fix: Update GitHub and Gitea workflows for Python 3.13 and MongoDB

Changes to GitHub Actions (.github/workflows/build-deploy.yml):
- Update PYTHON_VERSION from 3.11 to 3.13

Changes to Gitea Actions (.gitea/workflows/ci.yml):
- Update PYTHON_VERSION from 3.10 to 3.13
- Update POETRY_VERSION from 1.7.1 to 1.8.0
- Replace PostgreSQL and Redis services with MongoDB
- Update service health check for MongoDB (mongosh)
- Update test environment variables for MongoDB
- Remove DATABASE_URL and REDIS_URL
- Add MONGODB_URL and MONGODB_DATABASE

This ensures all CI/CD pipelines are aligned with:
- Python 3.13 requirement in pyproject.toml
- MongoDB migration from PostgreSQL

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

.gitea/workflows/ci.yml

@@ -11,8 +11,8 @@ on:
     - cron: '0 */6 * * *'  # Every 6 hours for docs generation
 
 env:
-  POETRY_VERSION: 1.7.1
-  PYTHON_VERSION: "3.10"
+  POETRY_VERSION: 1.8.0
+  PYTHON_VERSION: "3.13"
   REGISTRY: ${{ vars.PACKAGES_REGISTRY }}
   IMAGE_NAME: ${{ gitea.repository }}
 
@@ -57,28 +57,14 @@ jobs:
     name: Run Tests
     runs-on: ubuntu-latest
     needs: lint
-    
+
     services:
-      redis:
-        image: redis:7-alpine
+      mongodb:
+        image: mongo:7-jammy
         ports:
-          - 6379:6379
+          - 27017:27017
         options: >-
-          --health-cmd "redis-cli ping"
-          --health-interval 10s
-          --health-timeout 5s
-          --health-retries 5
-      
-      postgres:
-        image: postgres:15-alpine
-        env:
-          POSTGRES_DB: testdb
-          POSTGRES_USER: test
-          POSTGRES_PASSWORD: test
-        ports:
-          - 5432:5432
-        options: >-
-          --health-cmd pg_isready
+          --health-cmd "mongosh --eval 'db.adminCommand(\"ping\")'"
           --health-interval 10s
           --health-timeout 5s
           --health-retries 5
@@ -105,8 +91,8 @@ jobs:
       
       - name: Run unit tests
         env:
-          DATABASE_URL: postgresql://test:test@localhost:5432/testdb
-          REDIS_URL: redis://localhost:6379/0
+          MONGODB_URL: mongodb://localhost:27017
+          MONGODB_DATABASE: testdb
         run: |
           poetry run pytest tests/unit -v --cov --cov-report=xml --cov-report=html
         continue-on-error: true

.github/workflows/build-deploy.yml

@@ -26,7 +26,7 @@ on:
 env:
   DOCKER_REGISTRY: ghcr.io
   IMAGE_NAME: ${{ github.repository }}/docs-server
-  PYTHON_VERSION: '3.11'
+  PYTHON_VERSION: '3.13'
 
 jobs:
   # Job 1: Linting e validazione