diff --git a/__tests__/components/streams/stream-card-copy-link.test.tsx b/__tests__/components/streams/stream-card-copy-link.test.tsx
new file mode 100644
index 0000000..99ff389
--- /dev/null
+++ b/__tests__/components/streams/stream-card-copy-link.test.tsx
@@ -0,0 +1,123 @@
+import { describe, it, expect, vi, beforeEach } from 'vitest'
+import { render, screen, fireEvent, waitFor } from '@testing-library/react'
+import { StreamCard } from '@/components/streams/stream-card'
+import type { StreamData } from '@/types/stream'
+
+// Issue #918: coverage for the copy-link quick action
+// (handleCopyLink in components/streams/stream-card.tsx).
+
+vi.mock('next/link', () => ({
+  default: ({ href, children, ...props }: any) => (
+    <a href={href} {...props}>
+      {children}
+    </a>
+  ),
+}))
+
+const WALLET = 'GWALLET111'
+const OTHER = 'GOTHER222'
+const NOW = 1_700_050_000
+
+vi.mock('@/hooks/use-now', () => ({ useNow: vi.fn(() => NOW) }))
+vi.mock('@/hooks/use-wallet', () => ({ useWallet: vi.fn(() => ({ address: WALLET })) }))
+vi.mock('@/hooks/use-token-price', () => ({
+  useTokenPrice: vi.fn(() => ({ usdPrice: null, loading: false })),
+  formatUsd: (n: number) => `$${n}`,
+}))
+
+const { toastSuccess } = vi.hoisted(() => ({ toastSuccess: vi.fn() }))
+vi.mock('sonner', () => ({ toast: { success: toastSuccess } }))
+
+vi.mock('@/hooks/use-hidden-streams', () => ({
+  useHiddenStreams: () => ({
+    isBlocked: () => false,
+    isPinned: () => false,
+    hideStream: vi.fn(),
+    unhideStream: vi.fn(),
+    blockSender: vi.fn(),
+    unblockSender: vi.fn(),
+    pinStream: vi.fn(),
+    unpinStream: vi.fn(),
+  }),
+}))
+
+const TOKEN = { address: 'CUSDC', symbol: 'USDC', decimals: 7 }
+
+function makeStream(overrides?: Partial<StreamData>): StreamData {
+  return {
+    id: 'stream-abc',
+    sender: OTHER,
+    recipient: WALLET,
+    token: TOKEN,
+    depositedAmount: 100_000_000n,
+    withdrawnAmount: 0n,
+    startTime: BigInt(NOW - 3600),
+    endTime: BigInt(NOW + 3600),
+    cliffTime: BigInt(NOW - 3600),
+    cliffAmount: 0n,
+    amountPerSecond: 27_777n,
+    linearAmount: 100_000_000n,
+    duration: 7200n,
+    cancelled: false,
+    ...overrides,
+  }
+}
+
+const mockWriteText = vi.fn()
+
+beforeEach(() => {
+  vi.clearAllMocks()
+  Object.defineProperty(window.navigator, 'clipboard', {
+    value: { writeText: mockWriteText },
+    configurable: true,
+  })
+  Object.defineProperty(window, 'location', {
+    value: { origin: 'https://app.flowstar.io' },
+    writable: true,
+  })
+})
+
+describe('StreamCard — copy link', () => {
+  it('writes <origin>/app/stream/<id> to the clipboard', () => {
+    render(<StreamCard stream={makeStream()} />)
+    fireEvent.click(screen.getByTestId('stream-card-copy-link-stream-abc'))
+    expect(mockWriteText).toHaveBeenCalledWith('https://app.flowstar.io/app/stream/stream-abc')
+    expect(toastSuccess).toHaveBeenCalledWith('Link copied to clipboard')
+  })
+
+  it('does not navigate the card link when copy-link is clicked', () => {
+    render(<StreamCard stream={makeStream()} />)
+    const link = screen.getByRole('link')
+    const clickEvent = new MouseEvent('click', { bubbles: true, cancelable: true })
+    const preventDefaultSpy = vi.spyOn(clickEvent, 'preventDefault')
+
+    fireEvent.click(screen.getByTestId('stream-card-copy-link-stream-abc'))
+
+    // The quick-action's own click handler calls preventDefault/stopPropagation,
+    // which is what stops the surrounding <Link> from navigating.
+    expect(mockWriteText).toHaveBeenCalledTimes(1)
+    expect(link).toHaveAttribute('href', '/app/stream/stream-abc')
+    preventDefaultSpy.mockRestore()
+  })
+
+  it('shows the check icon briefly, then resets to the link icon', async () => {
+    render(<StreamCard stream={makeStream()} />)
+    const button = screen.getByTestId('stream-card-copy-link-stream-abc')
+    expect(button.querySelector('svg')).not.toBeNull()
+
+    fireEvent.click(button)
+
+    // Immediately after the click, the check icon is shown.
+    await waitFor(() => {
+      expect(button.innerHTML).toContain('check')
+    })
+
+    // After the reset timeout, it reverts to the link icon.
+    await waitFor(
+      () => {
+        expect(button.innerHTML).not.toContain('check')
+      },
+      { timeout: 2000 },
+    )
+  })
+})
diff --git a/__tests__/components/streams/stream-card-menu.test.tsx b/__tests__/components/streams/stream-card-menu.test.tsx
index d03e8d2..9718f5e 100644
--- a/__tests__/components/streams/stream-card-menu.test.tsx
+++ b/__tests__/components/streams/stream-card-menu.test.tsx
@@ -30,6 +30,7 @@ vi.mock('sonner', () => ({ toast: { success: toastSuccess } }))
 
 const hidden = vi.hoisted(() => ({
   blocked: new Set<string>(),
+  pinned: new Set<string>(),
   hideStream: vi.fn(),
   unhideStream: vi.fn(),
   blockSender: vi.fn(),
@@ -41,7 +42,7 @@ const hidden = vi.hoisted(() => ({
 vi.mock('@/hooks/use-hidden-streams', () => ({
   useHiddenStreams: () => ({
     isBlocked: (address: string) => hidden.blocked.has(address),
-    isPinned: () => false,
+    isPinned: (id: string) => hidden.pinned.has(id),
     hideStream: hidden.hideStream,
     unhideStream: hidden.unhideStream,
     blockSender: hidden.blockSender,
@@ -81,6 +82,7 @@ function openMenu(id = 'stream-abc') {
 beforeEach(() => {
   vi.clearAllMocks()
   hidden.blocked.clear()
+  hidden.pinned.clear()
 })
 
 describe('StreamCard — hide/block menu visibility', () => {
@@ -164,3 +166,30 @@ describe('StreamCard — block/unblock sender', () => {
     expect(toastSuccess).toHaveBeenCalledWith('Sender unblocked')
   })
 })
+
+// Issue #916: coverage for the pin/unpin action (handlePinToggle in
+// components/streams/stream-card.tsx).
+describe('StreamCard — pin/unpin', () => {
+  it('"Pin to top" calls pinStream and shows a pinned toast', () => {
+    render(<StreamCard stream={makeStream()} />)
+    openMenu()
+    expect(screen.getByText('Pin to top')).toBeInTheDocument()
+    fireEvent.click(screen.getByText('Pin to top'))
+
+    expect(hidden.pinStream).toHaveBeenCalledWith('stream-abc')
+    expect(hidden.unpinStream).not.toHaveBeenCalled()
+    expect(toastSuccess).toHaveBeenCalledWith('Stream pinned to top')
+  })
+
+  it('shows "Unpin stream" for a pinned card and calls unpinStream', () => {
+    hidden.pinned.add('stream-abc')
+    render(<StreamCard stream={makeStream()} />)
+    openMenu()
+    expect(screen.queryByText('Pin to top')).not.toBeInTheDocument()
+    fireEvent.click(screen.getByText('Unpin stream'))
+
+    expect(hidden.unpinStream).toHaveBeenCalledWith('stream-abc')
+    expect(hidden.pinStream).not.toHaveBeenCalled()
+    expect(toastSuccess).toHaveBeenCalledWith('Stream unpinned')
+  })
+})
diff --git a/__tests__/components/webhook-settings.test.tsx b/__tests__/components/webhook-settings.test.tsx
index 8352130..57fd9c9 100644
--- a/__tests__/components/webhook-settings.test.tsx
+++ b/__tests__/components/webhook-settings.test.tsx
@@ -24,6 +24,7 @@ const mockAddWebhook = vi.fn()
 const mockRemoveWebhook = vi.fn()
 const mockToggleWebhook = vi.fn()
 const mockTestWebhook = vi.fn()
+const mockResendDelivery = vi.fn()
 
 const defaultHookState = {
   webhooks: [] as ReturnType<typeof import('@/hooks/use-webhooks').useWebhooks>['webhooks'],
@@ -32,6 +33,7 @@ const defaultHookState = {
   removeWebhook: mockRemoveWebhook,
   toggleWebhook: mockToggleWebhook,
   testWebhook: mockTestWebhook,
+  resendDelivery: mockResendDelivery,
   fireEvent: vi.fn(),
 }
 
@@ -312,3 +314,88 @@ describe('WebhookSettings – delivery history', () => {
     expect(screen.queryByText('220')).not.toBeInTheDocument()
   })
 })
+
+// Issue #919: coverage for the resend-delivery action (handleResend in
+// components/webhooks/webhook-settings.tsx).
+describe('WebhookSettings – resend delivery', () => {
+  const FAILED_DELIVERY = {
+    webhookId: 'hook-1',
+    eventType: 'stream.created' as const,
+    statusCode: 500,
+    deliveredAt: Date.now(),
+    success: false,
+    payload: {
+      schema_version: 1,
+      event: 'stream.created' as const,
+      timestamp: new Date().toISOString(),
+      data: {},
+    },
+  }
+
+  const SUCCEEDED_DELIVERY = {
+    webhookId: 'hook-1',
+    eventType: 'stream.created' as const,
+    statusCode: 200,
+    deliveredAt: Date.now(),
+    success: true,
+    payload: {
+      schema_version: 1,
+      event: 'stream.created' as const,
+      timestamp: new Date().toISOString(),
+      data: {},
+    },
+  }
+
+  beforeEach(() => {
+    vi.clearAllMocks()
+  })
+
+  it('only shows the resend action for failed deliveries', () => {
+    mockUseWebhooks.mockReturnValue({
+      ...defaultHookState,
+      history: [FAILED_DELIVERY, SUCCEEDED_DELIVERY],
+    })
+    setup()
+    expect(screen.getAllByLabelText('Resend delivery')).toHaveLength(1)
+  })
+
+  it('calls resendDelivery with the delivery when resend is clicked', async () => {
+    mockResendDelivery.mockResolvedValue(true)
+    mockUseWebhooks.mockReturnValue({ ...defaultHookState, history: [FAILED_DELIVERY] })
+    setup()
+    fireEvent.click(screen.getByLabelText('Resend delivery'))
+    await waitFor(() => expect(mockResendDelivery).toHaveBeenCalledWith(FAILED_DELIVERY))
+  })
+
+  it('shows a success toast when the resend succeeds', async () => {
+    const { toast } = await import('sonner')
+    mockResendDelivery.mockResolvedValue(true)
+    mockUseWebhooks.mockReturnValue({ ...defaultHookState, history: [FAILED_DELIVERY] })
+    setup()
+    fireEvent.click(screen.getByLabelText('Resend delivery'))
+    await waitFor(() =>
+      expect(toast.success).toHaveBeenCalledWith('Delivery resent successfully'),
+    )
+  })
+
+  it('shows an error toast when the resend fails', async () => {
+    const { toast } = await import('sonner')
+    mockResendDelivery.mockResolvedValue(false)
+    mockUseWebhooks.mockReturnValue({ ...defaultHookState, history: [FAILED_DELIVERY] })
+    setup()
+    fireEvent.click(screen.getByLabelText('Resend delivery'))
+    await waitFor(() =>
+      expect(toast.error).toHaveBeenCalledWith('Resend failed', expect.any(Object)),
+    )
+  })
+
+  it('disables the resend button while the resend is in flight', async () => {
+    // Never resolves so the button stays disabled
+    mockResendDelivery.mockReturnValue(new Promise(() => {}))
+    mockUseWebhooks.mockReturnValue({ ...defaultHookState, history: [FAILED_DELIVERY] })
+    setup()
+    const resendBtn = screen.getByLabelText('Resend delivery')
+    fireEvent.click(resendBtn)
+    await waitFor(() => expect(resendBtn).toBeDisabled())
+  })
+})
diff --git a/__tests__/hooks/use-notification-preferences.test.ts b/__tests__/hooks/use-notification-preferences.test.ts
new file mode 100644
index 0000000..97d32da
--- /dev/null
+++ b/__tests__/hooks/use-notification-preferences.test.ts
@@ -0,0 +1,68 @@
+import { describe, it, expect, beforeEach, vi } from 'vitest'
+import { renderHook, act } from '@testing-library/react'
+import {
+  useNotificationPreferences,
+  isNotificationTypeEnabled,
+} from '@/hooks/use-notification-preferences'
+
+const STORAGE_KEY = 'flowstar:notification-preferences'
+
+describe('useNotificationPreferences', () => {
+  beforeEach(() => {
+    localStorage.clear()
+  })
+
+  it('defaults all notification types to enabled when storage is empty', () => {
+    const { result } = renderHook(() => useNotificationPreferences())
+    expect(result.current.preferences).toEqual({
+      stream_created: true,
+      stream_cancelled: true,
+      withdrawal: true,
+    })
+  })
+
+  it('updates persist to localStorage', () => {
+    const { result } = renderHook(() => useNotificationPreferences())
+    act(() => {
+      result.current.setPreference('withdrawal', false)
+    })
+    expect(result.current.preferences.withdrawal).toBe(false)
+    const stored = JSON.parse(localStorage.getItem(STORAGE_KEY) ?? '{}')
+    expect(stored.withdrawal).toBe(false)
+  })
+
+  it('isNotificationTypeEnabled reflects saved preferences', () => {
+    const { result } = renderHook(() => useNotificationPreferences())
+    act(() => {
+      result.current.setPreference('stream_created', false)
+    })
+    expect(isNotificationTypeEnabled('stream_created')).toBe(false)
+    expect(isNotificationTypeEnabled('withdrawal')).toBe(true)
+  })
+
+  it('falls back to defaults when stored JSON is corrupt', () => {
+    localStorage.setItem(STORAGE_KEY, '{not valid json')
+    const { result } = renderHook(() => useNotificationPreferences())
+    expect(result.current.preferences).toEqual({
+      stream_created: true,
+      stream_cancelled: true,
+      withdrawal: true,
+    })
+    expect(isNotificationTypeEnabled('withdrawal')).toBe(true)
+  })
+
+  it('calls onSaveError when persisting fails', () => {
+    const onSaveError = vi.fn()
+    const setItemSpy = vi
+      .spyOn(Storage.prototype, 'setItem')
+      .mockImplementation(() => {
+        throw new Error('quota exceeded')
+      })
+    const { result } = renderHook(() => useNotificationPreferences(onSaveError))
+    act(() => {
+      result.current.setPreference('withdrawal', false)
+    })
+    expect(onSaveError).toHaveBeenCalledTimes(1)
+    setItemSpy.mockRestore()
+  })
+})