Add license compatibility checker and refactor tree structure

.github/workflows/ci.yml

@@ -0,0 +1,61 @@
+name: CI
+
+on:
+  pull_request:
+    branches: [ main ]
+  push:
+    branches: [ main ]
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    name: Test on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+
+    permissions:
+      contents: read
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+
+    - name: Setup Zig
+      uses: goto-bus-stop/setup-zig@v2
+      with:
+        version: 0.15.2
+
+    - name: Run tests
+      run: zig build test
+
+    - name: Build project
+      run: zig build
+
+    - name: Upload artifact
+      uses: actions/upload-artifact@v4
+      with:
+        name: repolicense-${{ matrix.os }}
+        path: zig-out/bin/repolicense*
+
+  fmt-check:
+    name: Format Check
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: read
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+
+    - name: Setup Zig
+      uses: goto-bus-stop/setup-zig@v2
+      with:
+        version: 0.15.2
+
+    - name: Check formatting
+      run: zig fmt --check src/

COMPARISON.md

@@ -17,6 +17,7 @@ This CLI tool (`repolicense-cli`) is a command-line implementation of the web-ba
 | Mermaid Diagram Export | ✅ Copy to clipboard | ❌ Not implemented |
 | Download Tree | ✅ JSON download | ❌ Not implemented |
 | Visual Design | ✅ Modern UI with Shoelace | ✅ Clean text output |
+| License Compatibility Checker | ❌ Not implemented | ✅ New feature for checking compatible licenses when forking/combining projects |
 | Platform | 🌐 Browser-based | 💻 Native CLI |
 
 ## Architecture Differences

CONTRIBUTING.md

@@ -10,7 +10,7 @@ Thank you for your interest in contributing to repolicense-cli!
 
 ## Prerequisites
 
-- Zig 0.13.0 or later: [Download Zig](https://ziglang.org/download/)
+- Zig 0.15.2 or later: [Download Zig](https://ziglang.org/download/)
 
 ## Building
 
@@ -27,15 +27,15 @@ zig build test
 ## Code Style
 
 - Follow Zig standard library conventions
-- Use 4 spaces for indentation
+- Use 2 spaces for indentation
 - Keep functions focused and concise
 - Add comments for complex logic
 
 ## Adding New Licenses
 
 To add a new license to the decision tree:
 
-1. Open `src/main.zig`
+1. Open `src/tree.zig`
 2. Add a new `Node` constant in the `buildDecisionTree()` function
 3. Update the tree structure to include your new license
 4. Update the README with the new license information