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.

PROJECT_STATE.md

@@ -1,6 +1,6 @@
 # ThothII — Project State
 
-Last updated: 2026-09-12.
+Last updated: 2026-09-13.
 
 This file is the short operational snapshot. Stable commands and the architecture mental model
 live in `AGENTS.md`; current design and runtime contracts live under `docs/architecture/`,
@@ -12,6 +12,18 @@ Authentik, internal catalog/embedding services, and the PSD workspace repository
 `docs/operations/server-upgrade-gitea-workspace-v2.md`. Treat its operator gates and rollback
 requirements as mandatory; do not replace the running server stack in place.
 
+## Full/embedded shell and bilingual interface
+
+Full/embedded shell, EN/IT UI, immutable session interaction language, dark theme,
+fullscreen and full-mode logout are implemented. The local Mac descriptor explicitly
+sets `shell.mode: full` and `shell.defaultLocale: en`; the native `tht` and local
+core/frontend images were updated on 2026-09-13. Omics remains embedded and server
+verified, through the replaceable presentation-only PortalAdapter. Its changes are
+in local Omics commit `95154e1`; no production deployment or push was performed.
+See `docs/operations/shell-and-localization.md` for integration and installation
+instructions and `docs/reports/2026-09-13-full-shell-implementation.md` for tests,
+independent reviews, local browser checks and rollback details.
+
 ## Current product shape
 
 Gitea #28–#31 follow-up is implemented in this checkout: Workspace's four tabs,