Merge branch 'sp24-doc-posture-alignment'

Align CLAUDE.md + REQUIREMENTS.md + ARCHITECTURE.md with the auth work
that landed on main on 2026-06-23; emit an AUTH_DISABLED WARNING at boot
when AUTH_DISABLED is true so misconfigured production deploys fail loudly.

Closes requirements R-1 (was Open; auth shipped via the origin/main merge,
SP24 reconciles the docs).

* CLAUDE.md — track in git for the first time
* docs/REQUIREMENTS.md + docs/ARCHITECTURE.md — replace every stale
  'no auth' / 'no authentication' / 'no second party to authenticate'
  claim with the v1 posture (bcrypt + HttpOnly session cookie; first
  admin bootstrapped from CYCLONE_ADMIN_USERNAME + CYCLONE_ADMIN_PASSWORD)
* backend/src/cyclone/__main__.py — boot-time WARNING when AUTH_DISABLED
* ARCHITECTURE §4.2 module map — add cyclone.auth.* package
* ARCHITECTURE §6.1 migrations table — list 0013 + 0014 with renumbering note
* .superpowers/skills/{cyclone-tests,cyclone-api-router,cyclone-spec} —
  add AUTH_DISABLED / matrix_gate / auth-aware threat-model guidance

Spec: docs/superpowers/specs/2026-06-23-cyclone-auth-posture-alignment-design.md
Plan: docs/superpowers/plans/2026-06-23-cyclone-auth-posture-alignment.md

backend/src/cyclone/__main__.py

@@ -24,6 +24,20 @@ def main() -> None:
     from cyclone.auth import bootstrap
     bootstrap.run()
 
+    # SP24: if the AUTH_DISABLED escape hatch is on, scream at boot so a
+    # misconfigured production deploy fails loudly. The flag is flipped by
+    # ``CYCLONE_AUTH_DISABLED=1`` (see ``cyclone.auth.bootstrap``) and by the
+    # pytest conftest autouse fixture (see ``.superpowers/skills/cyclone-tests``).
+    from cyclone.auth import deps as _auth_deps
+
+    if _auth_deps.AUTH_DISABLED:
+        import logging
+
+        logging.getLogger("cyclone").warning(
+            "AUTH_DISABLED is set (CYCLONE_AUTH_DISABLED=1) — all requests "
+            "treated as admin, dev only. Do NOT enable this in production."
+        )
+
     if len(sys.argv) >= 2 and sys.argv[1] == "serve":
         port = os.environ.get("CYCLONE_PORT", "8000")
         reload = os.environ.get("CYCLONE_RELOAD", "0") == "1"