Feat: add Compose service images

[smithaldon1]

Summary

• Adds Docker build definitions for the shared Python runtime and the Next.js Workbench.
• Updates the FIP Compose stack to run postgres, api, web, connector-worker, and sentinel-worker, with practical health checks and explicit runtime environment variables.
• Removes the in-repo opcua-simulator from the default FIP Compose runtime while keeping Demo-Factory as the separate local protocol source.

Closes #236

Test Evidence

• docker compose -f infra/docker/docker-compose.yml config passed.
• .venv/bin/python -m pytest services/simulator/tests/test_docker_compose_runtime_docs.py services/simulator/tests/test_opcua_demo_server.py services/ingestion/tests/test_opcua_demo_worker.py passed: 17 passed.
• make lint passed.
• make typecheck passed.
• make test passed: 265 passed, 4 skipped.
• cd apps/web && npm test passed: 18 passed.
• cd apps/web && npm run lint passed.
• cd apps/web && npm run typecheck passed.
• cd apps/web && npm run build passed.
• docker compose -f infra/docker/docker-compose.yml up --build -d built and started the runtime stack.
• curl -s http://localhost:8000/health returned status ok with storage_backend postgres.
• docker compose -f infra/docker/docker-compose.yml down stopped the validation stack.

Docs Impact

• Updated README runtime commands, Compose docs, troubleshooting notes, .env.example, and docs/LEARNING_LOG.md.

Follow-Up Work

• Feature: Add connector worker runtime #238 should replace the temporary scheduled connector command with the full read-only connector worker runtime.
• Feature: Add scheduled Process Sentinel worker #239 should harden scheduled Process Sentinel worker behavior.
• Task: Add Compose smoke test #241 should add the full Compose smoke path across API health, ingestion, Sentinel output, and Workbench rendering.

[smithaldon1]

Reviewed and approved for merge