cleanup: remove unused workflow — Actions disabled, CI runs on Gitea

.github/workflows/core-ci.yml

@@ -1,71 +0,0 @@
-name: Core CI
-
-on:
-  pull_request:
-    paths:
-      - 'backend/app/**'
-      - 'backend/requirements.txt'
-      - 'backend/Dockerfile'
-      - 'backend/alembic/**'
-      - '!backend/app/routers/**'
-      - '!backend/tests/**'
-  push:
-    branches: [main, develop]
-    paths:
-      - 'backend/app/**'
-      - 'backend/requirements.txt'
-      - '!backend/app/routers/**'
-      - '!backend/tests/**'
-
-jobs:
-  core-checks:
-    name: Core Module Checks
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v3
-
-      - name: Set up Python
-        uses: actions/setup-python@v4
-        with:
-          python-version: '3.11'
-          cache: 'pip'
-
-      - name: Install dependencies
-        run: |
-          cd backend
-          pip install -r requirements.txt
-          pip install flake8 black mypy
-
-      - name: Check Python formatting (Black)
-        run: |
-          cd backend
-          black --check app/
-
-      - name: Lint with flake8
-        run: |
-          cd backend
-          flake8 app/ --count --select=E9,F63,F7,F82 --show-source --statistics
-          flake8 app/ --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
-
-      - name: Type check with mypy
-        run: |
-          cd backend
-          mypy app/ --ignore-missing-imports || true
-
-      - name: Validate database models
-        run: |
-          cd backend
-          python -c "from app.database import Base; from app.models import *; print('Models validated')"
-
-      - name: Check for security issues
-        run: |
-          pip install bandit safety
-          cd backend
-          bandit -r app/ -ll
-          safety check --file requirements.txt || true
-
-      - name: Summary
-        run: |
-          echo "✅ Core CI checks completed"