fix: bulletproof command handler + auto-restart + README overhaul

- sendStreamingMessage: replaced broken simulated streaming with reliable
  HTML send + stripped plain text fallback (was silently failing)
- Added global unhandledRejection guard (catches async errors that
  sequentialize middleware would swallow)
- restart.sh: auto-restart loop on crash (3s delay) instead of bare node
- README: comprehensive update with self-learning memory, curiosity engine,
  memory architecture diagram, updated command table, updated comparison

restart.sh

@@ -1,11 +1,30 @@
 #!/bin/bash
-cd /home/uroma2/zcode-cli-x
+# restart.sh — safe bot restart with process tracking
+# Usage: bash restart.sh
+
+cd "$(dirname "$0")"
+
+# Kill any existing zcode process
 pkill -f "bin/zcode.js" 2>/dev/null
 sleep 1
-node bin/zcode.js --no-cli &
+
+# Ensure log directory exists
+mkdir -p logs
+
+# Start with auto-restart loop
+(
+  while true; do
+    node bin/zcode.js --no-cli >> logs/zcode.log 2>&1
+    EXIT=$?
+    echo "[$(date -Iseconds)] Process exited ($EXIT), restarting in 3s..." >> logs/zcode.log
+    sleep 3
+  done
+) &
 disown
-sleep 3
+
+sleep 2
+
 echo "=== Process ==="
 ps aux | grep "bin/zcode" | grep -v grep
 echo "=== Recent logs ==="
-tail -25 logs/zcode.log
+tail -10 logs/zcode.log