Remove workspace state subsystem

internal/promptdebug/debug_writer.go

@@ -22,8 +22,8 @@ const (
 	debugFileMode                       = 0o600
 )
 
-// PromptDebugWriter stores explicitly requested content-rich diagnostics outside
-// the managed report workspace. A writer created without a root is disabled.
+// PromptDebugWriter stores explicitly requested content-rich diagnostics. A
+// writer created without a root is disabled.
 type PromptDebugWriter struct {
 	root string
 }