refactor: use N << 10/20 style for readable byte-size constants (#2186)

* refactor: use N << 10/20 style for readable byte-size constants

Replace misleading `2 << N` bit shifts with `N << 10` (KiB) or
`N << 20` (MiB) style so the human-readable size is immediately
obvious. Keep `2 << 20` where it already reads naturally as 2 MiB.
No functional change — all values are identical.

* refactor: annotate constants with readable size equivalents

Co-authored-by: Jakub Novák <kubus.novak@gmail.com>

Author: arkamar

packages/envd/internal/logs/bufferedEvents.go

@@ -7,7 +7,7 @@ import (
 )
 
 const (
-	defaultMaxBufferSize = 2 << 15
+	defaultMaxBufferSize = 64 << 10 // 64 KiB
 	defaultTimeout       = 2 * time.Second
 )
 

packages/envd/internal/services/process/handler/handler.go

@@ -28,8 +28,8 @@ const (
 	defaultNice      = 0
 	defaultOomScore  = 100
 	outputBufferSize = 64
-	stdChunkSize     = 2 << 14
-	ptyChunkSize     = 2 << 13
+	stdChunkSize     = 32 << 10 // 32 KiB
+	ptyChunkSize     = 16 << 10 // 16 KiB
 )
 
 type ProcessExit struct {

packages/orchestrator/internal/sandbox/template/storage.go

@@ -15,7 +15,7 @@ import (
 
 const (
 	oldMemfileHugePageSize = 2 << 20 // 2 MiB
-	oldRootfsBlockSize     = 2 << 11 // 4 KiB
+	oldRootfsBlockSize     = 4 << 10 // 4 KiB
 )
 
 type Storage struct {

packages/shared/pkg/storage/header/diff.go

@@ -8,9 +8,9 @@ import (
 )
 
 const (
-	PageSize        = 2 << 11
-	HugepageSize    = 2 << 20
-	RootfsBlockSize = 2 << 11
+	PageSize        = 4 << 10 // 4 KiB
+	HugepageSize    = 2 << 20 // 2 MiB
+	RootfsBlockSize = 4 << 10 // 4 KiB
 )
 
 var tracer = otel.Tracer("github.com/e2b-dev/infra/packages/shared/pkg/storage/header")

packages/shared/pkg/storage/storage_google.go

@@ -34,7 +34,7 @@ import (
 const (
 	googleReadTimeout              = 10 * time.Second
 	googleOperationTimeout         = 5 * time.Second
-	googleBufferSize               = 2 << 21
+	googleBufferSize               = 4 << 20 // 4 MiB
 	googleInitialBackoff           = 10 * time.Millisecond
 	googleMaxBackoff               = 10 * time.Second
 	googleBackoffMultiplier        = 2