diff --git a/.github/workflows/backend-tests.yml b/.github/workflows/backend-tests.yml
index 64bad0d0a3..c51c723dbc 100644
--- a/.github/workflows/backend-tests.yml
+++ b/.github/workflows/backend-tests.yml
@@ -39,9 +39,6 @@ jobs:
       - name: Build
         run: go build -v ./cmd/kandev
 
-      - name: Run go vet
-        run: go vet ./...
-
       - name: Run golangci-lint
         uses: golangci/golangci-lint-action@v9
         with:
@@ -51,14 +48,14 @@ jobs:
 
       - name: Run tests with coverage
         run: |
-          go test -v -race -coverprofile=coverage.out -covermode=atomic -json ./... > test-results.json 2>&1 || true
-          go test -v -race -coverprofile=coverage.out -covermode=atomic ./... 2>&1 | tee test-output.txt
+          set -o pipefail
+          go test -v -race -coverprofile=coverage.out -covermode=atomic -json ./... 2>&1 | tee test-results.json
 
       - name: Generate test report
         uses: robherley/go-test-action@v0
         if: always()
         with:
-          moduleDirectory: apps/backend
+          fromJSONFile: apps/backend/test-results.json
 
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v4
@@ -76,5 +73,5 @@ jobs:
           name: test-results
           path: |
             apps/backend/coverage.out
-            apps/backend/test-output.txt
+            apps/backend/test-results.json
           retention-days: 30
diff --git a/apps/backend/internal/agentctl/server/process/interactive_runner.go b/apps/backend/internal/agentctl/server/process/interactive_runner.go
index 79d7654fa3..f51646271d 100644
--- a/apps/backend/internal/agentctl/server/process/interactive_runner.go
+++ b/apps/backend/internal/agentctl/server/process/interactive_runner.go
@@ -102,6 +102,7 @@ type interactiveProcess struct {
 	// Lifecycle
 	stopOnce   sync.Once
 	stopSignal chan struct{}
+	waitDone   chan struct{} // closed when wait() returns (cmd.Wait completed)
 	mu         sync.Mutex
 }
 
@@ -254,6 +255,7 @@ func (r *InteractiveRunner) Start(ctx context.Context, req InteractiveStartReque
 		idleTimeout:   idleTimeout,
 		lastState:     StateUnknown,
 		stopSignal:    make(chan struct{}),
+		waitDone:      make(chan struct{}),
 		// Store start parameters for deferred initialization
 		started:  false,
 		startCmd: req.Command,
@@ -473,19 +475,14 @@ func (r *InteractiveRunner) Stop(ctx context.Context, processID string) error {
 	if proc.cmd != nil && proc.cmd.Process != nil {
 		_ = proc.cmd.Process.Signal(syscall.SIGTERM)
 
-		// Wait for graceful exit, then force kill
-		done := make(chan struct{})
-		go func() {
-			_ = proc.cmd.Wait()
-			close(done)
-		}()
-
+		// Wait for the wait() goroutine to finish (it calls cmd.Wait).
+		// If it doesn't exit in time, force-kill the process.
 		select {
 		case <-ctx.Done():
 			_ = proc.cmd.Process.Kill()
 		case <-time.After(2 * time.Second):
 			_ = proc.cmd.Process.Kill()
-		case <-done:
+		case <-proc.waitDone:
 			// Process exited cleanly
 		}
 	}
@@ -837,6 +834,7 @@ func (r *InteractiveRunner) handleStateChange(proc *interactiveProcess, state Ag
 // 2. Stuck processes should be terminated via Stop() which sends SIGTERM/SIGKILL
 // 3. Adding a timeout here would leave the process unreachable and create leaks
 func (r *InteractiveRunner) wait(proc *interactiveProcess) {
+	defer close(proc.waitDone)
 	err := proc.cmd.Wait()
 	exitCode := 0
 	status := types.ProcessStatusExited
diff --git a/apps/backend/internal/orchestrator/executor/executor_test.go b/apps/backend/internal/orchestrator/executor/executor_test.go
index 8aa336529a..4dbc0ee33c 100644
--- a/apps/backend/internal/orchestrator/executor/executor_test.go
+++ b/apps/backend/internal/orchestrator/executor/executor_test.go
@@ -2,6 +2,7 @@ package executor
 
 import (
 	"context"
+	"sync/atomic"
 	"testing"
 	"time"
 
@@ -748,11 +749,11 @@ func TestLaunchPreparedSession_ExistingWorkspace_StartAgent(t *testing.T) {
 	}
 	repo.sessions[session.ID] = session
 
-	startAgentCalled := false
+	var startAgentCalled atomic.Bool
 	descriptionSet := ""
 	agentManager := &mockAgentManager{
 		startAgentProcessFunc: func(ctx context.Context, id string) error {
-			startAgentCalled = true
+			startAgentCalled.Store(true)
 			if id != "exec-existing" {
 				t.Errorf("Expected execution ID exec-existing, got %s", id)
 			}
@@ -794,7 +795,7 @@ func TestLaunchPreparedSession_ExistingWorkspace_StartAgent(t *testing.T) {
 	// Wait for async goroutine
 	time.Sleep(100 * time.Millisecond)
 
-	if !startAgentCalled {
+	if !startAgentCalled.Load() {
 		t.Error("Expected StartAgentProcess to be called")
 	}
 }
diff --git a/apps/backend/pkg/claudecode/client_test.go b/apps/backend/pkg/claudecode/client_test.go
index d10ce5fbff..6f8436250e 100644
--- a/apps/backend/pkg/claudecode/client_test.go
+++ b/apps/backend/pkg/claudecode/client_test.go
@@ -13,6 +13,31 @@ import (
 	"github.com/kandev/kandev/internal/common/logger"
 )
 
+// syncBuffer is a thread-safe bytes.Buffer for tests where a goroutine writes
+// and the test goroutine reads.
+type syncBuffer struct {
+	mu  sync.Mutex
+	buf bytes.Buffer
+}
+
+func (sb *syncBuffer) Write(p []byte) (int, error) {
+	sb.mu.Lock()
+	defer sb.mu.Unlock()
+	return sb.buf.Write(p)
+}
+
+func (sb *syncBuffer) Len() int {
+	sb.mu.Lock()
+	defer sb.mu.Unlock()
+	return sb.buf.Len()
+}
+
+func (sb *syncBuffer) Bytes() []byte {
+	sb.mu.Lock()
+	defer sb.mu.Unlock()
+	return append([]byte(nil), sb.buf.Bytes()...)
+}
+
 func newTestLogger() *logger.Logger {
 	log, _ := logger.NewLogger(logger.LoggingConfig{Level: "error", Format: "json", OutputPath: "stdout"})
 	return log
@@ -194,8 +219,8 @@ func TestClient_NoHandlerAutoReject(t *testing.T) {
 	// Create a control request message
 	input := `{"type":"control_request","request_id":"req123","request":{"subtype":"can_use_tool","tool_name":"Bash"}}` + "\n"
 
-	var buf bytes.Buffer
-	client := NewClient(&buf, strings.NewReader(input), newTestLogger())
+	buf := &syncBuffer{}
+	client := NewClient(buf, strings.NewReader(input), newTestLogger())
 
 	// No request handler set - should auto-reject