fix: move context.Context to first parameter in startTraceCmd and startTraceCmdWithTimeout

Per Go convention, context.Context must always be the first parameter. Updated
both function signatures and all call sites in tracelifecycle.go and tui_test.go.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/internal/tui/tui_test.go b/internal/tui/tui_test.go
index a685719..5f007e4 100644
--- a/internal/tui/tui_test.go
+++ b/internal/tui/tui_test.go
@@ -202,7 +202,7 @@ func TestQuitKeyMatchesSingleBindingWithoutPanic(t *testing.T) {
 }
 
 func TestStartTraceCmdLaunchesBeforeStarterReturns(t *testing.T) {
-	cmd := startTraceCmd(func(context.Context) error { return nil }, context.Background())
+	cmd := startTraceCmd(context.Background(), func(context.Context) error { return nil })
 	msg := cmd()
 	if _, ok := msg.(TracingStartedMsg); !ok {
 		t.Fatalf("expected TracingStartedMsg, got %T", msg)
@@ -210,7 +210,7 @@ func TestStartTraceCmdLaunchesBeforeStarterReturns(t *testing.T) {
 }
 
 func TestStartTraceCmdEmitsErrorMsg(t *testing.T) {
-	cmd := startTraceCmd(func(context.Context) error { return errors.New("trace failed") }, context.Background())
+	cmd := startTraceCmd(context.Background(), func(context.Context) error { return errors.New("trace failed") })
 	msg := cmd()
 	traceErr, ok := msg.(TracingErrorMsg)
 	if !ok {
@@ -235,7 +235,7 @@ func TestStartTraceCmdTimeoutEmitsErrorMsg(t *testing.T) {
 	}
 
 	// Use a short timeout so the test finishes quickly.
-	cmd := startTraceCmdWithTimeout(blocker, ctx, 50*time.Millisecond)
+	cmd := startTraceCmdWithTimeout(ctx, blocker, 50*time.Millisecond)
 	msg := cmd()
 
 	traceErr, ok := msg.(TracingErrorMsg)
@@ -265,7 +265,7 @@ func TestStartTraceCmdContextCancelledBeforeTimeoutReturnsNil(t *testing.T) {
 	// Cancel ctx immediately so the starter exits before the timeout.
 	cancel()
 
-	cmd := startTraceCmdWithTimeout(blocker, ctx, 5*time.Second)
+	cmd := startTraceCmdWithTimeout(ctx, blocker, 5*time.Second)
 	msg := cmd()
 
 	if msg != nil {