docs: keep the generic PR template as a deliberate org default

Author: lesnik512

.github/PULL_REQUEST_TEMPLATE.md

@@ -13,5 +13,4 @@
 - [ ] Type check passes (`ty`)
 - [ ] Tests pass and new behavior is covered
 - [ ] Build succeeds (`uv build`) if packaging or build config changed
-- [ ] Docs updated if behavior or public API changed
 - [ ] Repo metadata stays consistent across the three surfaces (GitHub description, pyproject `description`, profile blurb) if this touches packaging

AGENTS.md

@@ -1,8 +1,10 @@
-# modern-python org conventions
+# modern-python/.github
 
-The conventions below apply across **all** repos in the `modern-python` org, not
-just this one. [`CONTEXT.md`](CONTEXT.md) says what this repo is and owns the
-vocabulary — read it before naming a mark, a colourway, or a surface.
+Conventions for this repo. Every other repo in the org carries its own `AGENTS.md`
+and none of them read this one, so nothing here reaches them. The org-wide document
+contributors read is [`CONTRIBUTING.md`](CONTRIBUTING.md), which every repo inherits.
+[`CONTEXT.md`](CONTEXT.md) says what this repo is and owns the vocabulary — read it
+before naming a mark, a colourway, or a surface.
 
 ## Naming & branding
 
@@ -80,9 +82,9 @@ choose, and no `planning/` tree. A trivial PR (typo, dep bump, formatter, CI twe
 ships a conventional-commit title with no body ceremony.
 
 > This repo's `.github/PULL_REQUEST_TEMPLATE.md` is the **org default**, inherited by
-> every repo without a local one, and most of them still run the older `planning/`
-> convention — so it still carries the generic form. Replacing it is tracked
-> separately; write PR bodies in the shape above regardless.
+> every repo without a local one. It stays the generic form deliberately: it reaches
+> only a human opening a PR in the web UI, and it has to hold for repos on either
+> convention. Write PR bodies in the shape above regardless.
 
 Two things outlive the PR, and there are exactly two places to put them: an
 alternative **rejected** with reasoning becomes an ADR in [`docs/adr/`](docs/adr/)