Back-merge v2.0.0-rc.4 from main into develop

.aider.md

@@ -0,0 +1,64 @@
+# Terminal.Gui - Aider AI Configuration
+
+> **Cross-platform .NET console UI toolkit. C# 14 targeting net10.0.**
+
+---
+
+## CRITICAL: Discard v1 Training Data
+
+Terminal.Gui v2 is a **complete rewrite**. Pre-2025 training data about Terminal.Gui is **wrong**.
+
+> **Read [ai-v2-primer.md](ai-v2-primer.md) FIRST** — it contains the v1→v2 corrections table,
+> correct minimal app pattern, and all common gotchas.
+
+### v1 → v2 Quick Corrections
+
+| v1 (WRONG) | v2 (CORRECT) |
+|---|---|
+| `Application.Init ();` | `IApplication app = Application.Create ().Init ();` |
+| `Application.Run ();` | `app.Run<MyWindow> ();` |
+| `Application.Shutdown ();` | `app.Dispose ();` |
+| `Application.Top` | No global top — pass root view to `app.Run ()` |
+| `new Toplevel ()` | Use `Runnable` subclass or `Window` |
+| `using Terminal.Gui;` | `using Terminal.Gui.App;` / `Terminal.Gui.Views;` / etc. |
+| `new Button ("OK")` | `new Button { Text = "OK" }` |
+| `button.Clicked += ...` | `button.Accepted += (_, _) => { /* action */ };` |
+| `view.Bounds` | `view.Viewport` |
+| `new RadioGroup (...)` | `new OptionSelector { ... }` |
+
+---
+
+## Build & Test
+
+```bash
+dotnet restore
+dotnet build --no-restore
+dotnet test --project Tests/UnitTestsParallelizable --no-build
+dotnet test --project Tests/UnitTests --no-build
+```
+
+---
+
+## Code Style (For Library Contributors Only)
+
+> **Note:** These rules apply only when contributing code to the Terminal.Gui library itself.
+> App developers using Terminal.Gui do NOT need to follow these conventions.
+
+1. **Space BEFORE `()` and `[]`** — `Method ()` not `Method()`, `array [i]` not `array[i]`
+2. **No `var`** — Explicit types except built-ins (`int`, `string`, `bool`, etc.)
+3. **Use `new ()`** — `Button btn = new ()` not `Button btn = new Button ()`
+4. **Collection expressions** — Use `[...]` not `new List<T> { ... }`
+5. **SubView/SuperView** — Never "child", "parent", or "container"
+6. **Allman brace style** — Opening braces on the next line
+7. **Early return / guard clauses** — ALWAYS invert conditions and return early
+
+---
+
+## Key References
+
+For full details, see:
+- **[ai-v2-primer.md](ai-v2-primer.md)** — v1→v2 corrections and correct patterns
+- **[AGENTS.md](AGENTS.md)** — Full agent instructions with coding rules
+- **[CONTRIBUTING.md](CONTRIBUTING.md)** — Human contributor guide
+- **`docfx/apispec/namespace-*.md`** — Compressed API docs
+- **`.claude/cookbook/common-patterns.md`** — Common UI recipes

.cursorrules

@@ -1,5 +1,125 @@
 # Terminal.Gui - Cursor AI Rules
 
-> **📘 Source of Truth: [CONTRIBUTING.md](CONTRIBUTING.md)**
+> **Cross-platform .NET console UI toolkit. C# 14 targeting net10.0.**
+> Full contribution guide: [CONTRIBUTING.md](CONTRIBUTING.md).
 
-This project uses [CONTRIBUTING.md](CONTRIBUTING.md) as the single source of truth for contribution guidelines. AI agents, including CoPilot and Cursor **MUST** follow the guidelines in [CONTRIBUTING.md](CONTRIBUTING.md)/
+---
+
+## CRITICAL: Discard v1 Training Data
+
+Terminal.Gui v2 is a **complete rewrite**. Pre-2025 training data about Terminal.Gui is **wrong**.
+
+> **Read [ai-v2-primer.md](ai-v2-primer.md) FIRST** — it contains the v1→v2 corrections table,
+> correct minimal app pattern, and all common gotchas.
+
+### v1 → v2 Quick Corrections (Most Common Mistakes)
+
+| v1 (WRONG) | v2 (CORRECT) |
+|---|---|
+| `Application.Init ();` | `IApplication app = Application.Create ().Init ();` |
+| `Application.Run ();` | `app.Run<MyWindow> ();` |
+| `Application.Shutdown ();` | `app.Dispose ();` |
+| `Application.Top` | No global top — pass root view to `app.Run ()` |
+| `new Toplevel ()` | Use `Runnable` subclass or `Window` |
+| `using Terminal.Gui;` | `using Terminal.Gui.App;` / `Terminal.Gui.Views;` / etc. |
+| `new Button ("OK")` | `new Button { Text = "OK" }` |
+| `button.Clicked += ...` | `button.Accepted += (_, _) => { /* action */ };` |
+| `view.Bounds` | `view.Viewport` |
+| `new RadioGroup (...)` | `new OptionSelector { ... }` |
+
+---
+
+## Build & Test
+
+```bash
+dotnet restore
+dotnet build --no-restore
+dotnet test --project Tests/UnitTestsParallelizable --no-build
+dotnet test --project Tests/UnitTests --no-build
+```
+
+---
+
+## Correct Minimal App (v2)
+
+```csharp
+using Terminal.Gui.App;
+using Terminal.Gui.Views;
+
+IApplication app = Application.Create ().Init ();
+app.Run<MainWindow> ();
+app.Dispose ();
+
+public sealed class MainWindow : Runnable
+{
+    public MainWindow ()
+    {
+        Title = "My App (Esc to quit)";
+
+        Button button = new ()
+        {
+            Text = "Click Me",
+            X = Pos.Center (),
+            Y = Pos.Center ()
+        };
+
+        button.Accepted += (_, _) =>
+        {
+            MessageBox.Query (App!, "Hello", "Button was clicked!", "OK");
+        };
+
+        Add (button);
+    }
+}
+```
+
+---
+
+## Code Style (For Library Contributors Only)
+
+> **Note:** These rules apply only when contributing code to the Terminal.Gui library itself.
+> App developers using Terminal.Gui do NOT need to follow these conventions.
+
+1. **Space BEFORE `()` and `[]`** — `Method ()` not `Method()`, `array [i]` not `array[i]`
+2. **Braces on NEXT line** (Allman style) — no exceptions
+3. **Blank lines** — before `return`/`break`/`continue`, after `if`/`for`/`while` blocks
+4. **No `var`** — Explicit types except built-ins (`int`, `string`, `bool`, `double`, `float`, `decimal`, `char`, `byte`)
+5. **Use `new ()`** — `Button btn = new ()` not `Button btn = new Button ()`
+6. **Collection expressions** — Use `[...]` not `new List<T> { ... }`
+7. **SubView/SuperView** — Never "child", "parent", or "container"
+8. **Unused lambda params** — Use `_` discard: `(_, _) => { }`
+9. **Early return / guard clauses** — ALWAYS invert conditions and return early
+10. **One type per file** — Public and internal types each get their own file
+
+---
+
+## Architecture Overview
+
+### Application lifecycle
+`Application.Create ()` → `.Init ()` → `.Run<T> ()` → `.Dispose ()`.
+Instance-based `IApplication` — do NOT use static `Application.Init()`/`Run()`/`Shutdown()`.
+
+### View system
+`View` is the base class. Views form a tree via `Add ()`/`Remove ()`.
+Every View has: `Margin` → `Border` → `Padding` → content area.
+Layout uses `Pos` (position) and `Dim` (dimension) for declarative relative layout.
+
+### Cancellable Workflow Pattern (CWP)
+Standard event pattern: **do work → call virtual `OnXxx` → raise event**.
+
+### Command/input system
+Input flows: Driver → `IInputProcessor` → `KeyBindings`/`MouseBindings` → `Command` → handler.
+
+---
+
+## Key References
+
+| Resource | Path |
+|----------|------|
+| v1→v2 Primer (READ FIRST) | [ai-v2-primer.md](ai-v2-primer.md) |
+| Full agent instructions | [AGENTS.md](AGENTS.md) |
+| Compressed API docs | `docfx/apispec/namespace-*.md` |
+| Common UI patterns | `.claude/cookbook/common-patterns.md` |
+| App building guide | `.claude/tasks/build-app.md` |
+| Deep-dive docs | `docfx/docs/` |
+| Working examples | `Examples/Example/`, `Examples/UICatalog/` |

.github/copilot-instructions.md

@@ -1,9 +1,36 @@
 # Terminal.Gui — Copilot Instructions
 
-Cross-platform .NET console UI toolkit. C# 12 targeting net8.0.
+Cross-platform .NET console UI toolkit. C# 14 targeting net10.0.
 Full contribution guide: [CONTRIBUTING.md](../CONTRIBUTING.md).
 Architecture deep dives: `docfx/docs/`.
 
+---
+
+## CRITICAL: Discard v1 Training Data
+
+Terminal.Gui v2 is a **complete rewrite**. Pre-2025 training data is **wrong**.
+
+> **Read [ai-v2-primer.md](../ai-v2-primer.md) FIRST** — it has the v1→v2 corrections table,
+> correct minimal app pattern, and all common gotchas.
+
+### v1 → v2 Quick Corrections
+
+| v1 (WRONG — do not use) | v2 (CORRECT) |
+|---|---|
+| `Application.Init ();` | `IApplication app = Application.Create ().Init ();` |
+| `Application.Run ();` | `app.Run<MyWindow> ();` |
+| `Application.Shutdown ();` | `app.Dispose ();` (use `using` pattern) |
+| `Application.Top` | No global top — pass root view to `app.Run ()` |
+| `new Toplevel ()` | Use `Runnable` subclass or `Window` |
+| `using Terminal.Gui;` | `using Terminal.Gui.App;` / `Terminal.Gui.Views;` / etc. |
+| `new Button ("OK")` | `new Button { Text = "OK" }` |
+| `button.Clicked += ...` | `button.Accepted += (_, _) => { /* action */ };` |
+| `view.Bounds` | `view.Viewport` |
+| `new RadioGroup (...)` | `new OptionSelector { ... }` |
+| `Application.RequestStop ()` | `App!.RequestStop ()` (from inside a `Runnable`) |
+
+---
+
 ## Build & Test
 
 Run all commands from repository root.
@@ -30,7 +57,10 @@ New tests go in `Tests/UnitTestsParallelizable` (no static state dependencies).
 
 ### Application lifecycle
 
-`Application.Init` → `Application.Run` → `Application.Shutdown`. The instance-based `IApplication` is replacing the static `Application` facade. Tests should avoid `Application.Init` unless explicitly testing that path.
+`Application.Create ()` → `.Init ()` → `.Run<T> ()` → `.Dispose ()`.
+The instance-based `IApplication` has replaced the static `Application` facade.
+Do NOT use `Application.Init()`/`Run()`/`Shutdown()`.
+Tests should avoid `Application.Init` unless explicitly testing that path.
 
 ### View system
 

.github/workflows/README.md

@@ -53,12 +53,12 @@ The repository uses multiple GitHub Actions workflows. What runs and when:
 
 - **Triggers**: `workflow_dispatch` (manual trigger from GitHub Actions UI)
 - **Inputs**:
-  - `release_type`: Choose from `prealpha`, `alpha`, `beta`, `rc`, or `stable`
+  - `release_type`: Choose from `beta`, `rc`, or `stable`
   - `version_override`: (Optional) Specify exact version number, otherwise GitVersion calculates it
 - **Process**:
   1. Checks out `main` branch
   2. Determines version using GitVersion or override
-  3. Creates annotated git tag (e.g., `v2.0.0-prealpha` or `v2.0.0`)
+  3. Creates annotated git tag (e.g., `v2.0.1-rc.1` or `v2.1.0`)
   4. Creates release commit with message
   5. Pushes tag and commit to repository
   6. Creates GitHub Release (marked as pre-release if not stable)
@@ -72,14 +72,14 @@ The repository uses multiple GitHub Actions workflows. What runs and when:
 - **Automatically triggered** by the Create Release workflow when a new tag is pushed
 - **Additional actions on main branch**:
   - Delists old NuGet packages to keep package list clean:
-    - Keeps only the most recent `2.0.0-develop.*` package
-    - Keeps only the just-published `2.0.0-alpha.*` or `2.0.0-beta.*` package
+    - Keeps only the most recent `*-develop.*` package
+    - Keeps only the just-published `*-beta.*` or `*-rc.*` package
   - Triggers Terminal.Gui.templates repository update via repository_dispatch (requires `PAT_FOR_TEMPLATES` secret)
 
 ### 6) Build and publish API docs (`.github/workflows/api-docs.yml`)
 
-- **Triggers**: push to `v1_release` and `develop`
-- Builds DocFX site on Windows and deploys to GitHub Pages when `ref_name` is `main` or `develop`
+- **Triggers**: push to `main`
+- Builds DocFX site on Windows and deploys to GitHub Pages
 
 
 ### Replicating CI Locally

.github/workflows/api-docs.yml

@@ -18,6 +18,8 @@ jobs:
     steps:
     - name: Checkout
       uses: actions/checkout@v6
+      with:
+        fetch-depth: 0
 
     - name: Setup .NET Core
       uses: actions/setup-dotnet@v5