diff --git a/docs/ARCHITECTURE.md b/docs/ARCHITECTURE.md
index 3caa54b..bd48560 100644
--- a/docs/ARCHITECTURE.md
+++ b/docs/ARCHITECTURE.md
@@ -102,12 +102,13 @@ harb/
 │   ├── test/          # Forge tests
 │   └── foundry.toml   # via_ir = true required
 ├── services/
-│   └── ponder/        # Indexer service
-│       ├── ponder.schema.ts
-│       ├── src/
-│       │   ├── helpers/stats.ts  # Ring buffer logic
-│       │   ├── lm.ts             # LiquidityManager indexing
-│       │   └── stake.ts          # Stake indexing
+│   ├── ponder/        # Indexer service
+│   │   ├── ponder.schema.ts
+│   │   ├── src/
+│   │   │   ├── helpers/stats.ts  # Ring buffer logic
+│   │   │   ├── lm.ts             # LiquidityManager indexing
+│   │   │   └── stake.ts          # Stake indexing
+│   └── txnBot/        # Automation bot: calls recenter() and payTax() on profitable opportunities
 ├── landing/           # Landing page (Vue 3)
 │   ├── src/
 │   │   ├── components/  # LiveStats, KFooter, WalletCard, etc.