fix: correct four wrong behaviors and drop three dead code paths

- yt-dlp downloads claimed completion when tsp had merely queued them.
- A fresh machine opened org links in EWW, not Chrome.
- ArchWiki search raised a raw error instead of the install hint.
- The pre-commit hook kept running when its cd failed.
- Removed a second device-grouping implementation nothing called.
- Removed a redundant epub advice that ran on every file visit.
- Removed a buffer-burying clause naming a mode Emacs doesn't define.
- Moved the Hugo bindings onto the custom prefix map.
- The ArchWiki docs path is now a variable, making it testable.

1 files changed, 1 insertions, 1 deletions

diff --git a/githooks/pre-commit b/githooks/pre-commit
index 27f280c3..2c0cf0b0 100755
--- a/githooks/pre-commit
+++ b/githooks/pre-commit
@@ -5,7 +5,7 @@
 set -u
 
 REPO_ROOT="$(git rev-parse --show-toplevel)"
-cd "$REPO_ROOT"
+cd "$REPO_ROOT" || exit 1
 
 # --- 1. Secret scan ---
 # Patterns for common credentials. Scans only added lines in the staged diff.