refactor(auth): unify use-case I/O schemas + presenter + feature error map

Per Plan 9 (spec R1-R28):
- Use cases: input + output schemas (signIn, signUp); input-only for
  signOut (void output). Use case body validates output via
  outputSchema.parse before returning.
- Controllers: receive `unknown`; safeParse with the use-case schema;
  presenter (returning cookie) for signIn/signUp; void return for
  signOut.
- New integrations/api/procedures.ts with authProcedure built via
  defineErrorMiddleware([[InputParseError,"BAD_REQUEST"],
  [AuthenticationError,"UNAUTHORIZED"], [UnauthenticatedError,
  "UNAUTHORIZED"], [UnauthorizedError,"FORBIDDEN"]]).
- Router uses authProcedure + .input(xInputSchema) for every procedure.
- src/index.ts exports schemas + types + IUseCase/IController aliases.
- package.json gains ./ui subpath; src/ui/index.ts placeholder
  (auth has no query builders today).
- New tests: R25 output-validation per use case (signIn, signUp);
  R26 router error-mapping (UNAUTHORIZED on missing user,
  BAD_REQUEST on schema fail).

Refactor log: §1, §2, §3.1, §3.2, §3.3, §5.1, §5.2, §6.1, §6.2
Spec: R1–R6, R8–R15, R18, R19, R22–R26

packages/auth/src/interface-adapters/controllers/sign-out.controller.ts

@@ -1,15 +1,17 @@
 import { InputParseError } from "../../entities/errors/common";
-import type { Cookie } from "../../entities/models/cookie";
-import type { ISignOutUseCase } from "../../application/use-cases/sign-out.use-case";
+import {
+  signOutInputSchema,
+  type ISignOutUseCase,
+} from "../../application/use-cases/sign-out.use-case";
 
 export type ISignOutController = ReturnType<typeof signOutController>;
 
 export const signOutController =
   (signOutUseCase: ISignOutUseCase) =>
-  async (sessionId: string | undefined): Promise<Cookie> => {
-    if (!sessionId) {
-      throw new InputParseError("Must provide a session ID");
+  async (input: unknown): Promise<void> => {
+    const parsed = signOutInputSchema.safeParse(input);
+    if (!parsed.success) {
+      throw new InputParseError("Invalid sign-out input", { cause: parsed.error });
     }
-    const { blankCookie } = await signOutUseCase(sessionId);
-    return blankCookie;
+    await signOutUseCase(parsed.data);
   };