feat: migrate to i3blocks and autotiling-rs

home/oli/bin/i3blocks/cpu

@@ -0,0 +1,70 @@
+#!/usr/bin/env bash
+#
+# Displays per-core CPU usage as Unicode block characters.
+# Uses a temp file to track deltas between intervals.
+#
+# ▄ = load below 50%
+# █ = load at or above 50%
+# Colors escalate through warn1 -> warn2 -> crit thresholds.
+
+PREV_FILE="/tmp/i3blocks_cpu_prev"
+
+. ~/bin/i3blocks/_utils
+# Read current idle and total ticks for each core from /proc/stat
+declare -a cur_idle cur_total
+i=0
+while IFS=' ' read -r cpu user nice system idle iowait irq softirq rest; do
+    [[ "$cpu" =~ ^cpu[0-9]+$ ]] || continue
+    cur_idle[$i]=$((idle + iowait))
+    cur_total[$i]=$((user + nice + system + idle + iowait + irq + softirq))
+    ((i++))
+done < /proc/stat
+num_cores=$i
+
+# Load previous snapshot if available
+declare -a prev_idle prev_total
+if [[ -f "$PREV_FILE" ]]; then
+    i=0
+    while IFS=' ' read -r p_idle p_total; do
+        prev_idle[$i]=$p_idle
+        prev_total[$i]=$p_total
+        ((i++))
+    done < "$PREV_FILE"
+fi
+
+# Save current snapshot for next run
+for ((i=0; i<num_cores; i++)); do
+    echo "${cur_idle[$i]} ${cur_total[$i]}"
+done > "$PREV_FILE"
+
+# Build output — one block character per core
+output=""
+for ((i=0; i<num_cores; i++)); do
+    delta_total=$(( cur_total[i] - ${prev_total[$i]:-0} ))
+    delta_idle=$(( cur_idle[i] - ${prev_idle[$i]:-0} ))
+
+    if [[ $delta_total -eq 0 ]]; then
+        pct=0
+    else
+        pct=$(( (delta_total - delta_idle) * 100 / delta_total ))
+    fi
+
+    color=""
+    if [[ $pct -ge 50 ]]; then
+        color=$crit_bg
+        char="█"
+    elif [[ $pct -ge 15 ]]; then
+        color=$warn1_bg
+        char="▄"
+    else
+        char="_"
+    fi
+
+    if [[ -n "$color" ]]; then
+        output+="<span color=\"${color}\">${char}</span>"
+    else
+        output+="${char}"
+    fi
+done
+
+echo -e "CPU $output\n"