docs: add claude.md and avoid dashes

res/systemd/cachy-auto-update.service

@@ -28,8 +28,8 @@ TimeoutStartSec=4h
 # Deliberately *not* sandboxed the way paccache.service is: this unit installs
 # packages across the whole filesystem and downloads them over the network, so
 # ProtectSystem=, PrivateNetwork= and friends would break it. NoNewPrivileges
-# in particular has to stay off - the AUR step relies on the build account
-# calling sudo.
+# in particular has to stay off, because the AUR step relies on the build
+# account calling sudo.
 NoNewPrivileges=no
 ProtectHostname=yes
 

res/systemd/cachy-auto-update.timer

@@ -5,7 +5,7 @@ Documentation=man:cachy-auto-update(1)
 [Timer]
 # The tick is hourly, but an actual update only happens once per
 # UpdateInterval (default: daily). That combination is what makes a postponed
-# run - low battery, a game running, somebody else using pacman - retry by
+# run (low battery, a game running, somebody else using pacman) retry by
 # itself an hour later without any backoff bookkeeping.
 OnBootSec=15min
 OnCalendar=hourly