF: StaffRow = {
+  ...MANAGER,
+  id: "staff-customer-id",
+  oidcSub: null,
+  userId: "user-customer-id",
+  role: "groomer",
+  name: "UAT Customer",
+  email: "uat-customer@groombook.dev",
 };
 
-// ─── Mutable DB state ─────────────────────────────────────────────────────────
+// ─── Mutable mock state ─────────────────────────────────────────────────────
 
-interface DbState {
-  petRow: typeof PET_ROW | null;
-  linkageRow: { id: string } | null;
-  recentHistory: Array<Record<string, unknown>>;
-  visitCount: number;
-  upcoming: Record<string, unknown> | null;
-  throwOnPetSelect: boolean;
-}
+const CLIENT_ID = "c0000001-0000-0000-0000-000000000001";
+const PET_ID = "c0000001-0000-0000-0000-000000000002";
+const OTHER_CLIENT_PET_ID = "c0000002-0000-0000-0000-000000000099";
+const UNKNOWN_PET_UUID = "00000000-0000-0000-0000-000000000001";
 
-let dbState: DbState;
+const futureDate = () => new Date(Date.now() + 30 * 60_000);
+const pastDate = () => new Date(Date.now() - 5 * 60_000);
 
-function resetDb() {
-  dbState = {
-    petRow: { ...PET_ROW },
-    linkageRow: { id: "appt-link" },
-    recentHistory: [],
-    visitCount: 0,
-    upcoming: null,
-    throwOnPetSelect: false,
+function makePet(overrides: Record<string, unknown> = {}) {
+  return {
+    id: PET_ID,
+    clientId: CLIENT_ID,
+    name: "Biscuit",
+    species: "dog",
+    breed: "Golden Retriever",
+    weightKg: "30.00",
+    dateOfBirth: null,
+    healthAlerts: null,
+    groomingNotes: null,
+    cutStyle: null,
+    shampooPreference: null,
+    specialCareNotes: null,
+    customFields: {},
+    petSizeCategory: "large",
+    coatType: "double",
+    photoKey: null,
+    photoUploadedAt: null,
+    createdAt: new Date("2024-01-01"),
+    updatedAt: new Date("2024-01-01"),
+    ...overrides,
   };
 }
 
-// ─── @groombook/db mock ──────────────────────────────────────────────────────
+function makeAppointment(overrides: Record<string, unknown> = {}) {
+  return {
+    id: "appt-1",
+    clientId: CLIENT_ID,
+    petId: PET_ID,
+    serviceId: "service-1",
+    staffId: GROOMER.id,
+    batherStaffId: null,
+    status: "completed",
+    startTime: new Date("2024-06-01T09:00:00Z"),
+    endTime: new Date("2024-06-01T11:00:00Z"),
+    notes: null,
+    priceCents: 6000,
+    seriesId: null,
+    seriesIndex: null,
+    groupId: null,
+    confirmationStatus: "confirmed",
+    confirmedAt: null,
+    cancelledAt: null,
+    confirmationToken: null,
+    customerNotes: null,
+    createdAt: new Date("2024-05-15"),
+    updatedAt: new Date("2024-05-15"),
+    ...overrides,
+  };
+}
+
+function makeService(overrides: Record<string, unknown> = {}) {
+  return {
+    id: "service-1",
+    name: "Full Groom",
+    description: null,
+    basePriceCents: 6000,
+    durationMinutes: 120,
+    active: true,
+    createdAt: new Date(),
+    updatedAt: new Date(),
+    ...overrides,
+  };
+}
+
+function makeSession(overrides: Record<string, unknown> = {}) {
+  return {
+    id: "sess-owner",
+    staffId: CUSTOMER_STAFF.id,
+    clientId: CLIENT_ID,
+    reason: "sso-bridge",
+    status: "active",
+    startedAt: new Date(),
+    endedAt: null,
+    expiresAt: futureDate(),
+    createdAt: new Date(),
+    ...overrides,
+  };
+}
+
+// ─── DB mock state ──────────────────────────────────────────────────────────
+
+let petsTable: Record<string, unknown>[];
+let appointmentsTable: Record<string, unknown>[];
+let servicesTable: Record<string, unknown>[];
+let sessionsTable: Record<string, unknown>[];
+
+// selectQueue: queries resolve in FIFO order. Each .from(table) result
+// returns a chain that resolves to the next queued row set on a terminal
+// call (.where()/.orderBy()/.limit()).
 //
-// Each select chain needs to know which table it's targeting and which columns
-// it's projecting so we can return the right mocked rows. We thread that state
-// through a per-call object whose chain methods all return `this`. The chain
-// is also `then`-able so any `await` position resolves to the rows.
+// A queued entry of `{ table: "pets", rows: null, throw: "..." }` tells the
+// mock to throw instead of returning rows — used by the GRO-2014 "JSON
+// envelope on downstream error" test. Any other queued entry with `rows`
+// resolves to those rows. An entry with `rows: []` returns an empty array
+// (no rows, no throw).
+let selectQueue: Array<{
+  table: string;
+  rows: unknown[] | null;
+  throw?: string;
+}> = [];
+
+function enqueue(table: string, rows: unknown[] = []) {
+  selectQueue.push({ table, rows });
+}
+
+function enqueueThrow(table: string, message: string) {
+  selectQueue.push({ table, rows: null, throw: message });
+}
+
+function resetMock() {
+  petsTable = [makePet()];
+  appointmentsTable = [makeAppointment()];
+  servicesTable = [makeService()];
+  sessionsTable = [makeSession()];
+  selectQueue = [];
+}
+
+// ─── Module mocks ───────────────────────────────────────────────────────────
 
 vi.mock("@groombook/db", () => {
-  const namedTable = (name: string) =>
-    new Proxy(
+  function makeTable(name: string) {
+    return new Proxy(
       { _name: name },
       {
-        get(_t, p) {
-          if (p === "_name") return name;
-          return { table: name, column: p };
+        get(target, prop) {
+          if (prop === "_name") return name;
+          if (prop === "$inferSelect") return {};
+          return { table: name, column: prop };
         },
       }
     );
-
-  const pets = namedTable("pets");
-  const appointments = namedTable("appointments");
-  const services = namedTable("services");
-  const staff = namedTable("staff");
-
-  // The full chain interface is intentionally loose — only `then` is exposed
-  // with a typed signature so vitest's await resolves to the right shape.
-  interface ChainLike {
-    from: (table: { _name: string }) => ChainLike;
-    where: (...args: unknown[]) => ChainLike;
-    innerJoin: (...args: unknown[]) => ChainLike;
-    leftJoin: (...args: unknown[]) => ChainLike;
-    orderBy: (...args: unknown[]) => ChainLike;
-    limit: (...args: unknown[]) => ChainLike;
-    then: <T = unknown[]>(
-      onfulfilled?: ((value: unknown[]) => T | PromiseLike<T>) | null
-    ) => Promise<T>;
   }
 
-  function buildSelect(projection?: Record<string, unknown>): ChainLike {
-    let targetTable = "";
-
-    const resolveRows = (): unknown[] => {
-      if (targetTable === "pets") {
-        if (dbState.throwOnPetSelect) {
-          throw new Error("simulated postgres uuid cast failure");
-        }
-        return dbState.petRow ? [dbState.petRow] : [];
-      }
-      if (targetTable === "appointments") {
-        const keys = projection ? Object.keys(projection) : [];
-        if (projection && keys.length === 1 && keys[0] === "id") {
-          return dbState.linkageRow ? [dbState.linkageRow] : [];
-        }
-        if (projection && keys.includes("count")) {
-          return [{ count: dbState.visitCount }];
-        }
-        if (projection && keys.includes("confirmationStatus")) {
-          return dbState.upcoming ? [dbState.upcoming] : [];
-        }
-        return dbState.recentHistory;
-      }
-      return [];
+  function sqlMock(_strings: TemplateStringsArray, ..._params: unknown[]) {
+    const queryString = _strings[0];
+    return {
+      queryChunks: [queryString],
+      as: (alias: string) => ({
+        queryChunks: [queryString],
+        fieldAlias: alias,
+        getSQL() { return this.queryChunks; },
+      }),
     };
+  }
 
-    const chain: ChainLike = {
-      from(table) {
-        targetTable = table._name;
-        return chain;
-      },
-      where() {
-        return chain;
-      },
-      innerJoin() {
-        return chain;
-      },
-      leftJoin() {
-        return chain;
-      },
-      orderBy() {
-        return chain;
-      },
-      limit() {
-        return chain;
-      },
-      then(onfulfilled) {
-        return Promise.resolve(resolveRows()).then(onfulfilled ?? undefined);
-      },
-    };
+  function takeQueuedRows(tableName: string): unknown[] {
+    const next = selectQueue.shift();
+    if (next && next.table === tableName) {
+      if (next.throw) {
+        throw new Error(next.throw);
+      }
+      return next.rows ?? [];
+    }
+    return [];
+  }
 
-    return chain;
+  // Wrap a finalised result in a Proxy that exposes chainable methods
+  // and the resolved rows. Each call to a chainable method (where/orderBy/
+  // limit/...) returns the SAME rows so the route's natural await on the
+  // chain resolves to the queued data.
+  function wrapRows(rows: unknown[]): unknown {
+    return new Proxy(rows, {
+      get(target, prop: string | symbol) {
+        if (prop === "where" || prop === "orderBy" || prop === "limit"
+          || prop === "leftJoin" || prop === "innerJoin" || prop === "from") {
+          return () => wrapRows(rows);
+        }
+        if (prop === "then") {
+          return (onFulfilled?: (v: unknown) => unknown, onRejected?: (e: unknown) => unknown) =>
+            Promise.resolve(rows).then(onFulfilled, onRejected);
+        }
+        if (prop === Symbol.iterator) {
+          return function* () { for (const v of target) yield v; };
+        }
+        if (prop === Symbol.asyncIterator) {
+          return async function* () { for (const v of target) yield v; };
+        }
+        // @ts-expect-error proxy access
+        return target[prop];
+      },
+    });
   }
 
   return {
     getDb: () => ({
-      select: (projection?: Record<string, unknown>) => buildSelect(projection),
+      select: (_cols?: Record<string, unknown>) => ({
+        from: (table: { _name?: string }) => wrapRows(takeQueuedRows(table._name ?? "")),
+      }),
+      insert: () => ({ values: () => ({ returning: () => [{}] }) }),
+      update: () => ({ set: () => ({ where: () => ({ returning: () => [{}] }) }) }),
+      delete: () => ({ where: () => ({ returning: () => [{}] }) }),
     }),
-    pets,
-    appointments,
-    services,
-    staff,
-    and: vi.fn(() => ({ _op: "and" })),
-    or: vi.fn(() => ({ _op: "or" })),
-    eq: vi.fn(() => ({ _op: "eq" })),
-    desc: vi.fn((arg: unknown) => arg),
-    exists: vi.fn((arg: unknown) => arg),
-    sql: Object.assign(
-      () => ({ _op: "sql" }),
-      { [Symbol.toPrimitive]: () => "sql" }
-    ),
+    pets: makeTable("pets"),
+    appointments: makeTable("appointments"),
+    staff: makeTable("staff"),
+    services: makeTable("services"),
+    impersonationSessions: makeTable("impersonationSessions"),
+    and: vi.fn((..._args: unknown[]) => ({})),
+    desc: vi.fn((c: unknown) => c),
+    eq: vi.fn((_a: unknown, _b: unknown) => ({})),
+    exists: vi.fn(() => true),
+    or: vi.fn((..._args: unknown[]) => ({})),
+    sql: sqlMock,
   };
 });
 
 vi.mock("../lib/s3.js", () => ({
-  getPresignedUploadUrl: vi.fn().mockResolvedValue("https://example.com/put"),
-  getPresignedGetUrl: vi.fn().mockResolvedValue("https://example.com/get"),
-  deleteObject: vi.fn().mockResolvedValue(undefined),
+  getPresignedUploadUrl: vi.fn(),
+  getPresignedGetUrl: vi.fn(),
+  deleteObject: vi.fn(),
 }));
 
+// ─── Import after mocks are set up ──────────────────────────────────────────
+
 const { petsRouter } = await import("../routes/pets.js");
 
-// ─── App builder ─────────────────────────────────────────────────────────────
+// ─── App builder ────────────────────────────────────────────────────────────
 
 function buildApp(staffRow: StaffRow | null) {
   const app = new Hono<AppEnv>();
   app.use("*", async (c, next) => {
-    if (staffRow) c.set("staff", staffRow);
+    if (staffRow) {
+      c.set("jwtPayload", { sub: staffRow.oidcSub ?? staffRow.userId ?? "" });
+      c.set("staff", staffRow);
+    }
     await next();
   });
   app.route("/pets", petsRouter);
   return app;
 }
 
+// ─── Reset before each test ─────────────────────────────────────────────────
+
 beforeEach(() => {
-  resetDb();
+  resetMock();
   vi.clearAllMocks();
 });
 
-// ─── Tests ───────────────────────────────────────────────────────────────────
+// ─── GRO-2014 error-handling suite ──────────────────────────────────────────
 
-describe("GET /pets/:id/profile-summary — GRO-2014 error handling", () => {
+describe("GET /:id/profile-summary — GRO-2014 error handling", () => {
   it("returns 404 (not 500) for a malformed UUID path param", async () => {
     const app = buildApp(MANAGER);
     const res = await app.request("/pets/not-a-uuid/profile-summary");
@@ -237,7 +339,7 @@ describe("GET /pets/:id/profile-summary — GRO-2014 error handling", () => {
   });
 
   it("returns 404 when authenticated and pet does not exist", async () => {
-    dbState.petRow = null;
+    enqueue("pets", []);
     const app = buildApp(MANAGER);
     const res = await app.request(`/pets/${UNKNOWN_PET_UUID}/profile-summary`);
     expect(res.status).toBe(404);
@@ -246,40 +348,222 @@ describe("GET /pets/:id/profile-summary — GRO-2014 error handling", () => {
   });
 
   it("returns 403 when groomer has no appointment linkage to the pet's client", async () => {
-    dbState.linkageRow = null;
+    enqueue("pets", petsTable);
+    enqueue("appointments", []); // linkage check returns empty → 403
     const app = buildApp(GROOMER);
-    const res = await app.request(`/pets/${PET_UUID}/profile-summary`);
+    const res = await app.request(`/pets/${PET_ID}/profile-summary`);
     expect(res.status).toBe(403);
     const body = (await res.json()) as { error: string };
     expect(body.error).toBe("Forbidden");
   });
 
   it("returns 200 with summary for a manager (no groomer linkage check)", async () => {
+    enqueue("pets", petsTable);
+    enqueue("appointments", appointmentsTable); // history
+    enqueue("appointments", [{ count: 1 }]);    // visit count
+    enqueue("appointments", []);                // upcoming (none)
     const app = buildApp(MANAGER);
-    const res = await app.request(`/pets/${PET_UUID}/profile-summary`);
+    const res = await app.request(`/pets/${PET_ID}/profile-summary`);
     expect(res.status).toBe(200);
     const body = (await res.json()) as Record<string, unknown>;
-    expect(body.id).toBe(PET_UUID);
+    expect(body.id).toBe(PET_ID);
     expect(body.name).toBe("Biscuit");
-    expect(body.visitCount).toBe(0);
+    expect(body.visitCount).toBe(1);
     expect(body.upcomingAppointment).toBeNull();
-    expect(body.recentGroomingHistory).toEqual([]);
+    expect(body.recentGroomingHistory).toBeInstanceOf(Array);
   });
 
-  it("returns 200 with summary for a groomer with linkage", async () => {
+  it("returns 200 with summary for a groomer with appointment linkage", async () => {
+    enqueue("pets", petsTable);
+    enqueue("appointments", [{ id: "appt-1" }]); // linkage found
+    enqueue("appointments", appointmentsTable);  // history
+    enqueue("appointments", [{ count: 1 }]);     // visit count
+    enqueue("appointments", []);                 // upcoming
     const app = buildApp(GROOMER);
-    const res = await app.request(`/pets/${PET_UUID}/profile-summary`);
+    const res = await app.request(`/pets/${PET_ID}/profile-summary`);
     expect(res.status).toBe(200);
     const body = (await res.json()) as Record<string, unknown>;
-    expect(body.id).toBe(PET_UUID);
+    expect(body.id).toBe(PET_ID);
   });
 
   it("returns a JSON envelope (not empty body) when a downstream query throws", async () => {
-    dbState.throwOnPetSelect = true;
+    enqueueThrow("pets", "simulated postgres uuid cast failure");
     const app = buildApp(MANAGER);
-    const res = await app.request(`/pets/${PET_UUID}/profile-summary`);
+    const res = await app.request(`/pets/${PET_ID}/profile-summary`);
     expect(res.status).toBe(500);
     const body = (await res.json()) as { error: string };
     expect(body.error).toBe("Internal Server Error");
   });
 });
+
+// ─── GRO-2013 owner-bypass suite ────────────────────────────────────────────
+
+describe("GET /:id/profile-summary — owner-bypass (GRO-2013)", () => {
+  it("returns 404 when the pet does not exist", async () => {
+    enqueue("pets", []);
+    const app = buildApp(MANAGER);
+    const res = await app.request(`/pets/${PET_ID}/profile-summary`);
+    expect(res.status).toBe(404);
+  });
+
+  it("returns 200 with aggregated profile for a manager", async () => {
+    enqueue("pets", petsTable);
+    enqueue("appointments", appointmentsTable);
+    enqueue("appointments", [{ count: 1 }]);
+    enqueue("appointments", []);
+
+    const app = buildApp(MANAGER);
+    const res = await app.request(`/pets/${PET_ID}/profile-summary`);
+    expect(res.status).toBe(200);
+    const body = await res.json();
+    expect(body.id).toBe(PET_ID);
+    expect(body.name).toBe("Biscuit");
+    expect(body.recentGroomingHistory).toBeInstanceOf(Array);
+    expect(body.visitCount).toBe(1);
+    expect(body.upcomingAppointment).toBeNull();
+  });
+
+  it("returns 200 for a groomer with appointment linkage to the pet's client", async () => {
+    enqueue("pets", petsTable);
+    enqueue("appointments", [{ id: "appt-1" }]); // linkage found
+    enqueue("appointments", appointmentsTable);
+    enqueue("appointments", [{ count: 1 }]);
+    enqueue("appointments", []);
+
+    const app = buildApp(GROOMER);
+    const res = await app.request(`/pets/${PET_ID}/profile-summary`);
+    expect(res.status).toBe(200);
+  });
+
+  it("returns 403 for a groomer with no appointment linkage and no bypass header", async () => {
+    enqueue("pets", petsTable);
+    enqueue("appointments", []); // no linkage
+
+    const app = buildApp(GROOMER);
+    const res = await app.request(`/pets/${PET_ID}/profile-summary`);
+    expect(res.status).toBe(403);
+  });
+
+  it("customer-as-groomer with valid active session for pet's client returns 200", async () => {
+    enqueue("pets", petsTable);
+    enqueue("impersonationSessions", sessionsTable); // active session found
+    enqueue("appointments", appointmentsTable);
+    enqueue("appointments", [{ count: 1 }]);
+    enqueue("appointments", []);
+
+    const app = buildApp(CUSTOMER_STAFF);
+    const res = await app.request(`/pets/${PET_ID}/profile-summary`, {
+      headers: { "X-Impersonation-Session-Id": "sess-owner" },
+    });
+    expect(res.status).toBe(200);
+    const body = await res.json();
+    expect(body.id).toBe(PET_ID);
+  });
+
+  it("customer-as-groomer with no header still gets 403 (no bypass)", async () => {
+    enqueue("pets", petsTable);
+
+    const app = buildApp(CUSTOMER_STAFF);
+    const res = await app.request(`/pets/${PET_ID}/profile-summary`);
+    expect(res.status).toBe(403);
+  });
+
+  it("customer-as-groomer with session for a DIFFERENT client gets 403 (cross-tenant blocked)", async () => {
+    // Session exists but clientId !== pet.clientId → bypass does not apply
+    // → falls through to groomer linkage check → no linkage → 403
+    enqueue("pets", petsTable);
+    enqueue("impersonationSessions", [
+      makeSession({
+        id: "sess-other-client",
+        clientId: "c0000000-0000-0000-0000-000000000099", // different from CLIENT_ID
+      }),
+    ]);
+    enqueue("appointments", []); // no linkage → 403
+
+    const app = buildApp(CUSTOMER_STAFF);
+    const res = await app.request(`/pets/${PET_ID}/profile-summary`, {
+      headers: { "X-Impersonation-Session-Id": "sess-other-client" },
+    });
+    expect(res.status).toBe(403);
+  });
+
+  it("customer-as-groomer with expired session still gets 403", async () => {
+    enqueue("pets", petsTable);
+    enqueue("impersonationSessions", [
+      makeSession({ id: "sess-expired", expiresAt: pastDate() }),
+    ]);
+    enqueue("appointments", []); // no linkage → 403
+
+    const app = buildApp(CUSTOMER_STAFF);
+    const res = await app.request(`/pets/${PET_ID}/profile-summary`, {
+      headers: { "X-Impersonation-Session-Id": "sess-expired" },
+    });
+    expect(res.status).toBe(403);
+  });
+
+  it("customer-as-groomer with ended (status != active) session still gets 403", async () => {
+    enqueue("pets", petsTable);
+    enqueue("impersonationSessions", [
+      makeSession({ id: "sess-ended", status: "ended" }),
+    ]);
+    enqueue("appointments", []); // no linkage → 403
+
+    const app = buildApp(CUSTOMER_STAFF);
+    const res = await app.request(`/pets/${PET_ID}/profile-summary`, {
+      headers: { "X-Impersonation-Session-Id": "sess-ended" },
+    });
+    expect(res.status).toBe(403);
+  });
+
+  it("customer-as-groomer with unknown session id still gets 403", async () => {
+    enqueue("pets", petsTable);
+    enqueue("impersonationSessions", []); // session not found
+    enqueue("appointments", []); // no linkage → 403
+
+    const app = buildApp(CUSTOMER_STAFF);
+    const res = await app.request(`/pets/${PET_ID}/profile-summary`, {
+      headers: { "X-Impersonation-Session-Id": "sess-unknown" },
+    });
+    expect(res.status).toBe(403);
+  });
+
+  it("manager does NOT need the impersonation header (existing role check still works)", async () => {
+    enqueue("pets", petsTable);
+    enqueue("appointments", appointmentsTable);
+    enqueue("appointments", [{ count: 1 }]);
+    enqueue("appointments", []);
+
+    const app = buildApp(MANAGER);
+    const res = await app.request(`/pets/${PET_ID}/profile-summary`);
+    expect(res.status).toBe(200);
+  });
+
+  it("groomer with linkage to pet's client still works (regression — no regression from bypass)", async () => {
+    enqueue("pets", petsTable);
+    enqueue("appointments", [{ id: "appt-1" }]); // linkage found
+    enqueue("appointments", appointmentsTable);
+    enqueue("appointments", [{ count: 1 }]);
+    enqueue("appointments", []);
+
+    const app = buildApp(GROOMER);
+    const res = await app.request(`/pets/${PET_ID}/profile-summary`);
+    expect(res.status).toBe(200);
+  });
+
+  it("owner-bypass: customer cannot view another client's pet (cross-tenant block)", async () => {
+    // The customer has a valid session for CLIENT_ID, but the pet belongs
+    // to a different client → isOwner=false → falls through to groomer
+    // linkage check → 403.
+    enqueue("pets", [
+      makePet({ id: OTHER_CLIENT_PET_ID, clientId: "c0000002-0000-0000-0000-000000000002" }),
+    ]);
+    enqueue("impersonationSessions", sessionsTable); // valid session, but for CLIENT_ID
+    enqueue("appointments", []); // no linkage → 403
+
+    const app = buildApp(CUSTOMER_STAFF);
+    const res = await app.request(`/pets/${OTHER_CLIENT_PET_ID}/profile-summary`, {
+      headers: { "X-Impersonation-Session-Id": "sess-owner" },
+    });
+    expect(res.status).toBe(403);
+  });
+});

src/routes/pets.ts

@@ -7,6 +7,7 @@ import {
   eq,
   exists,
   getDb,
+  impersonationSessions,
   or,
   pets,
   appointments,
@@ -126,6 +127,35 @@ petsRouter.get("/:id", async (c) => {
   return c.json(row);
 });
 
+/**
+ * Resolves the clientId from the X-Impersonation-Session-Id header, if present and active.
+ * Used by staff routes to allow a customer (auto-provisioned as a `groomer` staff row
+ * by rbac.ts) to access their own pet's data when they are the rightful owner.
+ *
+ * Returns null when the header is missing, the session is unknown/expired/ended, or the
+ * session exists but has no clientId — callers should treat null as "no owner-bypass".
+ */
+async function resolveImpersonationClientId(
+  db: ReturnType<typeof getDb>,
+  c: { req: { header: (name: string) => string | undefined } }
+): Promise<string | null> {
+  const sessionId = c.req.header("X-Impersonation-Session-Id");
+  if (!sessionId) return null;
+  const [session] = await db
+    .select({
+      clientId: impersonationSessions.clientId,
+      status: impersonationSessions.status,
+      expiresAt: impersonationSessions.expiresAt,
+    })
+    .from(impersonationSessions)
+    .where(eq(impersonationSessions.id, sessionId))
+    .limit(1);
+  if (!session) return null;
+  if (session.status !== "active") return null;
+  if (session.expiresAt <= new Date()) return null;
+  return session.clientId;
+}
+
 petsRouter.get("/:id/profile-summary", async (c) => {
   const db = getDb();
   const petId = c.req.param("id");
@@ -152,8 +182,18 @@ petsRouter.get("/:id/profile-summary", async (c) => {
   const [pet] = await db.select().from(pets).where(eq(pets.id, petId));
   if (!pet) return c.json({ error: "Not found" }, 404);
 
-  // Groomer RBAC: check appointment linkage to this pet's client
+  // Owner-bypass (GRO-2013): a customer who supplies a valid
+  // X-Impersonation-Session-Id for the pet's owning client may read their
+  // own pet's summary, even though rbac.ts auto-provisions them as a
+  // `groomer` staff row with no appointment linkage.
+  let isOwner = false;
   if (isGroomer) {
+    const ownerClientId = await resolveImpersonationClientId(db, c);
+    isOwner = !!ownerClientId && ownerClientId === pet.clientId;
+  }
+
+  // Groomer RBAC: check appointment linkage to this pet's client
+  if (isGroomer && !isOwner) {
     const [linkage] = await db
       .select({ id: appointments.id })
       .from(appointments)