Problem: Night-Plans liefen nur ~4 Minuten statt geschaetzter 330 Minuten, "Success 7/7" war Fake weil Agents nur Single-Shot-Text produzierten, 03:00-Fallback lief sinnlos nochmal
Ursache: Keine Output-Qualitaetsmessung, kein Feedback-Loop, kein Double-Run-Schutz, Agents bekamen keinen echten Projektkontext
Fix: `night-plan-quality-gate.py` (Pre-Execution: historische Scores, Task-Downgrade, Context-Injection), `night-output-scorer.py` (Post-Execution: Output-Groesse, Code-Bloecke, Git-Impact, Build-Status, 0-100 Score), Double-Run-Prevention in `nightaction-execute.sh`, Layer 2 Quality-Learning in `build-night-plan.py`. Baseline gescored: avg 30-39/100 (Grade C), Head Reviews 20/100 (Grade D)