Make setup ISO-only

Remove legacy online installer entrypoints, collapse migrations for 4.0, and move setup responsibilities into target-side system, hardware, and user commands.

install/user/hardware/asus/fix-audio-mixer.sh

@@ -0,0 +1,13 @@
+# Fix audio volume on Asus ROG laptops by using a soft mixer.
+
+if omarchy-hw-asus-rog; then
+  mkdir -p ~/.config/wireplumber/wireplumber.conf.d/
+  cp "$OMARCHY_PATH/default/wireplumber/wireplumber.conf.d/alsa-soft-mixer.conf" ~/.config/wireplumber/wireplumber.conf.d/
+  rm -rf ~/.local/state/wireplumber/default-routes
+
+  # Unmute the Master control on the ALC285 card (often muted by default)
+  card=$(aplay -l 2>/dev/null | grep -i "ALC285" | head -1 | sed 's/card \([0-9]*\).*/\1/')
+  if [[ -n $card ]]; then
+    amixer -c "$card" set Master 80% unmute 2>/dev/null
+  fi
+fi

install/user/hardware/asus/fix-mic.sh

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+# Fix internal mic gain on ASUS ROG laptops with Realtek ALC285.
+# The mic boost is way too high by default, causing clipping.
+# Sets levels and stores ALSA state so it persists across reboots.
+
+if omarchy-hw-asus-rog; then
+  for card in /proc/asound/card*/codec*; do
+    if grep -q "ALC285" "$card" 2>/dev/null; then
+      cardnum=$(echo "$card" | grep -oP 'card\K\d+')
+      amixer -c "$cardnum" set 'Internal Mic Boost' 0 >/dev/null 2>&1 || true
+      amixer -c "$cardnum" set 'Capture' 70% unmute >/dev/null 2>&1 || true
+      sudo alsactl store "$cardnum" 2>/dev/null || true
+      break
+    fi
+  done
+fi

install/user/hardware/bluetooth.sh

@@ -0,0 +1,13 @@
+mkdir -p ~/.config/wireplumber/wireplumber.conf.d/
+cp "$OMARCHY_PATH/default/wireplumber/wireplumber.conf.d/bluetooth-a2dp-autoconnect.conf" ~/.config/wireplumber/wireplumber.conf.d/
+
+# Quickshell.Bluetooth has no Agent API, so the omarchy.bluetooth plugin
+# can't answer the auth prompts bluez issues during pair(). bt-agent registers
+# a NoInputNoOutput agent on the system bus so pair() actually completes.
+mkdir -p ~/.config/systemd/user/
+cp "$OMARCHY_PATH/config/systemd/user/bt-agent.service" ~/.config/systemd/user/
+if declare -F omarchy_user_systemctl_enable >/dev/null; then
+  omarchy_user_systemctl_enable bt-agent.service
+else
+  systemctl --user enable bt-agent.service
+fi

install/user/hardware/framework/fix-f13-amd-audio-input.sh

@@ -0,0 +1,5 @@
+AMD_AUDIO_CARD=$(pactl list cards 2>/dev/null | grep -B20 "Family 17h/19h" | grep "Name: " | awk '{print $2}' || true)
+
+if [[ -n $AMD_AUDIO_CARD ]]; then
+  pactl set-card-profile "$AMD_AUDIO_CARD" "HiFi (Mic1, Mic2, Speaker)" 2>/dev/null || true
+fi

install/user/hardware/recover-internal-monitor.sh

@@ -0,0 +1 @@
+systemctl --user enable omarchy-recover-internal-monitor.service