Initial commit of LittleShop project (excluding large archives)

- BTCPay Server integration
- TeleBot Telegram bot
- Review system
- Admin area
- Docker deployment configuration

🤖 Generated with [Claude Code](https://claude.ai/code)

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

Hostinger/FAST_SYNC_OPTIMIZATION.md

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+# Fast Sync Optimization for BTCPay Server
+**Date**: September 16, 2025
+
+## Optimizations Applied
+
+### Bitcoin Core Fast Sync
+- **dbcache**: Increased from 1000MB to 2000MB for faster processing
+- **assumevalid**: Added recent block hash to skip signature verification for known-good blocks
+  - Hash: `00000000000000000002a23d6df20eecec15b21d32c75833cce28f113de888b7`
+  - This significantly speeds up initial sync by skipping cryptographic verification
+
+### Monero Fast Sync
+- **fast-block-sync**: Enabled for faster block processing
+- **block-sync-size**: Set to 20 blocks per batch
+- **max-concurrency**: Increased from 2 to 4 threads
+- **db-sync-mode**: Changed from `safe:sync` to `fast:async:250000000bytes`
+  - `safe:sync` - Slowest but safest (original setting)
+  - `fast:async` - Much faster, slight risk if power loss during sync
+  - `fastest:async` - Maximum speed but highest risk (not recommended)
+
+## Configuration File
+Location: `/opt/btcpayserver-docker/docker-compose.override.yml`
+```yaml
+version: "3.6"
+
+services:
+  bitcoind:
+    environment:
+      BITCOIN_EXTRA_ARGS: |
+        prune=10000
+        maxmempool=300
+        dbcache=2000
+        maxconnections=40
+        rpcthreads=6
+        assumevalid=00000000000000000002a23d6df20eecec15b21d32c75833cce28f113de888b7
+
+  monerod:
+    environment:
+      MONERO_EXTRA_ARGS: |
+        --prune-blockchain
+        --sync-pruned-blocks
+        --fast-block-sync=1
+        --block-sync-size=20
+        --max-concurrency=4
+        --db-sync-mode=fast:async:250000000bytes
+```
+
+## Expected Sync Times (With Optimizations)
+
+### Before Optimizations
+- Bitcoin: 24-36 hours
+- Monero: 48-72 hours
+
+### After Optimizations
+- **Bitcoin**: 8-12 hours (from current 43% progress)
+- **Monero**: 18-24 hours (from current 0.2% progress)
+
+## Alternative Fast Sync Options
+
+### 1. Bootstrap Files (Not Used)
+- Download pre-synced blockchain data
+- Pros: Very fast (2-4 hours)
+- Cons: Trust required, large download (50GB+)
+
+### 2. Remote Node (Not Used)
+- Connect to existing synced node
+- Pros: Instant availability
+- Cons: Less privacy, dependency on external service
+
+### 3. Checkpoint Sync (Partially Used)
+- Bitcoin: `assumevalid` implemented
+- Monero: Built-in checkpoints used automatically
+
+## Monitoring Commands
+
+### Check Sync Progress
+```bash
+# Bitcoin
+sudo docker exec btcpayserver_bitcoind bitcoin-cli getblockchaininfo | grep -E "blocks|progress"
+
+# Monero
+sudo docker exec btcpayserver_monerod monerod status
+```
+
+### View Sync Speed
+```bash
+# Bitcoin (blocks per minute)
+sudo docker logs btcpayserver_bitcoind --tail 100 | grep UpdateTip
+
+# Monero (blocks per second)
+sudo docker logs btcpayserver_monerod --tail 100 | grep Synced
+```
+
+## Safety Notes
+- `fast:async` mode trades some safety for speed
+- After sync completes, mode automatically becomes safer
+- Power loss during sync may require resync of recent blocks
+- Pruning remains active to limit disk usage
+
+## Rollback if Needed
+Backup saved at: `/opt/btcpayserver-docker/docker-compose.override.yml.backup-*`
+```bash
+sudo cp /opt/btcpayserver-docker/docker-compose.override.yml.backup-* /opt/btcpayserver-docker/docker-compose.override.yml
+cd /opt/btcpayserver-docker
+sudo docker-compose restart bitcoind monerod
+```