diff --git a/README.md b/README.md
index 36cb65b..300fedb 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,9 @@
 
 🐈 **nanobot** is an **ultra-lightweight** personal AI assistant inspired by [Clawdbot](https://github.com/openclaw/openclaw) 
 
-⚡️ Delivers core agent functionality in just **~4,000** lines of code — **99% smaller** than Clawdbot's 430k+ lines.
+⚡️ Delivers core agent functionality in just **~3,400** lines of code — **99% smaller** than Clawdbot's 430k+ lines.
+
+📏 Real-time line count: **3,359 lines** (run `bash core_agent_lines.sh` to verify anytime)
 
 ## 📢 News
 
@@ -25,7 +27,7 @@
 
 ## Key Features of nanobot:
 
-🪶 **Ultra-Lightweight**: Just ~4,000 lines of code — 99% smaller than Clawdbot - core functionality.
+🪶 **Ultra-Lightweight**: Just ~3,400 lines of core agent code — 99% smaller than Clawdbot.
 
 🔬 **Research-Ready**: Clean, readable code that's easy to understand, modify, and extend for research.
 
diff --git a/core_agent_lines.sh b/core_agent_lines.sh
new file mode 100755
index 0000000..3f5301a
--- /dev/null
+++ b/core_agent_lines.sh
@@ -0,0 +1,21 @@
+#!/bin/bash
+# Count core agent lines (excluding channels/, cli/, providers/ adapters)
+cd "$(dirname "$0")" || exit 1
+
+echo "nanobot core agent line count"
+echo "================================"
+echo ""
+
+for dir in agent agent/tools bus config cron heartbeat session utils; do
+  count=$(find "nanobot/$dir" -maxdepth 1 -name "*.py" -exec cat {} + | wc -l)
+  printf "  %-16s %5s lines\n" "$dir/" "$count"
+done
+
+root=$(cat nanobot/__init__.py nanobot/__main__.py | wc -l)
+printf "  %-16s %5s lines\n" "(root)" "$root"
+
+echo ""
+total=$(find nanobot -name "*.py" ! -path "*/channels/*" ! -path "*/cli/*" ! -path "*/providers/*" | xargs cat | wc -l)
+echo "  Core total:     $total lines"
+echo ""
+echo "  (excludes: channels/, cli/, providers/)"
diff --git a/pyproject.toml b/pyproject.toml
index 0c59f66..2a952a1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,12 +29,10 @@ dependencies = [
     "rich>=13.0.0",
     "croniter>=2.0.0",
     "python-telegram-bot>=21.0",
+    "lark-oapi>=1.0.0",
 ]
 
 [project.optional-dependencies]
-feishu = [
-    "lark-oapi>=1.0.0",
-]
 dev = [
     "pytest>=7.0.0",
     "pytest-asyncio>=0.21.0",
diff --git a/test_docker.sh b/tests/test_docker.sh
old mode 100755
new mode 100644
similarity index 97%
rename from test_docker.sh
rename to tests/test_docker.sh
index a90e080..1e55133
--- a/test_docker.sh
+++ b/tests/test_docker.sh
@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 set -euo pipefail
+cd "$(dirname "$0")/.." || exit 1
 
 IMAGE_NAME="nanobot-test"