Fixes two critical bugs in AI analysis storage:
1. History now works - analyses are saved, not overwritten
- Removed DELETE statements before INSERT in insights.py
- All analyses are now preserved per scope
- Displayed in descending order by creation date
2. Pipeline saves under correct scope 'pipeline' instead of 'gesamt'
- Changed scope from 'gesamt' to 'pipeline' in pipeline endpoint
- Pipeline results now appear under correct category in history
3. Fixed pipeline appearing twice in UI
- Filter now excludes both 'pipeline_*' and 'pipeline' from individual list
- Pipeline only appears in dedicated section at top
Changes:
- backend/routers/insights.py: Removed DELETE, changed scope to 'pipeline'
- frontend/src/pages/Analysis.jsx: Fixed filter to exclude 'pipeline'
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>