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>

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2024-2025 Leo Miranda
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.