feat: add initial LSP client extension

.github/workflows/build.yml

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+name: Build VS Code extension
+
+on:
+  workflow_call:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+  pull_request:
+    types:
+      - opened
+      - reopened
+      - synchronize
+
+jobs:
+  linting:
+    name: Reuse linting job
+    uses: ./.github/workflows/lint.yml
+
+  build:
+    needs: linting
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out source repository
+        uses: actions/checkout@v6
+      - uses: actions/setup-node@v6
+        with:
+          node-version: 24
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Install reqstool LSP
+        run: pipx install "reqstool[lsp]"
+
+      - name: Run headless test
+        run: npm run test-with-report
+
+      - name: Run UI tests
+        run: xvfb-run --auto-servernum npm run test:ui
+
+      - name: Build project
+        run: npm run build
+
+      - name: Upload Artifacts
+        uses: actions/upload-artifact@v7
+        with:
+          name: dist
+          path: "*.vsix"

.github/workflows/check-semantic-pr.yml

@@ -0,0 +1,10 @@
+name: Check Semantic PR
+on:
+  pull_request:
+    types: [opened, edited, synchronize, reopened]
+  pull_request_target:
+    types: [opened, edited, synchronize, reopened]
+
+jobs:
+  check:
+    uses: reqstool/.github/.github/workflows/check-semantic-pr.yml@main

.github/workflows/check_release.yml

@@ -0,0 +1,11 @@
+name: Lint
+on:
+  workflow_call:
+
+jobs:
+  check-release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check branch and tag
+        if: github.event_name == 'push' && !(github.ref == 'refs/heads/main' && startsWith(github.ref, 'refs/tags/v'))
+        run: exit 1

.github/workflows/lint.yml

@@ -0,0 +1,17 @@
+name: Lint
+on:
+  workflow_dispatch:
+  workflow_call:
+
+jobs:
+  linting:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out source repository
+        uses: actions/checkout@v6
+      - uses: actions/setup-node@v6
+        with:
+          node-version: 24
+      - run: |
+          npm ci
+          npm run lint

.github/workflows/publish_vscode_ext.yml

@@ -0,0 +1,36 @@
+name: Publish to Open VSX Registry and Visual Studio Marketplace
+
+on:
+  release:
+    types: [created]
+
+jobs:
+  check-release:
+    name: Reuse check release
+    uses: ./.github/workflows/check_release.yml
+
+  build:
+    name: Reuse build
+    uses: ./.github/workflows/build.yml
+
+  publish-vscode-extension:
+    needs:
+      - build
+      - check-release
+
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - uses: actions/setup-node@v6
+        with:
+          node-version: 24
+      - run: npm ci
+      - name: Publish to Open VSX Registry
+        uses: HaaLeo/publish-vscode-extension@v2
+        with:
+          pat: ${{ secrets.OPEN_VSX_TOKEN }}
+      - name: Publish to Visual Studio Marketplace
+        uses: HaaLeo/publish-vscode-extension@v2
+        with:
+          pat: ${{ secrets.VS_MARKETPLACE_TOKEN }}
+          registryUrl: https://marketplace.visualstudio.com

.gitignore

@@ -0,0 +1,122 @@
+# Created by https://www.toptal.com/developers/gitignore/api/node,visualstudiocode,intellij+all
+# Edit at https://www.toptal.com/developers/gitignore?templates=node,visualstudiocode,intellij+all
+
+### Intellij+all ###
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/**/usage.statistics.xml
+.idea/**/dictionaries
+.idea/**/shelf
+.idea/**/aws.xml
+.idea/**/contentModel.xml
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+.idea/**/dbnavigator.xml
+.idea/**/gradle.xml
+.idea/**/libraries
+cmake-build-*/
+.idea/**/mongoSettings.xml
+*.iws
+out/
+.idea_modules/
+atlassian-ide-plugin.xml
+.idea/replstate.xml
+.idea/sonarlint/
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+.idea/httpRequests
+.idea/caches/build_file_checksums.ser
+
+### Intellij+all Patch ###
+.idea/*
+
+!.idea/codeStyles
+!.idea/runConfigurations
+
+### Node ###
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+.pnpm-debug.log*
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+pids
+*.pid
+*.seed
+*.pid.lock
+lib-cov
+coverage
+*.lcov
+.nyc_output
+.grunt
+bower_components
+.lock-wscript
+build/Release
+node_modules/
+jspm_packages/
+web_modules/
+*.tsbuildinfo
+.npm
+.eslintcache
+.stylelintcache
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+.node_repl_history
+*.tgz
+.yarn-integrity
+.env
+.env.development.local
+.env.test.local
+.env.production.local
+.env.local
+.cache
+.parcel-cache
+.next
+out
+.nuxt
+dist
+.cache/
+.vuepress/dist
+.temp
+.docusaurus
+.serverless/
+.fusebox/
+.dynamodb/
+.tern-port
+.vscode-test
+.yarn/cache
+.yarn/unplugged
+.yarn/build-state.yml
+.yarn/install-state.gz
+.pnp.*
+
+### Node Patch ###
+.webpack/
+.svelte-kit
+
+### VisualStudioCode ###
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+!.vscode/*.code-snippets
+.history/
+*.vsix
+
+### VisualStudioCode Patch ###
+.history
+.ionide
+
+# Claude Code
+.claude/

.npmrc

@@ -0,0 +1 @@
+registry=https://registry.npmjs.org

.vscode-test.mjs

@@ -0,0 +1,9 @@
+import { defineConfig } from '@vscode/test-cli'
+
+export default defineConfig({
+    files: 'out/test/*.test.js',
+    launchArgs: ['--headless', '--disable-gpu'],
+    mocha: {
+        reporter: 'mocha-junit-reporter',
+    },
+})

.vscode/launch.json

@@ -0,0 +1,17 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Run Extension",
+            "type": "extensionHost",
+            "request": "launch",
+            "args": [
+                "--extensionDevelopmentPath=${workspaceFolder}"
+            ],
+            "outFiles": [
+                "${workspaceFolder}/out/**/*.js"
+            ],
+            "preLaunchTask": "${defaultBuildTask}"
+        }
+    ]
+}

.vscode/tasks.json

@@ -0,0 +1,18 @@
+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "type": "npm",
+            "script": "watch",
+            "problemMatcher": "$tsc-watch",
+            "isBackground": true,
+            "presentation": {
+                "reveal": "never"
+            },
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            }
+        }
+    ]
+}

.vscodeignore

@@ -0,0 +1,11 @@
+.vscode/**
+.vscode-test/**
+src/**
+.gitignore
+.yarnrc
+vsc-extension-quickstart.md
+**/tsconfig.json
+**/.eslintrc.json
+**/*.map
+**/*.ts
+**/.vscode-test.*

CHANGELOG.md

@@ -0,0 +1,9 @@
+# Change Log
+
+All notable changes to the reqstool extension will be documented in this file.
+
+Check [Keep a Changelog](http://keepachangelog.com/) for recommendations on how to structure this file.
+
+## [Unreleased]
+
+- Initial release with LSP client support