fix: add Gitea Actions CI workflow and fix logic bugs

- Created .gitea/workflows/ci.yml with lint, build, and test jobs
- Fixed scope extraction bug in analyzer.rs (src/main.rs now returns "src")
- Fixed renamed file path assignment in git.rs (correct old_path/new_path)

.gitea/workflows/ci.yml

@@ -0,0 +1,37 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install Rust
+        run: rustup default stable
+      - name: Check formatting
+        run: cargo fmt --check --all
+      - name: Clippy
+        run: cargo clippy --all -- -D warnings
+  build:
+    runs-on: ubuntu-latest
+    needs: lint
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install Rust
+        run: rustup default stable
+      - name: Build
+        run: cargo build --release
+  test:
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install Rust
+        run: rustup default stable
+      - name: Run tests
+        run: cargo test