feat: Sprint 10 - Architecture docs, CI/CD, operational scripts

Phase 1 - Architecture Documentation:
- Add Architecture section with Mermaid flowchart to README
- Create docs/DATABASE_SCHEMA.md with full ERD

Phase 2 - CI/CD:
- Add CI badge to README
- Create .gitea/workflows/ci.yml for linting and tests
- Create .gitea/workflows/deploy-staging.yml
- Create .gitea/workflows/deploy-production.yml

Phase 3 - Operational Scripts:
- Create scripts/logs.sh for docker compose log following
- Create scripts/run-detached.sh with health check loop
- Create scripts/etl/toronto.sh for Toronto data pipeline
- Add Makefile targets: logs, run-detached, etl-toronto

Phase 4 - Runbooks:
- Create docs/runbooks/adding-dashboard.md
- Create docs/runbooks/deployment.md

Phase 5 - Hygiene:
- Create MIT LICENSE file

Phase 6 - Production:
- Add live demo link to README (leodata.science)

Closes #78, #79, #80, #81, #82, #83, #84, #85, #86, #87, #88, #89, #91

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.gitea/workflows/deploy-production.yml

@@ -0,0 +1,44 @@
+name: Deploy to Production
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Deploy to Production Server
+        uses: appleboy/ssh-action@v1.0.3
+        with:
+          host: ${{ secrets.PROD_HOST }}
+          username: ${{ secrets.PROD_USER }}
+          key: ${{ secrets.PROD_SSH_KEY }}
+          script: |
+            set -euo pipefail
+
+            cd ~/apps/personal-portfolio
+
+            echo "Pulling latest changes..."
+            git fetch origin main
+            git reset --hard origin/main
+
+            echo "Activating virtual environment..."
+            source .venv/bin/activate
+
+            echo "Installing dependencies..."
+            pip install -r requirements.txt --quiet
+
+            echo "Running dbt models..."
+            cd dbt && dbt run --profiles-dir . && cd ..
+
+            echo "Restarting application..."
+            docker compose down
+            docker compose up -d
+
+            echo "Waiting for health check..."
+            sleep 10
+            curl -f http://localhost:8050/health || exit 1
+
+            echo "Production deployment complete!"