Enhance shell widgets, tmux status, and git colors

- Add frecency scoring + git status boost to ^E edit widget
- Add network latency indicator to tmux status bar (wifi/wired detection, 10s cache)
- Add powerline separators between tmux status sections
- Swap git status colors: modified=bluish grey, untracked=amber (prompt, gitconfig, widget)
- Remove bold from feature branch name in prompt
- Add gw (git show) and gdm (diff against default branch) aliases

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

home/.tmux/network.sh

@@ -0,0 +1,54 @@
+#!/usr/bin/env bash
+# Network indicator for tmux status bar.
+# Pings 1.1.1.1 to measure latency, detects wired vs wifi.
+# Caches result for 10s to avoid excessive pinging.
+
+cache="${TMPDIR:-/tmp}/.tmux_network_cache"
+
+# Return cached result if fresh (<10s old)
+if [[ -f "$cache" ]]; then
+    age=$(( $(date +%s) - $(stat -f%m "$cache" 2>/dev/null || stat -c%Y "$cache" 2>/dev/null || echo 0) ))
+    if (( age < 10 )); then
+        cat "$cache"
+        exit 0
+    fi
+fi
+
+# Detect connection type
+wired=1
+if [[ "$(uname)" == "Darwin" ]]; then
+    iface=$(route -n get default 2>/dev/null | awk '/interface:/{print $2}')
+    if networksetup -listallhardwareports 2>/dev/null | grep -A1 'Wi-Fi' | grep -q "$iface"; then
+        wired=""
+    fi
+else
+    iface=$(ip route show default 2>/dev/null | awk '{print $5; exit}')
+    [[ -d "/sys/class/net/${iface}/wireless" ]] && wired=""
+fi
+
+# Measure latency
+ms=""
+if [[ "$(uname)" == "Darwin" ]]; then
+    ms=$(ping -c1 -t1 1.1.1.1 2>/dev/null | awk '/time=/{gsub(/.*time=/,""); printf "%.0f", $1}')
+else
+    ms=$(ping -c1 -W1 1.1.1.1 2>/dev/null | awk '/time=/{gsub(/.*time=/,""); printf "%.0f", $1}')
+fi
+
+# Pick icon: wired 󰈀 vs wifi 󰤨
+if [[ -n "$wired" ]]; then
+    icon="󰈀"
+else
+    icon="󰤨"
+fi
+
+if [[ -z "$ms" ]]; then
+    result="#[fg=#F40404]󰤭 --#[default]"
+elif (( ms <= 50 )); then
+    result="#[fg=#808080]${icon} ${ms}ms#[default]"
+elif (( ms <= 150 )); then
+    result="#[fg=#f88c14]${icon} ${ms}ms#[default]"
+else
+    result="#[fg=#F40404]${icon} ${ms}ms#[default]"
+fi
+
+echo "$result" | tee "$cache"