feat(db): mesh data model — meshes, members, invites, audit log

- pgSchema "mesh" with 4 tables isolating the peer mesh domain
- Enums: visibility, transport, tier, role
- audit_log is metadata-only (E2E encryption enforced at broker/client)
- Cascade on mesh delete, soft-delete via archivedAt/revokedAt

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/web/src/modules/common/layout/dashboard/scroll-container.tsx

@@ -0,0 +1,60 @@
+"use client";
+
+import { useCallback, useEffect, useRef, useState } from "react";
+
+import { cn } from "@turbostarter/ui";
+
+interface ScrollContainerProps {
+  children: React.ReactNode;
+  className?: string;
+}
+
+export function ScrollContainer({ children, className }: ScrollContainerProps) {
+  const scrollRef = useRef<HTMLDivElement>(null);
+  const [_canScrollUp, setCanScrollUp] = useState(false);
+  const [_canScrollDown, setCanScrollDown] = useState(false);
+
+  const updateScrollState = useCallback(() => {
+    const el = scrollRef.current;
+    if (!el) return;
+
+    const { scrollTop, scrollHeight, clientHeight } = el;
+    setCanScrollUp(scrollTop > 1);
+    setCanScrollDown(scrollTop + clientHeight < scrollHeight - 1);
+  }, []);
+
+  // Check on mount, resize, and content changes
+  useEffect(() => {
+    const el = scrollRef.current;
+    if (!el) return;
+
+    // Initial check
+    updateScrollState();
+
+    // Watch for size changes
+    const observer = new ResizeObserver(updateScrollState);
+    observer.observe(el);
+
+    // Also observe children for content changes
+    const mutationObserver = new MutationObserver(updateScrollState);
+    mutationObserver.observe(el, { childList: true, subtree: true });
+
+    return () => {
+      observer.disconnect();
+      mutationObserver.disconnect();
+    };
+  }, [updateScrollState]);
+
+  return (
+    <div className={cn("relative flex-1 overflow-hidden", className)}>
+      {/* Scroll content - shadows removed, handled by individual components */}
+      <div
+        ref={scrollRef}
+        onScroll={updateScrollState}
+        className="h-full overflow-auto"
+      >
+        {children}
+      </div>
+    </div>
+  );
+}