revert: roll back v12.3.3 (Issue Blowout 2026)

SessionStart context injection regressed in v12.3.3 — no memory
context is being delivered to new sessions. Rolling back to the
v12.3.2 tree state while the regression is investigated.

Reverts #2080.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/services/server/Middleware.ts

@@ -10,6 +10,5 @@
 export {
   createMiddleware,
   requireLocalhost,
-  requireAuth,
   summarizeRequestBody
 } from '../worker/http/middleware.js';