diff --git a/src/components/chat-new-dashboard.test.ts b/src/components/chat-new-dashboard.test.ts
index b2b095167..2ba6c07c1 100644
--- a/src/components/chat-new-dashboard.test.ts
+++ b/src/components/chat-new-dashboard.test.ts
@@ -23,6 +23,7 @@ import { readFile } from "node:fs/promises";
 const dash = await readFile(new URL("./chat-new-dashboard.tsx", import.meta.url), "utf8");
 const chatView = await readFile(new URL("./chat-view.tsx", import.meta.url), "utf8");
 const homeComposer = await readFile(new URL("./home-composer.tsx", import.meta.url), "utf8");
+const boardHook = await readFile(new URL("./home/use-dashboard-board.ts", import.meta.url), "utf8");
 const css = await readFile(new URL("../styles/home-dashboard.css", import.meta.url), "utf8");
 
 // ── (1) chat-view's empty-state split ────────────────────────────────────
@@ -118,6 +119,54 @@ assert.match(
 assert.match(dash, /const boardCards = useDashboardBoard\(\)/, "the board reads the live Tasks board");
 assert.match(dash, /fetch\("\/api\/inbox", \{ cache: "no-store"/, "the needs-you tier reads the live inbox");
 assert.match(dash, /groupInboxFeed\(items\)\.needsYou/, "needs-you uses the same attention tier as the bell");
+assert.match(
+  boardHook,
+  /familiarId: string \| null/,
+  "the lean dashboard-card projection must retain familiar ownership",
+);
+assert.match(
+  boardHook,
+  /familiarId: c\.familiarId \?\? null/,
+  "the Board response must carry familiar ownership into the dashboard model",
+);
+assert.match(
+  dash,
+  /filterFamiliarOwned\(boardCards,\s*familiar\.id\)/,
+  "Board open work must scope to the selected familiar before row derivation",
+);
+assert.match(
+  dash,
+  /filterFamiliarOwned\(needsYou,\s*familiar\.id\)/,
+  "Needs-you inbox work must scope to the selected familiar before row derivation",
+);
+assert.match(
+  dash,
+  /openWorkRows\(scopedBoardCards\)/,
+  "open-work counts, caps, and empty states must derive from scoped Board cards",
+);
+assert.match(
+  dash,
+  /scopedNeedsYou\.map/,
+  "open-work counts, caps, and empty states must derive from scoped Needs-you items",
+);
+assert.match(
+  dash,
+  /workFilter === "inbox" && scopedNeedsYou\.length > 0/,
+  "the Needs-you section link must use the familiar-scoped count",
+);
+assert.match(
+  dash,
+  /filterVisibleChatSessions\(sessions,\s*familiar\.id\)[\s\S]{0,300}?\.slice\(0,\s*RECENT_THREADS_CAP\)/,
+  "Recent threads must apply shared familiar visibility before the three-row cap",
+);
+assert.doesNotMatch(
+  dash.slice(
+    dash.indexOf("const recentThreads = useMemo"),
+    dash.indexOf("return (", dash.indexOf("const recentThreads = useMemo")),
+  ),
+  /\.sort\(/,
+  "Recent threads preserve the shared helper's canonical newest-first ordering",
+);
 assert.match(dash, /OPEN_WORK_FILTERS\.map/, "the board renders the trimmed filter tabs");
 assert.match(
   dash,
diff --git a/src/components/chat-new-dashboard.tsx b/src/components/chat-new-dashboard.tsx
index 92ad7dc99..b96144c21 100644
--- a/src/components/chat-new-dashboard.tsx
+++ b/src/components/chat-new-dashboard.tsx
@@ -29,10 +29,12 @@ import { Icon } from "@/lib/icon";
 import { groupInboxFeed } from "@/lib/inbox-feed";
 import { greetingForHour } from "@/lib/home-greeting";
 import { relativeAge } from "@/lib/rss";
+import { filterVisibleChatSessions } from "@/lib/chat-projects";
 import { useDashboardBoard } from "@/components/home/use-dashboard-board";
 import {
   OPEN_WORK_FILTERS,
   OPEN_WORK_FILTER_LABEL,
+  filterFamiliarOwned,
   filterOpenWork,
   openWorkCounts,
   openWorkPriorityLabel,
@@ -126,12 +128,20 @@ export function ChatNewDashboard({
   // that item's session (or land on Schedules), read-stamped like the bell.
   const boardCards = useDashboardBoard();
   const needsYou = useNeedsYou();
+  const scopedBoardCards = useMemo(
+    () => filterFamiliarOwned(boardCards, familiar.id),
+    [boardCards, familiar.id],
+  );
+  const scopedNeedsYou = useMemo(
+    () => filterFamiliarOwned(needsYou, familiar.id),
+    [needsYou, familiar.id],
+  );
   const openWork = useMemo(() => {
-    const board = openWorkRows(boardCards).map((r) => ({
+    const board = openWorkRows(scopedBoardCards).map((r) => ({
       ...r,
       onOpen: () => navigateMode("board"),
     }));
-    const needs = needsYou.map((item) => ({
+    const needs = scopedNeedsYou.map((item) => ({
       id: `needs-${item.id}`,
       title: item.title,
       kind: "inbox" as const,
@@ -148,7 +158,7 @@ export function ChatNewDashboard({
       },
     }));
     return [...board, ...needs];
-  }, [boardCards, needsYou]);
+  }, [scopedBoardCards, scopedNeedsYou]);
   const [workFilter, setWorkFilter] = useState<OpenWorkFilter>("all");
   const workCounts = useMemo(() => openWorkCounts(openWork), [openWork]);
   // Capped so the no-scroll board fits the pane; "View all in Tasks →" carries
@@ -157,13 +167,13 @@ export function ChatNewDashboard({
     () => filterOpenWork(openWork, workFilter).slice(0, OPEN_WORK_ROWS_CAP),
     [openWork, workFilter],
   );
-  // Recent threads: the freshest titled sessions, newest-first, capped.
+  // Recent threads: this familiar's freshest titled sessions, newest-first,
+  // capped after applying the shared chat visibility contract.
   const recentThreads = useMemo(() => {
-    return sessions
-      .filter((s) => !s.archived_at && !s.generated && Boolean(s.title?.trim()))
-      .sort((a, b) => (b.updated_at ?? "").localeCompare(a.updated_at ?? ""))
+    return filterVisibleChatSessions(sessions, familiar.id)
+      .filter((s) => Boolean(s.title?.trim()))
       .slice(0, RECENT_THREADS_CAP);
-  }, [sessions]);
+  }, [sessions, familiar.id]);
 
   return (
     <div className="home-dash__body home-dash--embed select-none" data-testid="chat-new-dashboard">
@@ -213,7 +223,7 @@ export function ChatNewDashboard({
           <section className="home-dash__section" aria-label="Open work">
             <div className="home-dash__section-head">
               <div className="home-dash__section-label">Open work</div>
-              {workFilter === "inbox" && needsYou.length > 0 ? (
+              {workFilter === "inbox" && scopedNeedsYou.length > 0 ? (
                 <button
                   type="button"
                   className="home-dash__section-link"
diff --git a/src/components/home/dashboard-open-work.test.ts b/src/components/home/dashboard-open-work.test.ts
index a18e0dcff..5b404514a 100644
--- a/src/components/home/dashboard-open-work.test.ts
+++ b/src/components/home/dashboard-open-work.test.ts
@@ -2,6 +2,7 @@
 // Pure derivations for the Home dashboard's Open-work board (launcher 3a).
 import assert from "node:assert/strict";
 import {
+  filterFamiliarOwned,
   filterOpenWork,
   openWorkCounts,
   openWorkPriorityLabel,
@@ -20,6 +21,22 @@ const card = (over = {}) => ({
   ...over,
 });
 
+// ── familiar ownership: exact match; foreign + unassigned work stay out ──
+const owned = filterFamiliarOwned(
+  [
+    { id: "sage", familiarId: "sage" },
+    { id: "nova", familiarId: "nova" },
+    { id: "unassigned", familiarId: null },
+    { id: "missing" },
+  ],
+  "sage",
+);
+assert.deepEqual(
+  owned.map((item) => item.id),
+  ["sage"],
+  "only exact familiar ownership should survive",
+);
+
 // ── openWorkRows: maps columns, drops done + untitled, orders by kind/priority
 {
   const rows = openWorkRows([
diff --git a/src/components/home/dashboard-open-work.ts b/src/components/home/dashboard-open-work.ts
index 6b471a767..1c6a42165 100644
--- a/src/components/home/dashboard-open-work.ts
+++ b/src/components/home/dashboard-open-work.ts
@@ -34,6 +34,15 @@ export type OpenWorkRow = {
   timeoutMs?: number;
 };
 
+/** Keep only work explicitly owned by one familiar. Unassigned work is not
+ *  part of a selected familiar's New Chat dashboard. */
+export function filterFamiliarOwned<T extends { familiarId?: string | null }>(
+  items: readonly T[],
+  familiarId: string,
+): T[] {
+  return items.filter((item) => item.familiarId === familiarId);
+}
+
 /** Board columns that count as open work, in the order they should read. */
 const KIND_RANK: Record<OpenWorkKind, number> = {
   running: 0,
diff --git a/src/components/home/use-dashboard-board.ts b/src/components/home/use-dashboard-board.ts
index be8fe2d48..366aab646 100644
--- a/src/components/home/use-dashboard-board.ts
+++ b/src/components/home/use-dashboard-board.ts
@@ -2,9 +2,10 @@
 
 // Board snapshot for the Home dashboard's "Open work" board (launcher 3a).
 // One /api/board GET, mapped to the lean fields the board rows and filter tabs
-// need: title, column status (→ row kind + chip), priority, and — for running
-// cards — the timeout badge inputs (runningSince/timeoutMs). A failed fetch
-// leaves the empty list so the board degrades to an empty state, never errors.
+// need: title, familiar ownership, column status (→ row kind + chip), priority,
+// and — for running cards — the timeout badge inputs (runningSince/timeoutMs).
+// A failed fetch leaves the empty list so the board degrades to an empty state,
+// never errors.
 //
 // This is a dedicated dashboard fetch for suggestion and pending-task
 // helper) because the dashboard needs the richer per-card lifecycle fields
@@ -16,6 +17,7 @@ import type { CardLifecycle, CardPriority, CardStatus } from "@/lib/cave-board-t
 export type DashboardCard = {
   id: string;
   title: string;
+  familiarId: string | null;
   status: CardStatus;
   priority: CardPriority;
   lifecycle: CardLifecycle;
@@ -38,6 +40,7 @@ export function useDashboardBoard(): DashboardCard[] {
             (c: DashboardCard): DashboardCard => ({
               id: c.id,
               title: c.title,
+              familiarId: c.familiarId ?? null,
               status: c.status,
               priority: c.priority,
               lifecycle: c.lifecycle,
diff --git a/tests/chat-boot-landing.spec.ts b/tests/chat-boot-landing.spec.ts
index 503f21817..549559072 100644
--- a/tests/chat-boot-landing.spec.ts
+++ b/tests/chat-boot-landing.spec.ts
@@ -36,7 +36,7 @@ const SESSION_S1 = {
   updated_at: iso(2),
 };
 
-// Unassigned inbox card — fair game for this familiar's resume pills.
+// Familiar-owned inbox card — this landing must only surface Nova's work.
 const BOARD = {
   ok: true,
   cards: [
@@ -45,7 +45,7 @@ const BOARD = {
       title: "Fix login flow",
       status: "inbox",
       priority: "medium",
-      familiarId: null,
+      familiarId: "nova",
       projectId: null,
       cwd: null,
       createdAt: iso(6),