chore: clean up dotfiles and add gitignore whitelist

Switch to whitelist-based .gitignore to only track essential configs:
nvim, yazi, kitty, zsh, ideavim, karabiner, tmux, scripts, starship.
Remove history, compiled files, and plugin dirs from tracking.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

scripts/start-kanata.sh

@@ -0,0 +1,36 @@
+#!/bin/bash
+
+# Kanata Startup Script
+# Starts Kanata with proper configuration and logging
+
+KANATA_CONFIG="$HOME/Library/Application Support/kanata/kanata.kbd"
+LOG_FILE="$HOME/Library/Logs/kanata.log"
+
+# Create log directory if it doesn't exist
+mkdir -p "$(dirname "$LOG_FILE")"
+
+# Check if kanata is already running
+if pgrep -x "kanata" > /dev/null; then
+    echo "$(date): Kanata is already running" >> "$LOG_FILE"
+    exit 0
+fi
+
+# Check if config file exists
+if [ ! -f "$KANATA_CONFIG" ]; then
+    echo "$(date): ERROR - Kanata config file not found: $KANATA_CONFIG" >> "$LOG_FILE"
+    exit 1
+fi
+
+# Start Kanata
+echo "$(date): Starting Kanata with config: $KANATA_CONFIG" >> "$LOG_FILE"
+
+# Run kanata in the background with logging
+/opt/homebrew/bin/kanata -c "$KANATA_CONFIG" >> "$LOG_FILE" 2>&1 &
+
+# Get the PID
+KANATA_PID=$!
+
+# Save PID for easier management
+echo "$KANATA_PID" > "$HOME/.kanata.pid"
+
+echo "$(date): Kanata started with PID: $KANATA_PID" >> "$LOG_FILE"