docs: fix remaining references to the moved build docs

Updates the two referrers outside the docs tree that the move left behind, and
excludes .claude/ from the link checker — the agent worktrees under it are full
checkouts, so it was walking every in-flight branch and reporting their links
as ours.

scripts/build-windows-cross.sh

@@ -8,7 +8,7 @@
 # it can bundle the NSIS installer from a Linux host.
 #
 # Playback on Windows: video renders via WebView2 and audio via the webview
-# <audio> backend (WebviewAudioBackend) — see docs/build-windows.md.
+# <audio> backend (WebviewAudioBackend) — see docs/build/build-windows.md.
 #
 # Requirements (present in the Docker windows-cross target / unified builder):
 #   - rustup target x86_64-pc-windows-msvc

scripts/check-doc-links.sh

@@ -56,6 +56,10 @@ EXCLUDES=(
   "./src-tauri/gen/*"
   "./src-tauri/target/*"
   "./.git/*"
+  # Agent/dev scratch worktrees (.claude/worktrees is itself git-ignored). These
+  # are full checkouts of the repo, so without this the checker walks every
+  # in-flight branch and reports its links as if they were ours.
+  "./.claude/*"
 )
 
 # Targets that do not exist in the repo *by design* because the publish-docs job