diff --git a/domains/pr-workflow/skills/pr-guidelines/repos/core.md b/domains/pr-workflow/skills/pr-guidelines/repos/core.md
new file mode 100644
index 00000000..22224cb9
--- /dev/null
+++ b/domains/pr-workflow/skills/pr-guidelines/repos/core.md
@@ -0,0 +1,16 @@
+---
+repo: core
+parent: pr-guidelines
+---
+
+## Reviewing Pull Requests
+
+### Resolving Review Threads
+
+Applies to agents in particular, where the cost of getting this wrong is a thread closed before its reviewer read it.
+
+- **Never resolve, minimize or hide a comment a human wrote, unless that human explicitly asks you to.** Collapsing a comment takes it out of the default view and asserts the matter is settled, which is a judgement belonging to whoever raised it. Doing it on a principal's behalf makes that assertion in their name.
+- **Never resolve a review thread before human reviewers have had time to read new comments and respond.** This is a hard rule, not a convention.
+- **Do not resolve threads unilaterally.** Prefer to let the human reviewers engaging with a thread close it once they have determined the raised issues are resolved.
+- **Leave a thread open if it may be relevant, educational, or of future reference value.** Most threads should still be closed to avoid clutter.
+- **Do not re-post on an unresolved thread that has not been updated.** Resolving every thread is not a merge requirement in this repo, unlike Mobile, so an unresolved thread is not by itself a signal that anything is outstanding.
diff --git a/domains/pr-workflow/skills/pr-guidelines/repos/metamask-extension.md b/domains/pr-workflow/skills/pr-guidelines/repos/metamask-extension.md
index cc7eec91..c3b139f5 100644
--- a/domains/pr-workflow/skills/pr-guidelines/repos/metamask-extension.md
+++ b/domains/pr-workflow/skills/pr-guidelines/repos/metamask-extension.md
@@ -237,6 +237,16 @@ When NOT to use:
 - Non-blocking suggestions
 - Nitpicks
 
+### Resolving Review Threads
+
+Applies to agents in particular, where the cost of getting this wrong is a thread closed before its reviewer read it.
+
+- **Never resolve, minimize or hide a comment a human wrote, unless that human explicitly asks you to.** Collapsing a comment takes it out of the default view and asserts the matter is settled, which is a judgement belonging to whoever raised it. Doing it on a principal's behalf makes that assertion in their name.
+- **Never resolve a review thread before human reviewers have had time to read new comments and respond.** This is a hard rule, not a convention.
+- **Do not resolve threads unilaterally.** Prefer to let the human reviewers engaging with a thread close it once they have determined the raised issues are resolved.
+- **Leave a thread open if it may be relevant, educational, or of future reference value.** Most threads should still be closed to avoid clutter.
+- **Do not re-post on an unresolved thread that has not been updated.** Resolving every thread is not a merge requirement in this repo, unlike Mobile, so an unresolved thread is not by itself a signal that anything is outstanding.
+
 ## Receiving Feedback
 
 ### Be Open to Other Perspectives