diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md
index d3ef216..964b282 100644
--- a/.github/pull_request_template.md
+++ b/.github/pull_request_template.md
@@ -2,6 +2,12 @@
 
 <!-- What changed and why? -->
 
+## Documentation and source-version impact
+
+<!-- Keep one: None — reason | Updated — paths/source version | Dependent PR — repository and link -->
+
+Documentation impact:
+
 ## Validation
 
 - [ ] `bun run check`
diff --git a/AGENTS.md b/AGENTS.md
index d00f967..64945b6 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -9,3 +9,16 @@ human preview review.
 Before cross-repository work, read the [repository family](README.md#repository-family).
 Keep each repository's changes on separate branches, worktrees, commits, and
 pull requests, and state dependencies explicitly.
+
+Current app-help prose is authored in `scient-desktop/docs/user/`; this website
+must render an approved exact source/version instead of maintaining a second
+copy. Website Docs work owns rendering, navigation, search, accessibility,
+deployment, and truthful version/source selection. A change to app behavior or
+source prose uses a separate desktop pull request with explicit landing order.
+Do not invent the final source transport before the publishing pilot selects
+and proves it.
+
+Every pull request includes one `Documentation impact` declaration: `None —
+reason`, `Updated — paths`, or `Dependent PR — repository and link`. For Docs
+publishing changes, also name the exact source/version affected in that same
+declaration.