Adds reverse engineering docs and adds new aidlc feature for front-end development

aidlc-docs/_shared/reverse-engineering/component-inventory.md

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+# Component Inventory
+
+## Application Packages
+- `SlpModularCms.Api` — Web API host; bootstraps application, registers modules, exposes HTTP endpoints
+- `SlpModularCms.Modules.Identity` — Identity module: authentication, setup, user invitation controllers
+- `SlpModularCms.Modules.Availability` — Availability module: system status tracking controllers and services
+
+## Shared Packages
+- `SlpModularCms.Core` — Core domain: entities, DbContext, services, module interface, migrations
+
+## Test Packages
+- `SlpModularCms.Core.Tests` — Unit tests for Core layer (exceptions, identity services)
+- `SlpModularCms.Modules.Availability.Tests` — Unit tests for Availability module
+
+## Frontend (To Be Built)
+- `SlpModularCms.Frontend` — React SPA; admin panel for CMS management
+
+## Total Count
+- **Total Packages**: 6 (5 existing .NET + 1 new frontend)
+- **Application**: 3 (Api, Modules.Identity, Modules.Availability)
+- **Shared**: 1 (Core)
+- **Test**: 2 (Core.Tests, Modules.Availability.Tests)
+- **Frontend**: 1 (to be built)