Initial commit: JDE Scoping Tool migration project

Set up repository with legacy .NET Framework 4.8 source (OLD/),
new .NET 10 Blazor solution (NEW/), OpenSpec specifications,
documentation, and project configuration.

openspec/project.md

@@ -0,0 +1,63 @@
+# JDE Scoping Tool Migration
+
+## Overview
+
+Migration of legacy .NET Framework 4.8 "LotFinder" application to .NET 10.
+
+## Source
+
+- **Legacy Code**: `OLD/` - .NET Framework 4.8 (read-only reference)
+- **New Code**: `NEW/` - .NET 10 solution (build target)
+
+## System Purpose
+
+A manufacturing/ERP search tool that:
+- Caches data from JDE (Oracle) and CMS (Sybase) into SQL Server
+- Allows complex searches across work orders, lots, items, operators, and work centers
+- Processes searches asynchronously and exports results to Excel
+- Provides real-time status updates via SignalR
+
+## Migration Goals
+
+- Single .NET 10 service (combines web app + worker service)
+- Blazor WebAssembly UI with Radzen components (replaces ASP.NET MVC + Kendo)
+- Modern ASP.NET Core SignalR
+- Interface-based authentication (LDAP in prod, fake auth in dev)
+- Interface-based data sources (Oracle in prod, file-based in dev)
+- DbUp for database schema management
+
+## Constraints
+
+- Preserve existing query logic and data models
+- Maintain compatibility with JDE/CMS/SQL Server data sources
+- Keep search criteria and Excel export formats consistent
+- No FluentAssertions (paid) - use Shouldly for tests
+
+## Spec Organization
+
+Specifications are organized by functional area:
+
+| Spec | Purpose | Legacy Source |
+|------|---------|---------------|
+| domain-models | Entity definitions | DataModel/Models/*.cs |
+| database-schema | SQL Server tables for DbUp | Database/*.sql |
+| data-access | JDE/CMS/SQL repositories | DataModel/Process/*.cs |
+| data-sync | Cache refresh scheduling | WorkerService/Process/UpdateProcessor*.cs |
+| search-processing | Criteria and query building | WorkerService/Models/Reporting/*.cs |
+| excel-export | Result formatting | WorkerService/Process/ExcelWriter.cs |
+| web-api-auth | API endpoints and authentication | WebInterface/Controllers/*.cs |
+
+## Execution Plan
+
+See `PLANS/legacy-spec-capture-plan.md` for:
+- Session-by-session workflow
+- Detailed checklists per spec
+- Codex MCP review process
+
+## Architecture Reference
+
+See `DOCUMENTATION/Architecture/` for:
+- Solution structure
+- Component dependencies
+- Interface patterns (data sources, authentication)
+- Database migration approach (DbUp)