docs(rules): leave commented-out code to the definition of done

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

shared/rules/angular/references/testing-and-architecture.md

@@ -37,7 +37,6 @@
 * Avoid vague names such as `data`, `item`, `value` or `temp` when better names exist.
 * Remove dead code.
 * Remove unused imports and dependencies.
-* Remove commented-out code instead of keeping it in source files.
 * Add comments only for non-obvious decisions or public contracts.
 * Treat Angular, TypeScript and lint warnings seriously.
 * Do not suppress diagnostics without a concrete reason.

shared/rules/refactoring.md

@@ -40,7 +40,7 @@
 * Avoid unnecessary wrapper classes and indirection.
 * Prefer composition over inheritance.
 * Remove dead code when it is clearly unused.
-* Remove obsolete comments and commented-out code.
+* Remove obsolete comments.
 * Keep methods and classes focused.
 
 ## Architecture

shared/rules/wpf/references/architecture-and-quality.md

@@ -43,7 +43,6 @@
 * Prefer concrete types where no abstraction is required.
 * Use descriptive names.
 * Remove dead code.
-* Remove commented-out code.
 * Add comments only for non-obvious decisions or public contracts.
 * Treat compiler, analyzer and binding warnings seriously.
 * Do not suppress warnings without a concrete reason.