v3.5.5 — cloud infrastructure testing + REPL polish

Cloud testing:
- +17 cloud agents (agents_md/infra/) for AWS/GCP/Azure: IAM/RBAC privesc,
  storage exposure (S3/GCS/Blob), compute & network exposure + IMDS, secrets
  (Secrets Manager / Secret Manager / Key Vault), SA/SP key abuse, Entra ID
  enum, and a multi-cloud footprint/identity recon agent. Library 348 -> 365.
- creds.yaml gains aws:/gcp:/azure: blocks (Creds::cloud). The harness exports
  provider env vars (AWS_*, GOOGLE_APPLICATION_CREDENTIALS, AZURE_* SP) so
  aws/gcloud/az authenticate automatically, and injects a cloud directive. GCP
  inline JSON is written to a temp file. Best-practice auth per provider.

REPL polish:
- /chain <n> (attack-chain depth, wired to Session.chain_depth), /agents list
  (library category counts incl. infra/cloud); /show now shows chain-depth and
  enabled integrations. Tab-completion + help updated.

Docs: README badges (365 agents / 14 providers), new "Cloud credentials" section;
RELEASE notes. Version 3.5.4 -> 3.5.5.

setup.sh

@@ -25,7 +25,7 @@ cat <<'BANNER'
 
    ███╗   ██╗███████╗██╗   ██╗██████╗  ██████╗
    ████╗  ██║██╔════╝██║   ██║██╔══██╗██╔═══██╗   NeuroSploit installer
-   ██╔██╗ ██║█████╗  ██║   ██║██████╔╝██║   ██║   v3.5.4 — Rust harness
+   ██╔██╗ ██║█████╗  ██║   ██║██████╔╝██║   ██║   v3.5.5 — Rust harness
    ██║╚██╗██║██╔══╝  ██║   ██║██╔══██╗██║   ██║   by Joas A Santos
    ██║ ╚████║███████╗╚██████╔╝██║  ██║╚██████╔╝   & Red Team Leaders
    ╚═╝  ╚═══╝╚══════╝ ╚═════╝ ╚═╝  ╚═╝ ╚═════╝