style: gofmt normalization — no logic changes

gofmt -w across the controller tree (46 files) so gofmt -l is empty — disarms the
formatting landmine where a targeted edit + accidental gofmt -w swept ~46 unrelated
files. Pure formatting: whitespace + gofmt's optional-semicolon removal in reflowed
inline closures. One doc comment reworded ('' -> 'the empty string') to avoid gofmt's
Go-1.19 doc-comment typographic substitition ('' -> curly quote) muddying its meaning.
No build/vet/test behavior change.

controller/internal/appexport/export_additive_test.go

@@ -189,7 +189,7 @@ func TestExport_HDDMountBasenameCollisionFailsLoud(t *testing.T) {
 
 	prov := &hddProvider{
 		rtProvider: &rtProvider{stackDir: srcStack, stacksDir: t.TempDir(), deployed: true},
-		mounts: []string{a, b}, hddPath: hdd,
+		mounts:     []string{a, b}, hddPath: hdd,
 	}
 	drive := t.TempDir()
 	e := NewExporter(prov, log.New(io.Discard, "", 0), "test")
@@ -229,7 +229,7 @@ func TestFabRoundTrip_UserdataPlacement(t *testing.T) {
 
 	prov := &hddProvider{
 		rtProvider: &rtProvider{stackDir: srcStack, stacksDir: t.TempDir(), deployed: true},
-		mounts: []string{ud}, hddPath: hdd,
+		mounts:     []string{ud}, hddPath: hdd,
 	}
 	drive := t.TempDir()
 	e := NewExporter(prov, lg, "test")
@@ -249,7 +249,7 @@ func TestFabRoundTrip_UserdataPlacement(t *testing.T) {
 
 	prov2 := &hddProvider{
 		rtProvider: &rtProvider{stackDir: srcStack, stacksDir: t.TempDir(), deployed: false},
-		hddPath: hdd,
+		hddPath:    hdd,
 	}
 	e2 := NewExporter(prov2, lg, "test")
 	if err := e2.StartImport(ImportRequest{FABPath: fabPath}); err != nil {