docs: require companion docs PRs for user-visible changes

.github/PULL_REQUEST_TEMPLATE.md

@@ -7,6 +7,25 @@
 <!-- Link to the issue this PR addresses (if applicable) -->
 Fixes #
 
+## Documentation
+
+<!--
+If this PR changes user-visible behavior, config keys, ports, CLI flags,
+URLs, or installation steps, link matching PRs in the docs repos below.
+Internal refactors, bug fixes with no observable change, and test-only
+changes are exempt — just check the "not required" box and say why.
+
+See CONTRIBUTING.md → Documentation Requirements for the full rules.
+-->
+
+**Companion docs PRs** (delete lines that don't apply):
+- Wiki: maziggy/bambuddy-wiki#___
+- Website: maziggy/bambuddy-website#___
+
+**Pick one**:
+- [ ] Docs PR(s) linked above
+- [ ] No docs update required — reason: ___
+
 ## Type of Change
 
 <!-- Mark the relevant option with an "x" -->
@@ -42,7 +61,6 @@ Fixes #
 
 - [ ] My code follows the project's coding style
 - [ ] I have commented my code where necessary
-- [ ] I have updated the documentation (if needed)
 - [ ] My changes generate no new warnings
 - [ ] I have tested my changes thoroughly