Apply all bug fixes from BUGFIX_AUFTRAG.md, implement dashboard enhancements (trade history, equity curve, stats, events), fix screener double calculation, update AI provider to Ollama with Nemotron-3-Super, and include all changes from previous session

fix: Alle 9 Bugfixes aus hermes-bugfixes.md angewendet

Initial commit: Trading Bot v1.0 - Paper Trading mit KI