hotfix(docs): anchor exclude_docs README pattern to repo root

The exclude_docs entry meant to hide the GitHub-facing repo README used
the bare pattern 'README.md'. exclude_docs patterns are gitignore-style,
so an unanchored name matches at every depth — silently excluding every
README.md the same-dir plugin serves as a docs page. On the published
0.20 site this 404'd the System Test Suite (/tests/), the OSMO Lab
Admin Guide (/osmo/), and all autonomy package reference pages, while
non-README sources (e.g. tests/ci-cd-orchestrator.md) kept working.

Anchor the pattern as '/README.md' so only the repo root is excluded.
Verified with a local mkdocs build: tests/, osmo/, and package README
pages are generated again and the root URL still serves the redirect.

VERSION 0.20.6 -> 0.20.7 with a dated release-notes section per the
hotfix rule from #418.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: andrewjong

.env

@@ -12,7 +12,7 @@ PROJECT_NAME="airstack"
 # If you've run ./airstack.sh setup, then this will auto-generate from the git commit hash every time a change is made 
 # to a Dockerfile or docker-compose.yaml file. Otherwise this can also be set explicitly to make a release version.
 # auto-generated from git commit hash
-VERSION="0.20.6"
+VERSION="0.20.7"
 # Image-tag discriminator ONLY (appears in the image tag suffix, e.g. ..._robot-x86-64_dev).
 # No Dockerfile consumes it: "prebuilt" does NOT bake the built ros_ws into the image today —
 # a real prebuilt (workspace-baked) stage is future work. Keep "dev" (mounted code, built live).

docs/release_notes/index.md

@@ -21,6 +21,15 @@ its own notes. -->
 
 - Nothing yet.
 
+## 0.20.7 — 2026-08-30
+
+- **Fixed 404s on every README-sourced docs page.** The `exclude_docs`
+  pattern intended to hide the repo-root `README.md` used gitignore
+  semantics, so it silently excluded *every* `README.md` in the tree —
+  404ing the System Test Suite (`/tests/`), OSMO Lab Admin Guide
+  (`/osmo/`), and all autonomy package reference pages. The pattern is
+  now anchored to the repo root (`/README.md`).
+
 ## 0.20.6 — 2026-08-29
 
 - **Release notes now carry a dated section per hotfix.** Added the

mkdocs.yml

@@ -6,8 +6,11 @@ site_dir: ../site
 site_url: "https://docs.theairlab.org/docs/" # Trailing slash is recommended
 exclude_docs: |
   # The repo README is GitHub-facing; the site's home page is docs/index.md,
-  # and same-dir would otherwise collide on the root URL.
-  README.md
+  # and same-dir would otherwise collide on the root URL. Patterns are
+  # gitignore-style: the leading slash anchors this to the repo root only —
+  # a bare README.md would exclude every package/tests/osmo README the nav
+  # serves as pages.
+  /README.md
   **/ros_ws/build
   **/docker/Foxglove
   **/ros_ws/install