docs: refresh README and add CI workflow

Author: Code-311

.github/workflows/ci.yml

@@ -0,0 +1,28 @@
+name: ci
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+
+jobs:
+  build-and-test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup .NET SDK
+        uses: actions/setup-dotnet@v4
+        with:
+          global-json-file: global.json
+
+      - name: Restore
+        run: dotnet restore Code311.sln
+
+      - name: Build
+        run: dotnet build Code311.sln --configuration Release --no-restore
+
+      - name: Test
+        run: dotnet test Code311.sln --configuration Release --no-build --verbosity normal

README.md

@@ -1,5 +1,91 @@
 # Code311
 
-Code311 is a modular, design-system-neutral UI framework ecosystem for ASP.NET Core (.NET 10).
+Code311 is a modular, design-system-neutral UI framework ecosystem for ASP.NET Core (.NET 10), with a Tabler-backed implementation and an official hybrid MVC + Razor demo host.
 
-This repository currently contains Phase 0 governance scaffolding and Phase 1 abstraction contracts.
+## Repository status
+
+This repository now includes:
+
+- **Foundation and governance**: solution layout, SDK pinning, centralized package versions, analyzer/nullability/doc enforcement.
+- **Framework-neutral contracts and core orchestration**:
+  - `Code311.Ui.Abstractions`
+  - `Code311.Ui.Core`
+- **Tabler implementation packages**:
+  - `Code311.Tabler.Core`
+  - `Code311.Tabler.Components`
+  - `Code311.Tabler.Dashboard`
+  - `Code311.Tabler.Widgets.DataTables`
+  - `Code311.Tabler.Widgets.Calendar`
+  - `Code311.Tabler.Widgets.Charts`
+  - `Code311.Tabler.Mvc`
+  - `Code311.Tabler.Razor`
+- **Infrastructure packages**:
+  - `Code311.Persistence.EFCore`
+  - `Code311.Licensing`
+- **Hybrid demo/integration portal**:
+  - `Code311.Host`
+
+## High-level architecture
+
+Code311 is intentionally layered:
+
+1. **Abstractions layer** (`Ui.Abstractions`) defines semantics/contracts with no design-system coupling.
+2. **Core layer** (`Ui.Core`) provides neutral orchestration services (theme/feedback/loading).
+3. **Design-system layer** (`Tabler.*`) maps abstractions into concrete UI behavior and rendering for MVC/Razor, dashboard, and widgets.
+4. **Cross-cutting infrastructure** (`Persistence.EFCore`, `Licensing`) remains independent from `Ui.Core` and Tabler component primitives.
+5. **Host layer** (`Code311.Host`) composes the ecosystem and demonstrates real integration flows without pushing host concerns down into framework packages.
+
+## Run the host demo (`Code311.Host`)
+
+> Prerequisites
+>
+> - .NET SDK 10 (preview)
+
+From repository root:
+
+```bash
+dotnet restore Code311.sln
+dotnet build Code311.sln
+dotnet run --project src/Code311.Host/Code311.Host.csproj
+```
+
+Default host behavior:
+
+- Uses **SQLite** demo persistence at `src/Code311.Host/App_Data/code311-host-demo.db`.
+- Runs explicit startup licensing validation (demo in-memory license configured in host startup).
+- Hosts both MVC and Razor Pages routes.
+
+## Key demo sections/routes
+
+Base URL assumes local launch profile default (`https://localhost:5001` or similar):
+
+- Home: `/`
+- Components:
+  - Forms: `/ComponentsDemo/Forms`
+  - Navigation: `/ComponentsDemo/Navigation`
+  - Layout: `/ComponentsDemo/Layout`
+  - Feedback: `/ComponentsDemo/Feedback`
+  - Data: `/ComponentsDemo/Data`
+  - Media: `/ComponentsDemo/Media`
+- Dashboard: `/Dashboard`
+- Widgets:
+  - DataTables: `/Widgets/DataTables`
+  - Calendar: `/Widgets/Calendar`
+  - Charts: `/Widgets/Charts`
+- Preferences / Theme: `/Preferences`
+- Licensing Diagnostics (Razor Page): `/Diagnostics/Licensing`
+- Architecture / About: `/Architecture/About`
+
+## Test and validation
+
+Run the full test matrix:
+
+```bash
+dotnet test Code311.sln
+```
+
+## Repository layout
+
+- `src/` — product/framework/host packages
+- `tests/` — unit and integration test projects
+- `docs/` — ADRs and architecture proposal