diff --git a/.continue/rules/project.md b/.continue/rules/project.md
index 0796e98..f757333 100644
--- a/.continue/rules/project.md
+++ b/.continue/rules/project.md
@@ -7,12 +7,17 @@ description: mtm-ddwipe project conventions
 - Keep shell scripts Bash-based when Bash is already used by the project.
 - Preserve the current behavior of the main script:
   - `mtm-ddwipe`: wipe devices.
+- Strengthen destructive-action safety checks in `mtm-ddwipe` when making changes.
+- Keep `mtm-ddwipe` interactive by default unless a change explicitly adds a safe opt-in flag.
 - Keep user-facing messages short, clear, and in English.
 - Prefer minimal, focused changes that do not alter the intent of the existing scripts, unless the script behavior is intentionally updated.
 - Maintain `.continue/rules/project.md` whenever project conventions or script behavior change.
 - `mtm-ddwipe` is a small Bash script with helper functions.
 - Keep the host and line-number removal behavior intact.
 - `mtm-ddwipe` must print a usage line and support `-h`/`--help`.
+- Validate that wipe targets are real block devices before operating on them.
+- Prefer explicit, short confirmation prompts before destructive operations.
+- Keep error and help messages short, clear, and in English.
 
 # Project identity
 - Main script: `mtm-ddwipe`