diff --git a/server/src/__tests__/issue-activity-events-routes.test.ts b/server/src/__tests__/issue-activity-events-routes.test.ts
index 36a64bd32e5..9fc6598c105 100644
--- a/server/src/__tests__/issue-activity-events-routes.test.ts
+++ b/server/src/__tests__/issue-activity-events-routes.test.ts
@@ -49,6 +49,19 @@ vi.mock("../services/index.js", () => ({
     listCompanyIds: vi.fn(async () => ["company-1"]),
   }),
   issueApprovalService: () => ({}),
+  issueReferenceService: () => ({
+    deleteDocumentSource: async () => undefined,
+    diffIssueReferenceSummary: () => ({
+      addedReferencedIssues: [],
+      removedReferencedIssues: [],
+      currentReferencedIssues: [],
+    }),
+    emptySummary: () => ({ outbound: [], inbound: [] }),
+    listIssueReferenceSummary: async () => ({ outbound: [], inbound: [] }),
+    syncComment: async () => undefined,
+    syncDocument: async () => undefined,
+    syncIssue: async () => undefined,
+  }),
   issueService: () => mockIssueService,
   logActivity: mockLogActivity,
   projectService: () => ({}),
diff --git a/server/src/__tests__/issue-agent-mutation-ownership-routes.test.ts b/server/src/__tests__/issue-agent-mutation-ownership-routes.test.ts
index d3655240d9d..d06127c2c91 100644
--- a/server/src/__tests__/issue-agent-mutation-ownership-routes.test.ts
+++ b/server/src/__tests__/issue-agent-mutation-ownership-routes.test.ts
@@ -92,6 +92,19 @@ vi.mock("../services/index.js", () => ({
     listCompanyIds: vi.fn(async () => [companyId]),
   }),
   issueApprovalService: () => ({}),
+  issueReferenceService: () => ({
+    deleteDocumentSource: async () => undefined,
+    diffIssueReferenceSummary: () => ({
+      addedReferencedIssues: [],
+      removedReferencedIssues: [],
+      currentReferencedIssues: [],
+    }),
+    emptySummary: () => ({ outbound: [], inbound: [] }),
+    listIssueReferenceSummary: async () => ({ outbound: [], inbound: [] }),
+    syncComment: async () => undefined,
+    syncDocument: async () => undefined,
+    syncIssue: async () => undefined,
+  }),
   issueService: () => mockIssueService,
   logActivity: vi.fn(async () => undefined),
   projectService: () => ({}),
diff --git a/server/src/__tests__/issue-attachment-routes.test.ts b/server/src/__tests__/issue-attachment-routes.test.ts
index 51cba13f556..ede76e66818 100644
--- a/server/src/__tests__/issue-attachment-routes.test.ts
+++ b/server/src/__tests__/issue-attachment-routes.test.ts
@@ -56,6 +56,19 @@ function registerRouteMocks() {
       listCompanyIds: vi.fn(async () => ["company-1"]),
     }),
     issueApprovalService: () => ({}),
+    issueReferenceService: () => ({
+      deleteDocumentSource: async () => undefined,
+      diffIssueReferenceSummary: () => ({
+        addedReferencedIssues: [],
+        removedReferencedIssues: [],
+        currentReferencedIssues: [],
+      }),
+      emptySummary: () => ({ outbound: [], inbound: [] }),
+      listIssueReferenceSummary: async () => ({ outbound: [], inbound: [] }),
+      syncComment: async () => undefined,
+      syncDocument: async () => undefined,
+      syncIssue: async () => undefined,
+    }),
     issueService: () => mockIssueService,
     logActivity: mockLogActivity,
     projectService: () => ({}),
diff --git a/server/src/__tests__/issue-closed-workspace-routes.test.ts b/server/src/__tests__/issue-closed-workspace-routes.test.ts
index e9a876023fa..7f976649fb5 100644
--- a/server/src/__tests__/issue-closed-workspace-routes.test.ts
+++ b/server/src/__tests__/issue-closed-workspace-routes.test.ts
@@ -74,6 +74,19 @@ function registerServiceMocks() {
       listCompanyIds: vi.fn(async () => ["company-1"]),
     }),
     issueApprovalService: () => ({}),
+    issueReferenceService: () => ({
+      deleteDocumentSource: async () => undefined,
+      diffIssueReferenceSummary: () => ({
+        addedReferencedIssues: [],
+        removedReferencedIssues: [],
+        currentReferencedIssues: [],
+      }),
+      emptySummary: () => ({ outbound: [], inbound: [] }),
+      listIssueReferenceSummary: async () => ({ outbound: [], inbound: [] }),
+      syncComment: async () => undefined,
+      syncDocument: async () => undefined,
+      syncIssue: async () => undefined,
+    }),
     issueService: () => mockIssueService,
     logActivity: mockLogActivity,
     projectService: () => mockProjectService,
diff --git a/server/src/__tests__/issue-comment-cancel-routes.test.ts b/server/src/__tests__/issue-comment-cancel-routes.test.ts
index ca070233511..b95a8e27d8d 100644
--- a/server/src/__tests__/issue-comment-cancel-routes.test.ts
+++ b/server/src/__tests__/issue-comment-cancel-routes.test.ts
@@ -52,6 +52,19 @@ vi.mock("../services/index.js", () => ({
     listCompanyIds: vi.fn(async () => ["company-1"]),
   }),
   issueApprovalService: () => ({}),
+  issueReferenceService: () => ({
+    deleteDocumentSource: async () => undefined,
+    diffIssueReferenceSummary: () => ({
+      addedReferencedIssues: [],
+      removedReferencedIssues: [],
+      currentReferencedIssues: [],
+    }),
+    emptySummary: () => ({ outbound: [], inbound: [] }),
+    listIssueReferenceSummary: async () => ({ outbound: [], inbound: [] }),
+    syncComment: async () => undefined,
+    syncDocument: async () => undefined,
+    syncIssue: async () => undefined,
+  }),
   issueService: () => mockIssueService,
   logActivity: mockLogActivity,
   projectService: () => ({}),
diff --git a/server/src/__tests__/issue-comment-reopen-routes.test.ts b/server/src/__tests__/issue-comment-reopen-routes.test.ts
index 2ef33886348..959ebb572a6 100644
--- a/server/src/__tests__/issue-comment-reopen-routes.test.ts
+++ b/server/src/__tests__/issue-comment-reopen-routes.test.ts
@@ -76,6 +76,19 @@ vi.mock("../services/index.js", () => ({
   heartbeatService: () => mockHeartbeatService,
   instanceSettingsService: () => mockInstanceSettingsService,
   issueApprovalService: () => ({}),
+  issueReferenceService: () => ({
+    deleteDocumentSource: async () => undefined,
+    diffIssueReferenceSummary: () => ({
+      addedReferencedIssues: [],
+      removedReferencedIssues: [],
+      currentReferencedIssues: [],
+    }),
+    emptySummary: () => ({ outbound: [], inbound: [] }),
+    listIssueReferenceSummary: async () => ({ outbound: [], inbound: [] }),
+    syncComment: async () => undefined,
+    syncDocument: async () => undefined,
+    syncIssue: async () => undefined,
+  }),
   issueService: () => mockIssueService,
   logActivity: mockLogActivity,
   projectService: () => ({}),
@@ -103,6 +116,19 @@ function registerModuleMocks() {
     heartbeatService: () => mockHeartbeatService,
     instanceSettingsService: () => mockInstanceSettingsService,
     issueApprovalService: () => ({}),
+    issueReferenceService: () => ({
+      deleteDocumentSource: async () => undefined,
+      diffIssueReferenceSummary: () => ({
+        addedReferencedIssues: [],
+        removedReferencedIssues: [],
+        currentReferencedIssues: [],
+      }),
+      emptySummary: () => ({ outbound: [], inbound: [] }),
+      listIssueReferenceSummary: async () => ({ outbound: [], inbound: [] }),
+      syncComment: async () => undefined,
+      syncDocument: async () => undefined,
+      syncIssue: async () => undefined,
+    }),
     issueService: () => mockIssueService,
     logActivity: mockLogActivity,
     projectService: () => ({}),
diff --git a/server/src/__tests__/issue-dependency-wakeups-routes.test.ts b/server/src/__tests__/issue-dependency-wakeups-routes.test.ts
index 896253eb773..d0266328a37 100644
--- a/server/src/__tests__/issue-dependency-wakeups-routes.test.ts
+++ b/server/src/__tests__/issue-dependency-wakeups-routes.test.ts
@@ -45,6 +45,19 @@ vi.mock("../services/index.js", () => ({
     listCompanyIds: vi.fn(),
   }),
   issueApprovalService: () => ({}),
+  issueReferenceService: () => ({
+    deleteDocumentSource: async () => undefined,
+    diffIssueReferenceSummary: () => ({
+      addedReferencedIssues: [],
+      removedReferencedIssues: [],
+      currentReferencedIssues: [],
+    }),
+    emptySummary: () => ({ outbound: [], inbound: [] }),
+    listIssueReferenceSummary: async () => ({ outbound: [], inbound: [] }),
+    syncComment: async () => undefined,
+    syncDocument: async () => undefined,
+    syncIssue: async () => undefined,
+  }),
   issueService: () => mockIssueService,
   logActivity: vi.fn(async () => undefined),
   projectService: () => ({
diff --git a/server/src/__tests__/issue-document-restore-routes.test.ts b/server/src/__tests__/issue-document-restore-routes.test.ts
index a0caa578b3a..ebf232f0df1 100644
--- a/server/src/__tests__/issue-document-restore-routes.test.ts
+++ b/server/src/__tests__/issue-document-restore-routes.test.ts
@@ -42,6 +42,19 @@ vi.mock("../services/index.js", () => ({
     getGeneral: vi.fn(async () => ({ feedbackDataSharingPreference: "prompt" })),
   }),
   issueApprovalService: () => ({}),
+  issueReferenceService: () => ({
+    deleteDocumentSource: async () => undefined,
+    diffIssueReferenceSummary: () => ({
+      addedReferencedIssues: [],
+      removedReferencedIssues: [],
+      currentReferencedIssues: [],
+    }),
+    emptySummary: () => ({ outbound: [], inbound: [] }),
+    listIssueReferenceSummary: async () => ({ outbound: [], inbound: [] }),
+    syncComment: async () => undefined,
+    syncDocument: async () => undefined,
+    syncIssue: async () => undefined,
+  }),
   issueService: () => mockIssueService,
   logActivity: mockLogActivity,
   projectService: () => ({}),
@@ -68,6 +81,19 @@ function registerModuleMocks() {
       getGeneral: vi.fn(async () => ({ feedbackDataSharingPreference: "prompt" })),
     }),
     issueApprovalService: () => ({}),
+    issueReferenceService: () => ({
+      deleteDocumentSource: async () => undefined,
+      diffIssueReferenceSummary: () => ({
+        addedReferencedIssues: [],
+        removedReferencedIssues: [],
+        currentReferencedIssues: [],
+      }),
+      emptySummary: () => ({ outbound: [], inbound: [] }),
+      listIssueReferenceSummary: async () => ({ outbound: [], inbound: [] }),
+      syncComment: async () => undefined,
+      syncDocument: async () => undefined,
+      syncIssue: async () => undefined,
+    }),
     issueService: () => mockIssueService,
     logActivity: mockLogActivity,
     projectService: () => ({}),
diff --git a/server/src/__tests__/issue-execution-policy-routes.test.ts b/server/src/__tests__/issue-execution-policy-routes.test.ts
index d3c279775c9..60f1d6e1bcb 100644
--- a/server/src/__tests__/issue-execution-policy-routes.test.ts
+++ b/server/src/__tests__/issue-execution-policy-routes.test.ts
@@ -50,6 +50,19 @@ function registerModuleMocks() {
       listCompanyIds: vi.fn(async () => ["company-1"]),
     }),
     issueApprovalService: () => ({}),
+    issueReferenceService: () => ({
+      deleteDocumentSource: async () => undefined,
+      diffIssueReferenceSummary: () => ({
+        addedReferencedIssues: [],
+        removedReferencedIssues: [],
+        currentReferencedIssues: [],
+      }),
+      emptySummary: () => ({ outbound: [], inbound: [] }),
+      listIssueReferenceSummary: async () => ({ outbound: [], inbound: [] }),
+      syncComment: async () => undefined,
+      syncDocument: async () => undefined,
+      syncIssue: async () => undefined,
+    }),
     issueService: () => mockIssueService,
     logActivity: vi.fn(async () => undefined),
     projectService: () => ({}),
diff --git a/server/src/__tests__/issue-feedback-routes.test.ts b/server/src/__tests__/issue-feedback-routes.test.ts
index 6a2df50d94d..57f65e0e8e0 100644
--- a/server/src/__tests__/issue-feedback-routes.test.ts
+++ b/server/src/__tests__/issue-feedback-routes.test.ts
@@ -70,6 +70,19 @@ function registerModuleMocks() {
     heartbeatService: () => mockHeartbeatService,
     instanceSettingsService: () => mockInstanceSettingsService,
     issueApprovalService: () => ({}),
+    issueReferenceService: () => ({
+      deleteDocumentSource: async () => undefined,
+      diffIssueReferenceSummary: () => ({
+        addedReferencedIssues: [],
+        removedReferencedIssues: [],
+        currentReferencedIssues: [],
+      }),
+      emptySummary: () => ({ outbound: [], inbound: [] }),
+      listIssueReferenceSummary: async () => ({ outbound: [], inbound: [] }),
+      syncComment: async () => undefined,
+      syncDocument: async () => undefined,
+      syncIssue: async () => undefined,
+    }),
     issueService: () => mockIssueService,
     logActivity: mockLogActivity,
     projectService: () => ({}),
diff --git a/server/src/__tests__/issue-telemetry-routes.test.ts b/server/src/__tests__/issue-telemetry-routes.test.ts
index bd2e1f31485..e40f88cf6d1 100644
--- a/server/src/__tests__/issue-telemetry-routes.test.ts
+++ b/server/src/__tests__/issue-telemetry-routes.test.ts
@@ -42,6 +42,19 @@ function registerModuleMocks() {
     }),
     instanceSettingsService: () => ({}),
     issueApprovalService: () => ({}),
+    issueReferenceService: () => ({
+      deleteDocumentSource: async () => undefined,
+      diffIssueReferenceSummary: () => ({
+        addedReferencedIssues: [],
+        removedReferencedIssues: [],
+        currentReferencedIssues: [],
+      }),
+      emptySummary: () => ({ outbound: [], inbound: [] }),
+      listIssueReferenceSummary: async () => ({ outbound: [], inbound: [] }),
+      syncComment: async () => undefined,
+      syncDocument: async () => undefined,
+      syncIssue: async () => undefined,
+    }),
     issueService: () => mockIssueService,
     logActivity: vi.fn(async () => undefined),
     projectService: () => ({}),
diff --git a/server/src/__tests__/issue-update-comment-wakeup-routes.test.ts b/server/src/__tests__/issue-update-comment-wakeup-routes.test.ts
index 1b32f8fca5b..51cab44904c 100644
--- a/server/src/__tests__/issue-update-comment-wakeup-routes.test.ts
+++ b/server/src/__tests__/issue-update-comment-wakeup-routes.test.ts
@@ -53,6 +53,19 @@ vi.mock("../services/index.js", () => ({
     listCompanyIds: vi.fn(async () => ["company-1"]),
   }),
   issueApprovalService: () => ({}),
+  issueReferenceService: () => ({
+    deleteDocumentSource: async () => undefined,
+    diffIssueReferenceSummary: () => ({
+      addedReferencedIssues: [],
+      removedReferencedIssues: [],
+      currentReferencedIssues: [],
+    }),
+    emptySummary: () => ({ outbound: [], inbound: [] }),
+    listIssueReferenceSummary: async () => ({ outbound: [], inbound: [] }),
+    syncComment: async () => undefined,
+    syncDocument: async () => undefined,
+    syncIssue: async () => undefined,
+  }),
   issueService: () => mockIssueService,
   logActivity: vi.fn(async () => undefined),
   projectService: () => ({}),
@@ -94,6 +107,19 @@ function registerModuleMocks() {
       listCompanyIds: vi.fn(async () => ["company-1"]),
     }),
     issueApprovalService: () => ({}),
+    issueReferenceService: () => ({
+      deleteDocumentSource: async () => undefined,
+      diffIssueReferenceSummary: () => ({
+        addedReferencedIssues: [],
+        removedReferencedIssues: [],
+        currentReferencedIssues: [],
+      }),
+      emptySummary: () => ({ outbound: [], inbound: [] }),
+      listIssueReferenceSummary: async () => ({ outbound: [], inbound: [] }),
+      syncComment: async () => undefined,
+      syncDocument: async () => undefined,
+      syncIssue: async () => undefined,
+    }),
     issueService: () => mockIssueService,
     logActivity: vi.fn(async () => undefined),
     projectService: () => ({}),
diff --git a/server/src/__tests__/issue-workspace-command-authz.test.ts b/server/src/__tests__/issue-workspace-command-authz.test.ts
index cf9a7847b01..083bfe2190d 100644
--- a/server/src/__tests__/issue-workspace-command-authz.test.ts
+++ b/server/src/__tests__/issue-workspace-command-authz.test.ts
@@ -52,6 +52,19 @@ vi.mock("../services/index.js", () => ({
     listCompanyIds: vi.fn(async () => ["company-1"]),
   }),
   issueApprovalService: () => ({}),
+  issueReferenceService: () => ({
+    deleteDocumentSource: async () => undefined,
+    diffIssueReferenceSummary: () => ({
+      addedReferencedIssues: [],
+      removedReferencedIssues: [],
+      currentReferencedIssues: [],
+    }),
+    emptySummary: () => ({ outbound: [], inbound: [] }),
+    listIssueReferenceSummary: async () => ({ outbound: [], inbound: [] }),
+    syncComment: async () => undefined,
+    syncDocument: async () => undefined,
+    syncIssue: async () => undefined,
+  }),
   issueService: () => mockIssueService,
   logActivity: vi.fn(async () => undefined),
   projectService: () => ({}),
diff --git a/server/src/__tests__/issues-goal-context-routes.test.ts b/server/src/__tests__/issues-goal-context-routes.test.ts
index d20f5916ea8..ca40901a956 100644
--- a/server/src/__tests__/issues-goal-context-routes.test.ts
+++ b/server/src/__tests__/issues-goal-context-routes.test.ts
@@ -59,6 +59,19 @@ vi.mock("../services/index.js", () => ({
     listCompanyIds: vi.fn(async () => ["company-1"]),
   }),
   issueApprovalService: () => ({}),
+  issueReferenceService: () => ({
+    deleteDocumentSource: async () => undefined,
+    diffIssueReferenceSummary: () => ({
+      addedReferencedIssues: [],
+      removedReferencedIssues: [],
+      currentReferencedIssues: [],
+    }),
+    emptySummary: () => ({ outbound: [], inbound: [] }),
+    listIssueReferenceSummary: async () => ({ outbound: [], inbound: [] }),
+    syncComment: async () => undefined,
+    syncDocument: async () => undefined,
+    syncIssue: async () => undefined,
+  }),
   issueService: () => mockIssueService,
   logActivity: vi.fn(async () => undefined),
   projectService: () => mockProjectService,