diff --git a/CMakeLists.txt b/CMakeLists.txt
index cb3abd3..a09314c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -102,6 +102,12 @@ add_subdirectory(submodules/dsptap)
 
 add_library(ambitap INTERFACE)
 add_library(AmbiTap::ambitap ALIAS ambitap)
+# The family-wide alias, per the namespace convention in taphouse's README: one
+# `tap::<library>` sub-namespace per repo, and the CMake alias matches it. The
+# older spelling above stays so existing consumers keep working; prefer
+# `tap::ambi` in new code. Note this is a build-tree alias only -- the
+# installed config package still exports under its own namespace.
+add_library(tap::ambi ALIAS ambitap)
 target_include_directories(ambitap INTERFACE
     $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
     $<INSTALL_INTERFACE:include>)
diff --git a/book/book.toml b/book/book.toml
index 5c200e0..f9248de 100644
--- a/book/book.toml
+++ b/book/book.toml
@@ -11,4 +11,9 @@ create-missing = false
 [output.html]
 default-theme = "rust"
 git-repository-url = "https://github.com/tap/AmbiTap"
-site-url = "/AmbiTap/book/"
+# The Pages site is assembled in docs.yml as site/ with this book at the ROOT
+# (and the Doxygen API reference under site/api/), so the book is served from
+# /AmbiTap/, not /AmbiTap/book/. site-url feeds the absolute links in the
+# generated 404.html; pointing it at a path the site does not have gave the
+# 404 page a broken "home" link.
+site-url = "/AmbiTap/"
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 8fb621a..3ae34f9 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -1,8 +1,16 @@
 include(FetchContent)
+# Fetched by git clone at a commit pin, which is the form every sibling *Tap repo
+# uses (DspTap/MuTap/RatioTap/SampleRateTap). This repo previously declared a
+# release *tarball* instead; that is the one mechanism an HTTPS-proxied build
+# environment blocks, so AmbiTap was the only library in the family whose tests
+# could not be configured behind a proxy. Note the family currently runs two
+# GTest versions -- this repo on v1.15.2, the other four on v1.14.0. Unifying
+# them is a deliberate call for whoever needs it, not a side effect of this
+# mechanism change.
 FetchContent_Declare(googletest
-    URL https://github.com/google/googletest/archive/refs/tags/v1.15.2.tar.gz
-    URL_HASH SHA256=7b42b4d6ed48810c5362c265a17faebe90dc2373c885e5216439d37927f02926
-    DOWNLOAD_EXTRACT_TIMESTAMP TRUE
+    GIT_REPOSITORY https://github.com/google/googletest.git
+    # Commit pin, not the movable tag: tags can be re-pointed upstream.
+    GIT_TAG b514bdc898e2951020cbdca1304b75f5950d1f59 # v1.15.2
     # Prefer an already-installed GTest (offline builds, distro packages).
     FIND_PACKAGE_ARGS NAMES GTest
 )