Updated documentation to reflect the migration from WebUI to EnvelopeGenerator.Server, including a new "Documentation Catalog" in `AGENTS.md`. Adjusted route mappings, render modes, and directory structure for Blazor components.
Revised coordinate system documentation and CSS for status colors to align with the new architecture. Updated YARP proxy and PDF.js configuration paths.
Migrated `MIGRATION_PLAN.md` to modernize `EnvelopeGenerator.Service` with C# Worker Service equivalents. Updated `FORM_APPLICATION_CONTEXT.md` and `RECEIVER_PDF_VIEWER_CONTEXT.md` to reflect the new architecture and planned viewer integration.
Fixed German translation issues in `fix-report-label-read-and-confirmed.md`. Standardized formatting and terminology across all files.
- Architecture overview (Blazor Auto Server+WASM hybrid)
- Critical development commands (both API and WebUI must run)
- Route structure with render mode requirements
- Coordinate system conversions (INCHES in DB)
- API architecture quirks and missing endpoints
- Status color coding from legacy VB.NET app
- Common mistakes to avoid
- Configuration locations and migration status
