Add Claude Code settings and alias

- Add cc alias for claude --internet
- Add Claude settings.json with plugins and statusline config
- Add custom statusline.sh script with context usage display

dot_claude/executable_statusline.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+input=$(cat)
+
+MODEL=$(echo "$input" | jq -r '.model.display_name // "Claude"')
+PERCENT_USED=$(echo "$input" | jq -r '.context_window.used_percentage // 0' | xargs printf "%.1f")
+
+# Color coding based on context usage
+if (( $(echo "$PERCENT_USED > 80" | bc -l) )); then
+    COLOR="\033[31m"  # Red for high usage
+elif (( $(echo "$PERCENT_USED > 50" | bc -l) )); then
+    COLOR="\033[33m"  # Yellow for moderate usage
+else
+    COLOR="\033[32m"  # Green for low usage
+fi
+RESET="\033[0m"
+
+echo -e "[$MODEL] ${COLOR}Context: ${PERCENT_USED}%${RESET}"