feat: Add High Availability setup roadmap and scripts

Created comprehensive HA roadmap with 6 phases:
- Phase 1: Warm standby (CURRENT - manual failover)
- Phase 2: Database replication
- Phase 3: Health monitoring
- Phase 4: Reverse proxy + floating IP
- Phase 5: Automated failover
- Phase 6: Geographic redundancy

Includes:
- Decision gates based on capital and stability
- Cost-benefit analysis
- Scripts for healthcheck, failover, DB sync
- Recommendation to defer full HA until capital > $5k

Secondary server ready at 72.62.39.24 for emergency manual failover.

Related: User concern about system uptime, but full HA complexity
not justified at current scale (~$600 capital). Revisit in Q1 2026.

ha-setup/sync-db-daily.sh

@@ -0,0 +1,76 @@
+#!/bin/bash
+#
+# Daily Database Sync from Primary to Secondary
+# Run on PRIMARY server via cron
+#
+
+set -eu
+
+PRIMARY_HOST="localhost"
+SECONDARY_HOST="root@72.62.39.24"
+PROJECT_DIR="/home/icke/traderv4"
+BACKUP_FILE="/tmp/trading_bot_backup_$(date +%Y%m%d_%H%M%S).sql"
+LOG_FILE="/var/log/trading-bot-db-sync.log"
+
+log() {
+  echo "[$(date +'%Y-%m-%d %H:%M:%S')] $*" | tee -a "$LOG_FILE"
+}
+
+# Telegram notification
+telegram_notify() {
+  local message="$1"
+  if [ -f "${PROJECT_DIR}/.env" ]; then
+    source "${PROJECT_DIR}/.env"
+    curl -s -X POST "https://api.telegram.org/bot${TELEGRAM_BOT_TOKEN}/sendMessage" \
+      -d chat_id="${TELEGRAM_CHAT_ID}" \
+      -d text="📊 DB Sync: ${message}" \
+      -d parse_mode="HTML" > /dev/null
+  fi
+}
+
+main() {
+  log "🔄 Starting daily database backup..."
+  
+  # Create backup
+  if docker exec trading-bot-postgres pg_dump -U postgres trading_bot_v4 > "$BACKUP_FILE" 2>>"$LOG_FILE"; then
+    local size=$(du -h "$BACKUP_FILE" | cut -f1)
+    log "✅ Backup created: $BACKUP_FILE ($size)"
+  else
+    log "❌ Backup failed!"
+    telegram_notify "⚠️ Database backup failed on primary"
+    exit 1
+  fi
+  
+  # Transfer to secondary
+  log "📤 Transferring to secondary..."
+  if rsync -avz --compress "$BACKUP_FILE" "${SECONDARY_HOST}:/tmp/" >> "$LOG_FILE" 2>&1; then
+    log "✅ Transfer complete"
+  else
+    log "❌ Transfer failed!"
+    telegram_notify "⚠️ Database transfer to secondary failed"
+    exit 1
+  fi
+  
+  # Restore on secondary
+  log "📥 Restoring on secondary..."
+  if ssh "${SECONDARY_HOST}" "docker exec -i trading-bot-postgres psql -U postgres trading_bot_v4 < /tmp/$(basename $BACKUP_FILE)" >> "$LOG_FILE" 2>&1; then
+    log "✅ Restore complete on secondary"
+  else
+    log "❌ Restore failed on secondary!"
+    telegram_notify "⚠️ Database restore failed on secondary"
+    exit 1
+  fi
+  
+  # Cleanup old backups (keep last 7 days)
+  find /tmp -name "trading_bot_backup_*.sql" -mtime +7 -delete
+  ssh "${SECONDARY_HOST}" "find /tmp -name 'trading_bot_backup_*.sql' -mtime +7 -delete"
+  
+  log "🎉 Daily sync completed successfully"
+  
+  # Only notify on first sync of the day or if there were issues
+  if [ "$(date +%H)" -eq 2 ]; then
+    telegram_notify "✅ Daily database sync completed"
+  fi
+}
+
+main "$@"