Simplify OMARCHY_INSTALL_MODE to online/offline only

Drop online-git: the new world has a single package-backed install path
that's either online (pacman pulls from omacom-pkgs.org) or offline (ISO
chroot pulls from the bundled mirror). The git-clone-and-run-installer
path is gone — boot.sh becomes a thin bootstrap that installs the
omarchy-installer package and invokes its installer.

- install/helpers/mode.sh: two modes, validation message updated. Default
  fallback is 'online' (the boot.sh path); OMARCHY_CHROOT_INSTALL=1 still
  shims to offline, OMARCHY_ONLINE_INSTALL=true still shims to online.
- install/preflight/all.sh: first-run-mode + disable-mkinitcpio gated on
  offline (offline is the from-scratch chroot path; online runs on an
  existing system).
- install/preflight/pacman.sh: DELETED. boot.sh now handles repo config
  before install.sh runs.
- install/packaging/all.sh: drop base.sh entirely. Both modes have
  base packages installed via omarchy-installer's depends before
  install.sh runs. base.sh remains on disk in case the ISO mirror build
  flow wants to invoke it directly.
- install/helpers/chroot.sh, errors.sh, post-install/finished.sh,
  config/mise-work.sh: rename mode checks to use online/offline.

install/config/mise-work.sh

@@ -10,7 +10,7 @@ EOF
 
 mise trust ~/Work/.mise.toml
 
-if install_mode_is iso-chroot; then
+if install_mode_is offline; then
   NODE_TARBALL=$(find /opt/packages -name "node-v*-linux-x64.tar.gz" -type f 2>/dev/null | head -n1)
 
   NODE_VERSION=$(basename "$NODE_TARBALL" | sed 's/node-v\(.*\)-linux-x64.tar.gz/\1/')

install/helpers/chroot.sh

@@ -1,6 +1,6 @@
-# In iso-chroot mode systemd isn't running, so skip --now and just enable.
+# In offline (ISO chroot) mode systemd isn't running, so skip --now.
 chrootable_systemctl_enable() {
-  if install_mode_is iso-chroot; then
+  if install_mode_is offline; then
     sudo systemctl enable $1
   else
     sudo systemctl enable --now $1

install/helpers/errors.sh

@@ -104,8 +104,7 @@ catch_errors() {
   while true; do
     options=()
 
-    # Retry only makes sense for online flows (git clone or package install).
-    if install_mode_is online-git || install_mode_is online-package; then
+    if install_mode_is online; then
       options+=("Retry installation")
     fi
 

install/helpers/mode.sh

@@ -1,14 +1,18 @@
-# OMARCHY_INSTALL_MODE is one of: iso-chroot, online-package, online-git
-# Back-compat shims honor the older OMARCHY_CHROOT_INSTALL and
-# OMARCHY_ONLINE_INSTALL flags during transition.
+# OMARCHY_INSTALL_MODE is one of: online, offline
+#   online  - bootstrap installed omarchy-* packages from the omacom-pkgs.org
+#             repo on an existing Arch system, then ran install.sh.
+#   offline - ISO build: archinstall pacstrapped the bundled mirror; install.sh
+#             runs in the chroot before the user's first boot.
+# Legacy OMARCHY_CHROOT_INSTALL and OMARCHY_ONLINE_INSTALL still work as
+# shims during transition.
 
 detect_install_mode() {
   if [[ -n ${OMARCHY_INSTALL_MODE:-} ]]; then
     case $OMARCHY_INSTALL_MODE in
-      iso-chroot|online-package|online-git) ;;
+      online|offline) ;;
       *)
         echo "Error: invalid OMARCHY_INSTALL_MODE=$OMARCHY_INSTALL_MODE" >&2
-        echo "       must be one of: iso-chroot, online-package, online-git" >&2
+        echo "       must be one of: online, offline" >&2
         exit 1
         ;;
     esac
@@ -17,13 +21,11 @@ detect_install_mode() {
   fi
 
   if [[ -n ${OMARCHY_CHROOT_INSTALL:-} ]]; then
-    export OMARCHY_INSTALL_MODE=iso-chroot
+    export OMARCHY_INSTALL_MODE=offline
   elif [[ -n ${OMARCHY_ONLINE_INSTALL:-} ]]; then
-    export OMARCHY_INSTALL_MODE=online-git
-  elif [[ ${OMARCHY_PATH:-} == /usr/share/omarchy ]]; then
-    export OMARCHY_INSTALL_MODE=online-package
+    export OMARCHY_INSTALL_MODE=online
   else
-    export OMARCHY_INSTALL_MODE=online-git
+    export OMARCHY_INSTALL_MODE=online
   fi
 }
 
@@ -32,22 +34,17 @@ install_mode_is() {
 }
 
 # Synchronize the legacy vars to the canonical mode so callers that still
-# check OMARCHY_CHROOT_INSTALL / OMARCHY_ONLINE_INSTALL agree with us
-# (including unsetting contradictory ones).
+# check OMARCHY_CHROOT_INSTALL / OMARCHY_ONLINE_INSTALL agree with us.
 export_legacy_mode_flags() {
   case ${OMARCHY_INSTALL_MODE:-} in
-    iso-chroot)
+    offline)
       export OMARCHY_CHROOT_INSTALL=1
       unset OMARCHY_ONLINE_INSTALL
       ;;
-    online-git)
+    online)
       export OMARCHY_ONLINE_INSTALL=true
       unset OMARCHY_CHROOT_INSTALL
       ;;
-    online-package)
-      unset OMARCHY_CHROOT_INSTALL
-      unset OMARCHY_ONLINE_INSTALL
-      ;;
   esac
 }
 

install/packaging/all.sh

@@ -1,9 +1,3 @@
-# online-package mode has omarchy + omarchy-base.packages already installed
-# via pacman, so skip the base package install.
-if ! install_mode_is online-package; then
-  run_logged $OMARCHY_INSTALL/packaging/base.sh
-fi
-
 run_logged $OMARCHY_INSTALL/packaging/fonts.sh
 run_logged $OMARCHY_INSTALL/packaging/nvim.sh
 run_logged $OMARCHY_INSTALL/packaging/icons.sh

install/post-install/finished.sh

@@ -29,7 +29,7 @@ if gum confirm --padding "0 0 0 $((PADDING_LEFT + 32))" --show-help=false --defa
   # Clear screen to hide any shutdown messages
   clear
 
-  if install_mode_is iso-chroot; then
+  if install_mode_is offline; then
     touch /var/tmp/omarchy-install-completed
     exit 0
   else

install/preflight/all.sh

@@ -1,19 +1,12 @@
 source $OMARCHY_INSTALL/preflight/guard.sh
 source $OMARCHY_INSTALL/preflight/begin.sh
 run_logged $OMARCHY_INSTALL/preflight/show-env.sh
-
-# online-git is the only mode that bootstraps pacman config; iso-chroot has
-# archinstall do it; online-package starts with pacman already configured.
-if install_mode_is online-git; then
-  run_logged $OMARCHY_INSTALL/preflight/pacman.sh
-fi
-
 run_logged $OMARCHY_INSTALL/preflight/migrations.sh
 
-# first-run-mode and disable-mkinitcpio are only meaningful when we're
-# bringing a system up from scratch (boot.sh or ISO). online-package mode
-# is bolting Omarchy onto an existing Arch install — neither applies.
-if ! install_mode_is online-package; then
+# Offline (ISO chroot) bootstraps a system from scratch and needs the
+# first-run-mode sudoers shim plus the temporary mkinitcpio hook freeze.
+# Online installs run on an existing system that already has its own users.
+if install_mode_is offline; then
   run_logged $OMARCHY_INSTALL/preflight/first-run-mode.sh
   run_logged $OMARCHY_INSTALL/preflight/disable-mkinitcpio.sh
 fi

install/preflight/pacman.sh

@@ -1,17 +0,0 @@
-if install_mode_is online-git; then
-  # Install build tools
-  omarchy-pkg-add base-devel
-
-  # Configure pacman
-  sudo cp -f $OMARCHY_PATH/default/pacman/pacman-${OMARCHY_MIRROR:-stable}.conf /etc/pacman.conf
-  sudo cp -f $OMARCHY_PATH/default/pacman/mirrorlist-${OMARCHY_MIRROR:-stable} /etc/pacman.d/mirrorlist
-
-  sudo pacman-key --recv-keys 40DFB630FF42BCFFB047046CF0134EE680CAC571 --keyserver keys.openpgp.org
-  sudo pacman-key --lsign-key 40DFB630FF42BCFFB047046CF0134EE680CAC571
-
-  sudo pacman -Sy
-  omarchy-pkg-add omarchy-keyring
-
-  # Refresh all repos
-  sudo pacman -Syyuu --noconfirm
-fi