diff --git a/editor/CMakeLists.txt b/editor/CMakeLists.txt
index 4a8faa6..d425279 100644
--- a/editor/CMakeLists.txt
+++ b/editor/CMakeLists.txt
@@ -4846,4 +4846,13 @@ target_link_libraries(step662_test PRIVATE
     tree_sitter_javascript tree_sitter_typescript
     tree_sitter_java tree_sitter_rust tree_sitter_go)
 
+add_executable(step663_test tests/step663_test.cpp)
+target_include_directories(step663_test PRIVATE src)
+target_link_libraries(step663_test PRIVATE
+    nlohmann_json::nlohmann_json
+    unofficial::tree-sitter::tree-sitter
+    tree_sitter_python tree_sitter_cpp tree_sitter_elisp
+    tree_sitter_javascript tree_sitter_typescript
+    tree_sitter_java tree_sitter_rust tree_sitter_go)
+
 # Step 12: Dear ImGui shell scaffolding created (main.cpp exists but not built due to dependencies)
diff --git a/editor/src/Sprint40IntegrationSummary.h b/editor/src/Sprint40IntegrationSummary.h
new file mode 100644
index 0000000..7908536
--- /dev/null
+++ b/editor/src/Sprint40IntegrationSummary.h
@@ -0,0 +1,45 @@
+#pragma once
+// Step 663: Sprint 40 integration + final summary
+
+#include "CrossSessionContextBridge.h"
+#include "EnergyContextStatusModel.h"
+#include "EntropyScannerModel.h"
+#include "HiveMindJobPublisher.h"
+#include "InferenceJobGenerator.h"
+#include "Phase40aIntegration.h"
+#include "PilotQueuePanelModel.h"
+
+struct Sprint40IntegrationResult {
+    bool phase40aReady = false;
+    bool entropyDetected = false;
+    bool inferenceJobGenerated = false;
+    bool pilotQueueReady = false;
+    bool bridgeReady = false;
+    bool finalSystemReady = false;
+};
+
+class Sprint40IntegrationSummary {
+public:
+    static Sprint40IntegrationResult run() {
+        Sprint40IntegrationResult out;
+        auto phase40a = Phase40aIntegration::run();
+        out.phase40aReady = phase40a.integrationReady;
+
+        auto entropy = EntropyScannerModel::scan({"a()","a()"}, {"modA","modB"}, {"x"}, {});
+        out.entropyDetected = EntropyScannerModel::shouldSuggestRefactor(entropy, 2);
+
+        auto inference = InferenceJobGenerator::generate("extract duplicates", EntropyScannerModel::entropyScore(entropy), {"a.cpp"});
+        out.inferenceJobGenerated = inference.value("success", false);
+
+        PilotQueueItem item{"job-1", "review", true, 0.2};
+        out.pilotQueueReady = PilotQueuePanelModel::needsHumanReview(item);
+
+        CrossSessionBridgeRequest req{"job-1", {"a.cpp"}, "/workspace"};
+        auto bridge = CrossSessionContextBridge::run(req);
+        out.bridgeReady = bridge.launchedMcp && bridge.intakeCalled && bridge.fedBackToEditor;
+
+        out.finalSystemReady = out.phase40aReady && out.entropyDetected && out.inferenceJobGenerated &&
+                               out.pilotQueueReady && out.bridgeReady;
+        return out;
+    }
+};
diff --git a/editor/tests/step663_test.cpp b/editor/tests/step663_test.cpp
new file mode 100644
index 0000000..8686cb2
--- /dev/null
+++ b/editor/tests/step663_test.cpp
@@ -0,0 +1,20 @@
+// Step 663: Sprint 40 integration + final summary (8 tests)
+
+#include "Sprint40IntegrationSummary.h"
+#include <iostream>
+static int p=0,f=0;
+#define T(n) { std::cout<<"  "<<#n<<"... "; }
+#define P() { std::cout<<"PASS\n"; ++p; }
+#define F(m) { std::cout<<"FAIL: "<<m<<"\n"; ++f; }
+#define C(c,m) if(!(c)){F(m);return;}
+
+void t1(){T(phase40a_ready);auto r=Sprint40IntegrationSummary::run();C(r.phase40aReady,"40a");P();}
+void t2(){T(entropy_detected);auto r=Sprint40IntegrationSummary::run();C(r.entropyDetected,"entropy");P();}
+void t3(){T(inference_job_generated);auto r=Sprint40IntegrationSummary::run();C(r.inferenceJobGenerated,"job");P();}
+void t4(){T(pilot_queue_ready);auto r=Sprint40IntegrationSummary::run();C(r.pilotQueueReady,"pilot");P();}
+void t5(){T(bridge_ready);auto r=Sprint40IntegrationSummary::run();C(r.bridgeReady,"bridge");P();}
+void t6(){T(final_system_ready);auto r=Sprint40IntegrationSummary::run();C(r.finalSystemReady,"final");P();}
+void t7(){T(final_requires_all_components);auto r=Sprint40IntegrationSummary::run();C(r.phase40aReady&&r.entropyDetected&&r.inferenceJobGenerated&&r.pilotQueueReady&&r.bridgeReady,"deps");P();}
+void t8(){T(summary_deterministic);auto a=Sprint40IntegrationSummary::run();auto b=Sprint40IntegrationSummary::run();C(a.finalSystemReady==b.finalSystemReady,"deterministic");P();}
+
+int main(){std::cout<<"Step 663: Sprint 40 integration summary\n";t1();t2();t3();t4();t5();t6();t7();t8();std::cout<<"\nResults: "<<p<<"/"<<(p+f)<<" passed\n";return f?1:0;}
diff --git a/progress.md b/progress.md
index c9afbfe..a6b147f 100644
--- a/progress.md
+++ b/progress.md
@@ -13673,3 +13673,63 @@ intake and feedback return into the originating editor session.
 - `editor/src/CrossSessionContextBridge.h` (`29` <= `600`)
 - `editor/tests/step662_test.cpp` within test-file size guidance (`26` lines)
 - Header-only architecture and naming conventions remain aligned with `ARCHITECTURE.md`
+
+### Step 663: Sprint 40 Integration + Final Summary
+**Status:** PASS (8/8 tests)
+
+Adds Sprint 40 integration summary composition across Phase 40a readiness,
+entropy detection, inference-job generation, pilot-queue review gating, and
+cross-session bridge completion.
+
+**Files added:**
+- `editor/src/Sprint40IntegrationSummary.h` - sprint integration runner
+- `editor/tests/step663_test.cpp` - 8 tests for final readiness signals
+
+**Files modified:**
+- `editor/CMakeLists.txt` - `step663_test` target
+
+**Verification run:**
+- `cmake -S editor -B editor/build-native` - PASS
+- `cmake --build editor/build-native --target step663_test step662_test` - PASS
+- `./editor/build-native/step663_test` - PASS (8/8)
+- `./editor/build-native/step662_test` - PASS (12/12) regression coverage
+
+**Architecture gate check:**
+- `editor/src/Sprint40IntegrationSummary.h` (`45` <= `600`)
+- `editor/tests/step663_test.cpp` within test-file size guidance (`20` lines)
+- Header-only architecture and naming conventions remain aligned with `ARCHITECTURE.md`
+
+## Sprint 40 Refactor Pass (Architecture Compliance)
+**Status:** PASS
+
+Completed end-of-sprint modified-files audit for Steps 654-663.
+No additional refactor was required; Sprint 40 modules were already compliant
+with architecture constraints.
+
+**Verification run (full sprint matrix):**
+- `cmake --build editor/build-native --target step654_test step655_test step656_test step657_test step658_test step659_test step660_test step661_test step662_test step663_test` - PASS
+- `./editor/build-native/step654_test` - PASS (12/12)
+- `./editor/build-native/step655_test` - PASS (12/12)
+- `./editor/build-native/step656_test` - PASS (12/12)
+- `./editor/build-native/step657_test` - PASS (12/12)
+- `./editor/build-native/step658_test` - PASS (8/8)
+- `./editor/build-native/step659_test` - PASS (12/12)
+- `./editor/build-native/step660_test` - PASS (12/12)
+- `./editor/build-native/step661_test` - PASS (12/12)
+- `./editor/build-native/step662_test` - PASS (12/12)
+- `./editor/build-native/step663_test` - PASS (8/8)
+- Sprint 40 matrix total: **112/112 passing**
+
+**Architecture gate check:**
+- `editor/src/HiveMindJobPublisher.h` (`29` <= `600`)
+- `editor/src/SwarmStatusPanelModel.h` (`46` <= `600`)
+- `editor/src/ApiaryBrowserPanelModel.h` (`36` <= `600`)
+- `editor/src/EnergyContextStatusModel.h` (`28` <= `600`)
+- `editor/src/Phase40aIntegration.h` (`38` <= `600`)
+- `editor/src/EntropyScannerModel.h` (`65` <= `600`)
+- `editor/src/InferenceJobGenerator.h` (`32` <= `600`)
+- `editor/src/PilotQueuePanelModel.h` (`39` <= `600`)
+- `editor/src/CrossSessionContextBridge.h` (`29` <= `600`)
+- `editor/src/Sprint40IntegrationSummary.h` (`45` <= `600`)
+- Sprint 40 test files remain within test-file size guidance.
+- Header-only architecture and naming conventions remain aligned with `ARCHITECTURE.md`