feature/enhanced deploy

[vinulw]

Enhanced deployment: selectable model sets and deployment-time overrides

Reworks install.sh and the compose layout so a deployment chooses its model set and overrides paths, images and published ports without editing tracked files.

Model sets

• install.sh -m/--model-set <name> (default piwind, falling back to MODEL_SET in .env) resolves to docker-compose.models.<name>.yml and errors clearly if that file doesn't exist.
• model-registration and piwind-worker move out of docker-compose.yml into the per-model-set files, so the base stack no longer carries model-specific services. Adds docker-compose.models.piwind.yml and docker-compose.models.scenarios.yml.
• Adds get-piwind.sh / get-scenarios.sh, run automatically when present. get-scenarios.sh clones the Scenarios repo and pulls model files from S3 into SCENARIOS_PATH; both are idempotent.

Deployment overrides

• UI mounts are variables defaulting to the in-repo paths: UI_DEFAULTS, UI_CONFIG, UI_STREAMLIT, and a new UI_ASSETS (ui_assets/, with a README describing the contract).
• Traefik's published ports become OASIS_HTTP_PORT / OASIS_HTTPS_PORT / TRAEFIK_DASHBOARD_PORT, defaulting to 80 / 443 / 8090.
• The UI image reference defaults to coreoasis/oasispythonui_app:latest, so .env no longer has to define it.
• install.sh --build-ui rebuilds the UI image instead of pulling, and pull failures are suppressed rather than fatal. New Makefile targets: build, push, build_and_push, and the scenarios data-seeding targets.
• install.sh also gains -u/--uninstall (stack down + volumes) and -h/--help, and rejects unknown options.

Also

• Scenarios deployment split into a self-contained scenarios/ tree; the 13 analysis-settings files move from defaults/ and are trimmed to the fields the templates use.
• Streamlit deprecations cleared: use_container_width=True → width='stretch'.

TODO

• Update the docs. README.md is untouched and still describes the previous single-model, fixed-port install. Needs the new install.sh flags, the model-set compose + get-*.sh convention for adding a set, the UI_* overrides and ui_assets/, the Traefik port variables, the Makefile targets, and SCENARIOS_PATH.