docs: document pretend quiet and dry-run flags

README.md

@@ -45,6 +45,12 @@ Implemented commands:
 - `rc [--force] [CASTLE]`
 - `version`
 
+Global options:
+
+- `--pretend` simulates command execution without running shell/git commands.
+- `--dry-run` is an alias for `--pretend`.
+- `--quiet` suppresses status output.
+
 ### rc behavior
 
 - Runs executable scripts in `<castle>/.homesick.d/` in lexicographic order.
@@ -77,7 +83,7 @@ Historical flag/behavior parity:
 
 - [x] `pull --all`
 - [x] `rc --force`
-- [ ] Evaluate whether global `pretend`/`quiet` modes should be restored
+- [x] Global `pretend`/`quiet` modes (`--pretend`, `--dry-run`, `--quiet`)
 
 ## Behavior Suite