docs(delivery): add a step-by-step quick start and a full pre-release section

1. "0. Quick start — run these in order" at the top of DELIVERY.md: five steps
   from an empty machine to a verified running stack, copy-pasteable, with no
   decisions to make. Covers which env vars must have a value (and how to
   generate the two JWT secrets), `pnpm build:release` BEFORE
   `docker compose build`, what the boot log should say, which banner is
   expected and which means a step was missed, and how to run the end-to-end
   check. Every command in it was executed verbatim to confirm it works.

2. "Before the real release" replaces the old three-item list:
   - A. blocking config: real JWT_SECRET and a SEPARATE JWT_CUSTOMER_SECRET,
     remove OTP_MASTER_CODE, configure the SMS credentials
   - B. credentials the reference leaked and that must be rotated (SEC-12,
     SEC-06) — same live accounts, never copied into this repo
   - C. parity work not finished: admin (financial documents, users and
     permissions incl. the still-open PERM-01, reports) and apps (MON-08 first,
     then STUB-05 SMS recipients, STUB-04, STUB-03, analytics), pointing at
     ISSUES.md for the rest

Also removed the obsolete `version:` key from docker-compose.yml, which printed
a deprecation warning on every compose command and made the checklist's output
noisy. Config re-validated.

Verified after these changes: container bundle is byte-identical to the local
release build (sha256 match), and that container was re-tested end to end:
compose e2e 32/32, complete-profile 38/38, report 40/40, expert login 36/36.
Locally: jest 54/54, build 5/5, typecheck clean on all four apps.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

docker-compose.yml

@@ -1,5 +1,5 @@
-version: '3.8'
-
+# No `version:` key — it is obsolete in Compose v2 and only prints a warning on
+# every command, which made the delivery checklist's output noisy.
 services:
   db:
     image: docker.arvancloud.ir/postgres:15-alpine