chore: add GitHub Actions release workflow, MIT license, and update gitignore

.github/workflows/release.yml

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+name: Release
+
+on:
+  push:
+    tags:
+      - 'v*' # 当推送标签形如 v1.0.0 时触发自动构建
+
+permissions:
+  contents: write
+
+jobs:
+  build:
+    name: Build & Release
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: '1.21'
+          cache: true
+
+      - name: Download Dependencies
+        run: go mod download
+
+      - name: Compile Cross-Platform Binaries
+        run: |
+          mkdir -p build_output
+          
+          echo "Building Windows amd64..."
+          GOOS=windows GOARCH=amd64 go build -ldflags="-s -w" -o build_output/smart-monitor_windows_amd64.exe ./cmd/smart-monitor
+          
+          echo "Building Windows arm64..."
+          GOOS=windows GOARCH=arm64 go build -ldflags="-s -w" -o build_output/smart-monitor_windows_arm64.exe ./cmd/smart-monitor
+          
+          echo "Building Linux amd64..."
+          GOOS=linux GOARCH=amd64 go build -ldflags="-s -w" -o build_output/smart-monitor_linux_amd64 ./cmd/smart-monitor
+          
+          echo "Building Linux arm64..."
+          GOOS=linux GOARCH=arm64 go build -ldflags="-s -w" -o build_output/smart-monitor_linux_arm64 ./cmd/smart-monitor
+
+      - name: Publish GitHub Release
+        uses: softprops/action-gh-release@v1
+        with:
+          files: build_output/*
+          draft: false
+          prerelease: false
+          generate_release_notes: true
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.gitignore

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+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output directory for cross-platform builds
+/bin/
+/build/
+smart-monitor
+smart-monitor.exe
+
+# Output of the go coverage tool
+*.out
+
+# IDE configs
+.idea/
+.vscode/
+
+# Local logs or configuration testing directories
+logs/
+*.log
+config.json

LICENSE

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+MIT License
+
+Copyright (c) 2026 UnbalancedCat
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.