diff --git a/apps/server/git/remote-sync.test.ts b/apps/server/git/remote-sync.test.ts
new file mode 100644
index 0000000..8f08044
--- /dev/null
+++ b/apps/server/git/remote-sync.test.ts
@@ -0,0 +1,172 @@
+import { describe, it, expect, vi, beforeEach } from 'vitest'
+import { ProjectSyncManager, type SyncResult } from './remote-sync.js'
+import type { ProjectRepository } from '../db/repositories/project-repository.js'
+
+vi.mock('simple-git', () => ({
+  simpleGit: vi.fn(),
+}))
+
+vi.mock('./project-clones.js', () => ({
+  ensureProjectClone: vi.fn().mockResolvedValue('/tmp/fake-clone'),
+}))
+
+vi.mock('../logger/index.js', () => ({
+  createModuleLogger: () => ({
+    info: vi.fn(),
+    warn: vi.fn(),
+    error: vi.fn(),
+  }),
+}))
+
+function makeRepo(overrides: Partial<ProjectRepository> = {}): ProjectRepository {
+  return {
+    findAll: vi.fn().mockResolvedValue([]),
+    findById: vi.fn().mockResolvedValue(null),
+    create: vi.fn(),
+    update: vi.fn().mockResolvedValue({}),
+    delete: vi.fn(),
+    findProjectsByInitiativeId: vi.fn().mockResolvedValue([]),
+    setInitiativeProjects: vi.fn().mockResolvedValue(undefined),
+    ...overrides,
+  } as unknown as ProjectRepository
+}
+
+const project1 = {
+  id: 'proj-1',
+  name: 'alpha',
+  url: 'https://github.com/org/alpha',
+  defaultBranch: 'main',
+  lastFetchedAt: null,
+  createdAt: new Date(),
+  updatedAt: new Date(),
+}
+
+const project2 = {
+  id: 'proj-2',
+  name: 'beta',
+  url: 'https://github.com/org/beta',
+  defaultBranch: 'main',
+  lastFetchedAt: null,
+  createdAt: new Date(),
+  updatedAt: new Date(),
+}
+
+describe('ProjectSyncManager', () => {
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  let simpleGitMock: any
+
+  beforeEach(async () => {
+    const mod = await import('simple-git')
+    simpleGitMock = vi.mocked(mod.simpleGit)
+    simpleGitMock.mockReset()
+  })
+
+  describe('syncAllProjects', () => {
+    it('returns empty array when no projects exist', async () => {
+      const repo = makeRepo({ findAll: vi.fn().mockResolvedValue([]) })
+      const manager = new ProjectSyncManager(repo, '/workspace')
+      const results = await manager.syncAllProjects()
+      expect(results).toEqual([])
+    })
+
+    it('returns success result for each project when all succeed', async () => {
+      const mockGit = {
+        fetch: vi.fn().mockResolvedValue({}),
+        raw: vi.fn().mockResolvedValue(''),
+      }
+      simpleGitMock.mockReturnValue(mockGit)
+
+      const repo = makeRepo({
+        findAll: vi.fn().mockResolvedValue([project1, project2]),
+        findById: vi.fn()
+          .mockResolvedValueOnce(project1)
+          .mockResolvedValueOnce(project2),
+        update: vi.fn().mockResolvedValue({}),
+      })
+      const manager = new ProjectSyncManager(repo, '/workspace')
+      const results = await manager.syncAllProjects()
+
+      expect(results).toHaveLength(2)
+      expect(results[0]).toMatchObject({
+        projectId: 'proj-1',
+        projectName: 'alpha',
+        success: true,
+        fetched: true,
+      })
+      expect(results[1]).toMatchObject({
+        projectId: 'proj-2',
+        projectName: 'beta',
+        success: true,
+        fetched: true,
+      })
+    })
+
+    it('returns partial failure when the second project fetch throws', async () => {
+      const mockGitSuccess = {
+        fetch: vi.fn().mockResolvedValue({}),
+        raw: vi.fn().mockResolvedValue(''),
+      }
+      const mockGitFail = {
+        fetch: vi.fn().mockRejectedValue(new Error('network error')),
+        raw: vi.fn().mockResolvedValue(''),
+      }
+      simpleGitMock
+        .mockReturnValueOnce(mockGitSuccess)
+        .mockReturnValueOnce(mockGitFail)
+
+      const repo = makeRepo({
+        findAll: vi.fn().mockResolvedValue([project1, project2]),
+        findById: vi.fn()
+          .mockResolvedValueOnce(project1)
+          .mockResolvedValueOnce(project2),
+        update: vi.fn().mockResolvedValue({}),
+      })
+      const manager = new ProjectSyncManager(repo, '/workspace')
+      const results = await manager.syncAllProjects()
+
+      expect(results).toHaveLength(2)
+      expect(results[0]).toMatchObject({ projectId: 'proj-1', success: true })
+      expect(results[1]).toMatchObject({
+        projectId: 'proj-2',
+        success: false,
+        error: expect.any(String),
+      })
+    })
+  })
+
+  describe('SyncResult shape', () => {
+    it('result always contains projectId and success fields', async () => {
+      const mockGit = {
+        fetch: vi.fn().mockResolvedValue({}),
+        raw: vi.fn().mockResolvedValue(''),
+      }
+      simpleGitMock.mockReturnValue(mockGit)
+
+      const repo = makeRepo({
+        findAll: vi.fn().mockResolvedValue([project1]),
+        findById: vi.fn().mockResolvedValue(project1),
+        update: vi.fn().mockResolvedValue({}),
+      })
+      const manager = new ProjectSyncManager(repo, '/workspace')
+      const results = await manager.syncAllProjects()
+
+      expect(results[0]).toMatchObject({
+        projectId: expect.any(String),
+        success: expect.any(Boolean),
+      })
+    })
+  })
+
+  describe('failure counting logic', () => {
+    it('counts failures from SyncResult array', () => {
+      const results: Pick<SyncResult, 'success'>[] = [
+        { success: true },
+        { success: false },
+        { success: true },
+        { success: false },
+      ]
+      const failed = results.filter(r => !r.success)
+      expect(failed.length).toBe(2)
+    })
+  })
+})
diff --git a/apps/web/src/routes/settings/projects.tsx b/apps/web/src/routes/settings/projects.tsx
index 230ceb2..95b561d 100644
--- a/apps/web/src/routes/settings/projects.tsx
+++ b/apps/web/src/routes/settings/projects.tsx
@@ -19,6 +19,24 @@ function ProjectsSettingsPage() {
   const projectsQuery = trpc.listProjects.useQuery()
   const utils = trpc.useUtils()
 
+  const syncAllMutation = trpc.syncAllProjects.useMutation({
+    onSuccess: (results) => {
+      const failed = results.filter(r => !r.success)
+      if (failed.length === 0) {
+        toast.success('All projects synced.')
+      } else {
+        toast.error(`${failed.length} project(s) failed to sync — check project names in the list.`)
+      }
+      void utils.listProjects.invalidate()
+      results.forEach(r => {
+        void utils.getProjectSyncStatus.invalidate({ id: r.projectId })
+      })
+    },
+    onError: (err) => {
+      toast.error(`Sync failed: ${err.message}`)
+    },
+  })
+
   const deleteMutation = trpc.deleteProject.useMutation({
     onSuccess: () => {
       void utils.listProjects.invalidate()
@@ -43,7 +61,18 @@ function ProjectsSettingsPage() {
 
   return (
     <div className="space-y-6">
-      <div className="flex justify-end">
+      <div className="flex items-center justify-end gap-2">
+        {(projects?.length ?? 0) > 0 && (
+          <Button
+            variant="outline"
+            size="sm"
+            onClick={() => syncAllMutation.mutate()}
+            disabled={syncAllMutation.isPending}
+          >
+            <RefreshCw className={syncAllMutation.isPending ? 'animate-spin mr-2 h-4 w-4' : 'mr-2 h-4 w-4'} />
+            {syncAllMutation.isPending ? 'Syncing…' : 'Sync All'}
+          </Button>
+        )}
         <Button size="sm" onClick={() => setRegisterOpen(true)}>
           <Plus className="mr-2 h-4 w-4" />
           Register Project
@@ -72,6 +101,7 @@ function ProjectsSettingsPage() {
           <ProjectCard
             key={project.id}
             project={project}
+            syncAllPending={syncAllMutation.isPending}
             onDelete={() => {
               if (window.confirm(`Delete project "${project.name}"? This will also remove the cloned repository.`)) {
                 deleteMutation.mutate({ id: project.id })
@@ -108,9 +138,11 @@ function formatRelativeTime(date: Date | string | null): string {
 function ProjectCard({
   project,
   onDelete,
+  syncAllPending,
 }: {
   project: { id: string; name: string; url: string; defaultBranch: string; lastFetchedAt: Date | null }
   onDelete: () => void
+  syncAllPending?: boolean
 }) {
   const [editing, setEditing] = useState(false)
   const [editValue, setEditValue] = useState(project.defaultBranch)
@@ -215,7 +247,7 @@ function ProjectCard({
           size="icon"
           className="shrink-0 text-muted-foreground"
           onClick={() => syncMutation.mutate({ id: project.id })}
-          disabled={syncMutation.isPending}
+          disabled={syncMutation.isPending || syncAllPending}
           title="Sync from remote"
         >
           <RefreshCw className={`h-4 w-4 ${syncMutation.isPending ? 'animate-spin' : ''}`} />