feat(extension): add Test Explorer integration and Helix harness

Author: govert

PROJECT_PLAN.md

@@ -317,6 +317,7 @@ The language server is organized into five distinct layers:
 - Performance tuning and indexing improvements (ongoing).
 - Document the exact Roslyn package versions used by the extension in README.md.
 - Inlay hints (deferred pending stable Roslyn APIs).
+- Review activation events for overly aggressive activation (decision + follow-up).
 - Multi-root workspace coverage (tests + UX).
 - Smarter MSBuild selection warnings for x64/arm64 mismatches (macOS/WSL guidance).
 - Workspace status surfacing (loaded project count, caps, and memory budget warnings).

docs/development.md

@@ -3,7 +3,7 @@
 **`VB.NET` Language Support - Developer Documentation**
 
 Version: 1.0
-Last Updated: 2026-01-21
+Last Updated: 2026-02-05
 
 ## Table of Contents
 
@@ -63,6 +63,8 @@ This policy is local to this repository and does not change machine-wide Git set
 - **Emacs** with eglot (current harness); lsp-mode optional for future coverage
   - Emacs: https://www.gnu.org/software/emacs/
   - lsp-mode: https://emacs-lsp.github.io/lsp-mode/
+- **Helix** (manual LSP smoke checks; no headless harness yet)
+  - Helix: https://helix-editor.com/
 
 ---
 
@@ -359,6 +361,20 @@ npm run bundle-debugger
 ./test-explore/clients/emacs/run-tests.ps1 -Suite vbnet
 ```
 
+### Helix Manual Smoke Check (stdio)
+
+Helix uses stdio for LSP. Use the project-local `languages.toml` template and the helper script:
+
+```powershell
+test-explore/clients/helix/run-helix.ps1
+```
+
+If `hx` is not on PATH, pass the path explicitly:
+
+```powershell
+test-explore/clients/helix/run-helix.ps1 -HelixExe C:\Tools\Helix\hx.exe -ServerExe C:\path\to\VbNet.LanguageServer.exe
+```
+
 ---
 
 ## WSL/Linux Test Notes
@@ -411,6 +427,7 @@ xvfb-run -a npm test
 ## Future Test-Explore Notes
 
 - Consider adding NeoVim coverage for `VB.NET` LSP + debugger integration (possibly with `neotest`), across all supported platforms.
+- Track Helix automation options; current coverage is manual only (stdio config under `test-explore/clients/helix`).
 
 ## 5. Debugging
 
@@ -832,7 +849,7 @@ dotnet test
 
 ---
 
-**Last Updated**: 2026-01-19
+**Last Updated**: 2026-02-05
 
 **Maintained by**: `VB.NET` Language Support Contributors
 

docs/features.md

@@ -3,14 +3,14 @@
 **`VB.NET` Language Support - LSP Features and Roadmap**
 
 Version: 2.6  
-Last Updated: 2026-01-20
+Last Updated: 2026-02-05
 
 ## 1. Overview
 
 This document provides a concise view of LSP features supported by `VB.NET` Language Support, their implementation status, and roadmap.
 
 **Current Phase**: Phase 3 (Advanced navigation complete; polish in progress)  
-**Test Coverage**: 150 tests passing
+**Test Coverage**: 156 language server tests + 7 extension manifest tests passing (latest recorded run: 2026-01-23)
 
 ## 2. Feature Status Legend
 
@@ -128,7 +128,13 @@ This document provides a concise view of LSP features supported by `VB.NET` Lang
 |---------|--------|-------|
 | netcoredbg integration | Implemented | Bundled netcoredbg (override via settings) |
 
-## 5. Roadmap (Next)
+## 5. VS Code UX Features
 
-Phase 3 focuses on test explorer integration and performance tuning. Inlay hints and code lens are deferred pending stable Roslyn public APIs.
+| Feature | Status | Notes |
+|---------|--------|-------|
+| Test Explorer integration | Implemented | Dotnet test runs for solution/project items (run profile only) |
+
+## 6. Roadmap (Next)
+
+Phase 3 focuses on performance tuning and release polish. Inlay hints and code lens are deferred pending stable Roslyn public APIs.