ci: replace SourceKnight with native GitHub Actions workflow

.github/copilot-instructions.md

@@ -45,9 +45,9 @@ addons/sourcemod/
 - Git for version control
 
 ### Build System
-- **CI/CD**: GitHub Actions (`.github/workflows/build.yml`)
-- **Dependency Management**: sourceknight.yaml
-- **Compilation**: `spcomp VIP_Core.sp -E -o ../plugins/VIP_Core.smx -i./include`
+- **CI/CD**: GitHub Actions (`.github/workflows/ci.yml`)
+- **Dependency Management**: none (no external SourcePawn include dependencies beyond SourceMod itself)
+- **Compilation**: `spcomp -i include -o ../plugins/VIP_Core.smx VIP_Core.sp`
 
 ### Local Development Setup
 ```bash

.github/workflows/ci.yml

@@ -0,0 +1,98 @@
+name: CI
+
+on: [push, pull_request, workflow_dispatch]
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+
+      - name: Setup SourcePawn compiler
+        uses: rumblefrog/setup-sp@v1.3.1
+        with:
+          version: "1.12.x"
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build sourcemod plugin
+        working-directory: addons/sourcemod/scripting
+        run: |
+          set -euo pipefail
+          mkdir -p ../plugins
+          spcomp -i include -o ../plugins/VIP_Core.smx VIP_Core.sp
+
+      - name: Create package
+        run: |
+          set -euo pipefail
+          mkdir -p /tmp/package/addons/sourcemod/plugins
+          cp addons/sourcemod/plugins/*.smx /tmp/package/addons/sourcemod/plugins/
+          cp -R addons/sourcemod/translations /tmp/package/addons/sourcemod/
+          cp -R addons/sourcemod/data /tmp/package/addons/sourcemod/
+
+      - name: Upload build archive for test runners
+        uses: actions/upload-artifact@v7
+        with:
+          name: ${{ runner.os }}
+          path: /tmp/package
+
+  tag:
+    name: Tag
+    needs: build
+    if: github.ref == 'refs/heads/master' || github.ref == 'refs/heads/main'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+
+      - name: Delete existing "latest" release and tag
+        run: |
+          set -euo pipefail
+          gh release delete latest --cleanup-tag --yes || true
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - uses: rickstaa/action-create-tag@v1
+        with:
+          tag: latest
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+
+  release:
+    name: Release
+    needs: [build, tag]
+    if: |
+      always() &&
+      needs.build.result == 'success' &&
+      (needs.tag.result == 'success' || needs.tag.result == 'skipped') &&
+      (startsWith(github.ref, 'refs/tags/') || github.ref == 'refs/heads/master' || github.ref == 'refs/heads/main')
+    runs-on: ubuntu-latest
+    steps:
+      - name: Download artifacts
+        uses: actions/download-artifact@v8
+        with:
+          name: ${{ runner.os }}
+          path: artifacts
+
+      - name: Versioning
+        run: |
+          set -euo pipefail
+          version="latest"
+          if [[ "${{ github.ref_type }}" == "tag" ]]; then
+            version="${GITHUB_REF_NAME}"
+          fi
+          echo "RELEASE_VERSION=$version" >> "$GITHUB_ENV"
+
+      - name: Package
+        run: |
+          set -euo pipefail
+          cd artifacts
+          tar -czf "../${{ github.event.repository.name }}-${{ env.RELEASE_VERSION }}.tar.gz" .
+          cd ..
+
+      - name: Release
+        uses: svenstaro/upload-release-action@v2
+        with:
+          repo_token: ${{ secrets.GITHUB_TOKEN }}
+          file: "*.tar.gz"
+          tag: ${{ env.RELEASE_VERSION }}
+          file_glob: true
+          overwrite: true

.gitignore

@@ -1,4 +1,3 @@
 .vscode/
 *.smx
-.sourceknight
 plugins/