The manual previously assumed `claude` was already installed and never
explained the strategic rationale for mixing US (Anthropic) and CN
(Z.ai/Moonshot/Qwen/DeepSeek) models. Both gaps are now closed.
New section 1 "Warum Modelle aus USA und China parallel?" — five
concrete reasons: resilience against outages/sanctions, price pressure,
no vendor lock-in, per-task model choice, perspective diversity; plus a
data-flow caveat (US/CN endpoints move prompts into foreign
jurisdictions).
New section 3 "Setup auf einem jungfräulichen Linux-Host" — Debian/Ubuntu
walkthrough from a bare system: base packages, Node 18+ via NodeSource or
nvm, `npm install -g @anthropic-ai/claude-code` (no sudo), Pro login,
OpenRouter account/key, repo clone+install; plus a containerized
alternative (Dockerfile, key via -e at runtime, never baked in).
Renumbered subsequent sections 1-11; fixed all internal cross-references;
file listing now includes tests/ and Makefile.
Verified facts: npm package name and no-sudo warning per official Claude
Code docs; Node 18+ requirement; NodeSource/nvm install paths.
Co-Authored-By: Claude <noreply@anthropic.com>
