feat(deploy): docker images, compose, roles SQL, local workspace

- core.Dockerfile: python:3.12-slim + node 22 copied (same bookworm glibc), non-root, tht+pi
- frontend.Dockerfile: vite build (env-driven base/assetsDir) + nginx-unprivileged
- compose.yaml (embedded, omics_network ext, zero host ports) + docker-compose.dev.yml (standalone)
- deploy/sql: thoth_dwh_reader (ro) + thoth_vector_rw (rw) roles
- deploy/thothii.env.example + harness/workspaces/local.yaml (direct DWH+vector, 5438)
- scripts/docker-smoke.sh; .dockerignore; gitignore deploy secrets
- verified: both images build, core health {ok}, config check validates local.yaml

deploy/sql/20-vector-roles.sql

@@ -0,0 +1,23 @@
+-- ThothII — ruolo vector read+write (schema vectors).
+-- Stessa istanza del DWH (porta 5438). ThothII indicizza (write) + ricerca (read) direttamente.
+-- La separazione reader/writer resta rilevante solo per il path REST (non usato in Profile A).
+--   psql -h localhost -p 5438 -U postgres -d postgres -v PWD='<secret>' -f 20-vector-roles.sql
+DO $$
+BEGIN
+  IF NOT EXISTS (SELECT 1 FROM pg_roles WHERE rolname = 'thoth_vector_rw') THEN
+    CREATE ROLE thoth_vector_rw LOGIN PASSWORD :'PWD';
+  END IF;
+END $$;
+
+CREATE SCHEMA IF NOT EXISTS vectors;
+
+-- L'estensione pgvector deve esistere (già presente nell'istanza di produzione).
+-- CREATE EXTENSION IF NOT EXISTS vector;
+
+GRANT USAGE, CREATE ON SCHEMA vectors TO thoth_vector_rw;
+GRANT SELECT, INSERT, UPDATE, DELETE ON ALL TABLES IN SCHEMA vectors TO thoth_vector_rw;
+GRANT USAGE, SELECT ON ALL SEQUENCES IN SCHEMA vectors TO thoth_vector_rw;
+ALTER DEFAULT PRIVILEGES IN SCHEMA vectors
+  GRANT SELECT, INSERT, UPDATE, DELETE ON TABLES TO thoth_vector_rw;
+ALTER DEFAULT PRIVILEGES IN SCHEMA vectors
+  GRANT USAGE, SELECT ON SEQUENCES TO thoth_vector_rw;