feat: add admin panel

src/beaver_gateway/storage/__init__.py

@@ -0,0 +1,40 @@
+"""SQLModel-backed persistence (Phase 4.1).
+
+The storage layer carries three tables — :class:`Token`, :class:`Session`,
+:class:`AuditLog` — and a thin :class:`Database` wrapper around a sync
+SQLAlchemy engine. Phase 4.2 (auth migration) and Phase 4.3 (admin UI)
+build on this; Phase 4.1 itself only schemas the data and exposes the
+``Database`` on :class:`GatewayRuntime` so later phases can reach it.
+"""
+
+from beaver_gateway.storage.db import (
+    Database,
+    append_audit,
+    close_session,
+    create_token,
+    list_active_tokens,
+    list_audit_records,
+    list_tokens,
+    revoke_token,
+    touch_session,
+    touch_token,
+    upsert_session,
+)
+from beaver_gateway.storage.models import AuditLog, Session, Token
+
+__all__ = [
+    "AuditLog",
+    "Database",
+    "Session",
+    "Token",
+    "append_audit",
+    "close_session",
+    "create_token",
+    "list_active_tokens",
+    "list_audit_records",
+    "list_tokens",
+    "revoke_token",
+    "touch_session",
+    "touch_token",
+    "upsert_session",
+]