The German Betriebsrat is not a stakeholder you consult; it is a co-decision-maker under BetrVG §87(1) Nr. 6 whose statutory rights determine whether your AI deployment ships. This article walks the engineering deliverables for a Betriebsvereinbarung-friendly architecture — telemetry boundaries that distinguish system observability from employee surveillance at the substrate level, opt-out paths as first-class workflow, autonomy tiers (advisory/assist/act) enforced at code level, change-classification pipeline gating releases against Betriebsvereinbarung-impact tiers, German-language artefact pack. 8 anti-patterns, 5-stage maturity ladder, portable to French CSE, Austrian Betriebsrat, Dutch Ondernemingsraad, and the European Works Council framework.