Add full shell, replaceable Omics adapter and bilingual interaction

Implement approved specification #32 and tickets #33-#37. Keep host authentication server-verified and pin session interaction language. Compile scoped base selectors for browser compatibility and retain full gutters during CSS pruning.

AGENTS.md

@@ -98,8 +98,10 @@ frontend (React/SSE) → backend (Fastify) → pi --mode rpc → tht/harness →
 - **`tht`'s `-c`/`--config` is a PER-COMMAND option** — it must follow the subcommand, never
   precede it (`ThtRunner.buildArgv` enforces this; prepending caused live 500s).
 - **`--json` output must be pristine** (only valid JSON on stdout) — used as a machine contract.
-- **UI strings are English; document *content* stays the workspace language** (Italian for
-  `psd`) because it's the real data. Only chrome/labels are English.
+- **Localization:** deterministic UI uses the EN/IT catalogs with English fallback;
+  model interaction uses the session manifest's immutable `interaction_language`.
+  Workspace content, SQL, and identifiers remain unchanged. For shell modes, portal
+  integration, or translations, read `docs/operations/shell-and-localization.md`.
 - **Workspace schema v4** defines workspace identity and optional Evidence only. PostgreSQL Metadata
   Catalog owns database identity, binding, schema, descriptions, sensitivity, and relationships;
   embedding/model facts come from the installation catalog. The legacy `harness/workspaces/*.yaml` runtime snapshots still use