Refactor LLM verification and update dependencies

- Removed OpenAI and related dependencies from package.json and package-lock.json.
- Simplified LLM verification logic to focus on OpenCode server.
- Updated tests to reflect changes in LLM provider handling.
- Added CI and CD workflows for automated processes in Gitea.

.gitea/ workflows/ci.yaml

@@ -0,0 +1,17 @@
+name: CI
+on:
+  pull_request:
+    branches-ignore:
+    - master
+    types: [opened, synchronize]
+permissions:
+  contents: write
+  pull-requests: write
+  issues: write
+jobs:
+  ai-code-review:
+    name: Code Review 
+    runs-on: ubuntu
+    steps:
+    - name: Code Review
+      uses: https://gitea.jsc.idv.tw/composite-actions/opencode-code-review@${{ vars.ACTION_AI_CODE_REVIEW_VERSION }}