Register scha for deploy on all webservers (scha#19 Part B) (#3)

## Summary
- Register `scha` in `app_catalog` and `host_apps` on adama, roslin, and ai-server-4080 (prod port **8002**; beta **8012** reserved).
- Update `IMPLEMENTATION.md` ports, apps, Postgres, and NPM tables so every app lists beta + prod.
- Include `scha` in `deploy.sh` help.

Part A (dockerize / CI in the `scha` repo) is tracked separately in [scha#19](ai_ml_operations/scha#19).

## Test plan
- [ ] Confirm inventory YAML loads: `ansible-inventory --list` shows `scha` under each host
- [ ] After Part A merges + `~/Documents/secrets/scha/scha_prod.env` exists: dry-run `./scripts/deploy.sh --app scha --env prod --check`
- [ ] Create DB `scha` on shared Postgres (`10.0.0.230`) and point NPM at `adama:8002` + `roslin:8002` (+ optional `ai-server-4080:8002`)

Reviewed-on: #3

scripts/deploy.sh

@@ -17,7 +17,7 @@ Deploy applications with deploy-apps.yml.
   HOST              Optional. Limit to one host: adama, roslin, or ai-server-4080.
 
 Options:
-  --app NAME        App to deploy (company_site, dta_service, dta_webapp)
+  --app NAME        App to deploy (company_site, dta_service, dta_webapp, scha)
   --env ENV         Environment: beta or prod
   --ref REF         Git ref/sha to deploy (default: master)
   --check           Dry run