fix: add missing deletedAt: null soft-delete filters

apps/web/lib/conflict-detection/index.ts

@@ -71,6 +71,7 @@ export async function checkInternalConflicts(
     where: {
       userId,
       allDay: false,
+      deletedAt: null,
       ...(excludeEventId && { id: { not: excludeEventId } }),
       start: { lt: effectiveEnd },
       end: { gt: effectiveStart },
@@ -715,8 +716,8 @@ export async function checkEventConflictsBeforeUpdate(
 
   // Look up existing event to get its current synced time range
   // This is used to exclude the event's external copy from conflict detection
-  const existingEvent = await prisma.event.findUnique({
-    where: { id: eventId },
+  const existingEvent = await prisma.event.findFirst({
+    where: { id: eventId, userId, deletedAt: null },
     select: { start: true, end: true },
   });
 

packages/calendar-sync/src/services/calendar-sync-retry.service.ts

@@ -110,6 +110,7 @@ export function createCalendarSyncRetryService(
           destinationId: destination.id,
           syncStatus: { in: RETRYABLE_STATUSES },
           syncStatusReason: { not: SYNC_RETRY_SKIP_REASON_EVENT_MISSING },
+          deletedAt: null,
           ...(limitedEventIds ? { eventId: { in: limitedEventIds } } : {}),
         },
         ...(limitedEventIds

packages/calendar-sync/src/services/calendar-sync-status.service.ts

@@ -69,6 +69,7 @@ export function createCalendarSyncStatusService(
           eventId: { in: input.eventIds },
           destinationId: input.destinationId,
           provider: input.provider,
+          deletedAt: null,
         },
         orderBy: { lastSyncAttemptAt: "desc" },
       });
@@ -134,6 +135,7 @@ export function createCalendarSyncStatusService(
           eventId: input.eventId,
           destinationId: input.destinationId,
           provider: input.provider,
+          deletedAt: null,
         },
         orderBy: { lastSyncAttemptAt: "desc" },
       });

packages/task-sync/src/repositories/task-reference.repository.ts

@@ -273,7 +273,7 @@ export function createTaskReferenceRepository(
 
     async disableByDestination(destinationId) {
       await prisma.taskReference.updateMany({
-        where: { destinationId },
+        where: { destinationId, deletedAt: null },
         data: {
           syncStatus: "DISABLED",
           syncStatusReason: "DESTINATION_DISABLED",
@@ -283,7 +283,7 @@ export function createTaskReferenceRepository(
 
     async resetForRebuild(destinationId, newExternalTaskListId) {
       await prisma.taskReference.updateMany({
-        where: { destinationId },
+        where: { destinationId, deletedAt: null },
         data: {
           externalTaskId: null,
           externalTaskListId: newExternalTaskListId,
@@ -301,6 +301,7 @@ export function createTaskReferenceRepository(
           credentialId,
           provider,
           syncStatus: { in: ["FAILED", "PENDING_RETRY"] },
+          deletedAt: null,
         },
       });
     },

packages/task-sync/src/services/__tests__/credential-repair.service.test.ts

@@ -191,6 +191,7 @@ describe("CredentialRepairService", () => {
               "TASK_SYNC_CREDENTIAL_REFRESH_FAILED",
             ],
           },
+          deletedAt: null,
         },
         data: {
           syncStatus: "PENDING",

packages/task-sync/src/services/__tests__/destination-change.service.test.ts

@@ -55,7 +55,7 @@ describe("DestinationChangeService", () => {
       await service.handleDisable("dest-1", "user-1");
 
       expect(mockPrisma.taskReference.updateMany).toHaveBeenCalledWith({
-        where: { destinationId: "dest-1" },
+        where: { destinationId: "dest-1", deletedAt: null },
         data: {
           syncStatus: "DISABLED",
           syncStatusReason: "DESTINATION_DISABLED",
@@ -192,7 +192,7 @@ describe("DestinationChangeService", () => {
       );
 
       expect(mockPrisma.taskReference.updateMany).toHaveBeenCalledWith({
-        where: { destinationId: "dest-1" },
+        where: { destinationId: "dest-1", deletedAt: null },
         data: {
           externalTaskId: null,
           externalTaskListId: "new-list-id",
@@ -255,7 +255,7 @@ describe("DestinationChangeService", () => {
       await service.handleCredentialChange("dest-1", "user-1", "new-list-id");
 
       expect(mockPrisma.taskReference.updateMany).toHaveBeenCalledWith({
-        where: { destinationId: "dest-1" },
+        where: { destinationId: "dest-1", deletedAt: null },
         data: {
           externalTaskId: null,
           externalTaskListId: "new-list-id",

packages/task-sync/src/services/__tests__/task-connection.service.test.ts

@@ -395,7 +395,7 @@ describe("TaskConnectionService", () => {
 
     expect(result).toEqual({ disconnectedCredentials: 2 });
     expect(mockPrisma.taskReference.updateMany).toHaveBeenCalledWith({
-      where: { credentialId: { in: ["cred-1", "cred-2"] } },
+      where: { credentialId: { in: ["cred-1", "cred-2"] }, deletedAt: null },
       data: {
         syncStatusReason: null,
         lastSyncAttemptAt: null,
@@ -425,6 +425,7 @@ describe("TaskConnectionService", () => {
       where: {
         credentialId: "cred-9",
         provider: "GOOGLE_TASKS",
+        deletedAt: null,
       },
       data: {
         syncStatusReason: null,

packages/task-sync/src/services/credential-repair.service.ts

@@ -77,6 +77,7 @@ export function createCredentialRepairService(
             credentialId,
             syncStatus: "FAILED",
             syncStatusReason: { in: [...CREDENTIAL_ERROR_REASONS] },
+            deletedAt: null,
           },
           data: {
             syncStatus: "PENDING",

packages/task-sync/src/services/task-connection.service.ts

@@ -516,6 +516,7 @@ export function createTaskConnectionService(
           await tx.taskReference.updateMany({
             where: {
               credentialId: { in: credentialIds },
+              deletedAt: null,
             },
             data: {
               syncStatusReason: null,
@@ -702,6 +703,7 @@ export function createTaskConnectionService(
           where: {
             credentialId,
             provider: credential.provider,
+            deletedAt: null,
           },
           data: {
             syncStatusReason: null,

packages/task-sync/src/services/task-sync-retry.service.ts

@@ -120,6 +120,7 @@ export function createTaskSyncRetryService(
           provider: destination.provider,
           credential: { userId: input.userId },
           syncStatus: { in: RETRYABLE_STATUSES },
+          deletedAt: null,
           ...(limitedTaskIds ? { taskId: { in: limitedTaskIds } } : {}),
         },
         ...(limitedTaskIds