Implement more tests

- Add comprehensive unit tests and CI pipeline

- Introduced unit tests for `agent-wrapper`, `cli`, and `generate-template` modules covering key functionality like structure, integration, argument parsing, filename handling, and error scenarios.

- Implemented a new CI workflow with Bun and Rust testing.

.github/workflows/ci.yml

@@ -0,0 +1,67 @@
+name: CI
+
+on:
+  push:
+    branches: [ main, master ]
+  pull_request:
+    branches: [ main, master ]
+
+jobs:
+  test-typescript:
+    runs-on: ubuntu-latest
+    name: Test TypeScript with Bun
+    
+    steps:
+    - uses: actions/checkout@v4
+    
+    - name: Setup Bun
+      uses: oven-sh/setup-bun@v1
+      with:
+        bun-version: latest
+    
+    - name: Install dependencies
+      run: bun install
+    
+    - name: Run TypeScript tests
+      run: bun test
+
+  test-rust:
+    runs-on: ubuntu-latest
+    name: Test Rust
+    
+    steps:
+    - uses: actions/checkout@v4
+    
+    - name: Setup Rust
+      uses: actions-rs/toolchain@v1
+      with:
+        toolchain: stable
+        override: true
+        components: rustfmt, clippy
+    
+    - name: Cache cargo registry
+      uses: actions/cache@v3
+      with:
+        path: ~/.cargo/registry
+        key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
+    
+    - name: Cache cargo index
+      uses: actions/cache@v3
+      with:
+        path: ~/.cargo/git
+        key: ${{ runner.os }}-cargo-index-${{ hashFiles('**/Cargo.lock') }}
+    
+    - name: Cache cargo build
+      uses: actions/cache@v3
+      with:
+        path: target
+        key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('**/Cargo.lock') }}
+    
+    - name: Run Rust tests
+      run: cargo test
+    
+    - name: Run Rust clippy
+      run: cargo clippy -- -D warnings
+    
+    - name: Check Rust formatting
+      run: cargo fmt -- --check