Add LLM configuration options and update deployment workflow

- Introduced new API keys for Anthropic and Google in .env.example and settings.py
- Updated llm.py to retrieve API keys directly from settings
- Modified deploy.yaml to streamline code checkout and improve deployment process

.gitea/workflows/deploy.yaml

@@ -3,10 +3,8 @@ run-name: ${{ gitea.ref_name }} → Docker LXC
 
 on:
   push:
-    branches: [main]
-    tags: ['v*']
-  pull_request:
-    branches: [main]
+    tags:
+      - 'v*'
 
 jobs:
   # ── 1. Run tests in an isolated Python container ──────────────────
@@ -16,8 +14,15 @@ jobs:
       image: python:3.12-slim
 
     steps:
+      - name: Install git
+        run: apt-get update && apt-get install -y --no-install-recommends git
+
       - name: Checkout Code
-        uses: actions/checkout@v4
+        run: |
+          git clone --depth 1 --branch "${GITHUB_REF_NAME}" \
+            "http://10.0.0.119:3000/${GITHUB_REPOSITORY}.git" . || \
+          git clone --depth 1 "http://10.0.0.119:3000/${GITHUB_REPOSITORY}.git" . && \
+          git checkout "${GITHUB_SHA}"
 
       - name: Install Dependencies
         run: pip install --no-cache-dir -r requirements.txt
@@ -36,15 +41,21 @@ jobs:
 
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v4
+        run: |
+          cd /tmp
+          rm -rf adiuva-api-deploy
+          git clone --depth 1 "http://10.0.0.119:3000/${GITHUB_REPOSITORY}.git" adiuva-api-deploy || \
+          git clone --depth 1 "http://10.0.0.119:3000/${GITHUB_REPOSITORY}.git" adiuva-api-deploy
+          cd adiuva-api-deploy && git checkout "${GITHUB_SHA}" 2>/dev/null || true
 
       - name: Sync to deploy directory
         run: |
           DEPLOY_DIR="/opt/adiuva-api"
+          SRC="/tmp/adiuva-api-deploy"
           mkdir -p "$DEPLOY_DIR"
 
           # Sync source, preserve .env and volumes
-          cp -rf app/ alembic/ alembic.ini Dockerfile docker-compose.yml requirements.txt "$DEPLOY_DIR/"
+          cp -rf "$SRC/app/" "$SRC/alembic/" "$SRC/alembic.ini" "$SRC/Dockerfile" "$SRC/docker-compose.yml" "$SRC/requirements.txt" "$DEPLOY_DIR/"
 
       - name: Build & restart services
         run: |