fan-profile: drop redundant 2>/dev/null on mapping function call

map_profile_to_strategy never writes to stderr — the suppression was
silencing nothing real and would mislead a future reader.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

scripts/fan-profile.sh

@@ -1,17 +1,51 @@
 #!/bin/bash
 
+STATE_FILE="${XDG_STATE_HOME:-$HOME/.local/state}/fan-profile-auto"
+
+map_profile_to_strategy() {
+    case "$1" in
+        power-saver) echo lazy ;;
+        balanced)    echo medium ;;
+        performance) echo agile ;;
+        *)           return 1 ;;
+    esac
+}
+
 if [ "$1" = "--menu" ]; then
-    CHOICE=$(fw-fanctrl print list 2>/dev/null \
-        | grep "^-" \
-        | sed 's/^- //' \
+    STRATS=$(fw-fanctrl print list 2>/dev/null | grep "^-" | sed 's/^- //')
+    CHOICE=$(printf 'auto\n%s\n' "$STRATS" \
         | wofi --dmenu \
                --prompt "Fan Strategy:" \
                --width 260 \
-               --height 300 \
+               --height 320 \
                --hide-scroll \
                --no-actions \
                --insensitive)
-    [ -n "$CHOICE" ] && fw-fanctrl use "$CHOICE" && pkill -RTMIN+9 waybar
+    [ -z "$CHOICE" ] && exit
+    if [ "$CHOICE" = "auto" ]; then
+        mkdir -p "$(dirname "$STATE_FILE")"
+        touch "$STATE_FILE"
+        PROFILE=$(powerprofilesctl get 2>/dev/null) \
+            && MAPPED=$(map_profile_to_strategy "$PROFILE") \
+            && fw-fanctrl use "$MAPPED"
+    else
+        rm -f "$STATE_FILE"
+        fw-fanctrl use "$CHOICE"
+    fi
+    pkill -RTMIN+9 waybar
+    exit
+fi
+
+if [ -f "$STATE_FILE" ]; then
+    PROFILE=$(powerprofilesctl get 2>/dev/null)
+    MAPPED=$(map_profile_to_strategy "$PROFILE")
+    if [ -n "$MAPPED" ]; then
+        ACTIVE=$(fw-fanctrl print 2>/dev/null | awk -F"'" '/^Strategy:/{print $2}')
+        [ "$ACTIVE" != "$MAPPED" ] && fw-fanctrl use "$MAPPED" >/dev/null 2>&1
+        printf '{"text": "󰈐  auto", "tooltip": "Auto fan strategy\\nProfile: %s → %s\\nClick to change", "class": "auto"}\n' "$PROFILE" "$MAPPED"
+    else
+        printf '{"text": "󰈐  auto (?)", "tooltip": "Auto: power-profiles-daemon unreachable or unknown profile\\nClick to change", "class": "auto"}\n'
+    fi
     exit
 fi