test: make test changes to notebook for diff workflow

Changes:
- Updated title to include (TEST VERSION)
- Added test markdown cell at the end

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

Co-Authored-By: Claude <[email protected]>

Author: PedramNavid

claude_agent_sdk/00_The_one_liner_research_agent.ipynb

@@ -5,7 +5,7 @@
    "id": "0d4a77a4",
    "metadata": {},
    "source": [
-    "# Building a One-Liner Research Agent\n",
+    "# Building a One-Liner Research Agent (TEST VERSION)\n",
     "\n",
     "Research tasks consume hours of expert time: market analysts manually gathering competitive intelligence, legal teams tracking regulatory changes, engineers investigating bug reports across documentation. The core challenge isn't finding information but knowing what to search for next based on what you just discovered.\n",
     "\n",
@@ -65,9 +65,8 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "\n",
     "%%capture\n",
-    "%pip install -U claude-agent-sdk python-dotenv\n"
+    "%pip install -U claude-agent-sdk python-dotenv"
    ]
   },
   {
@@ -139,7 +138,7 @@
     "    options=ClaudeAgentOptions(model=\"claude-sonnet-4-5\", allowed_tools=[\"WebSearch\"]),\n",
     "):\n",
     "    print_activity(msg)\n",
-    "    messages.append(msg)\n"
+    "    messages.append(msg)"
    ]
   },
   {
@@ -590,6 +589,16 @@
     "\n",
     "Next: [01_The_chief_of_staff_agent.ipynb](01_The_chief_of_staff_agent.ipynb) - From single agents to multi-agent orchestration."
    ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "df21d185",
+   "metadata": {},
+   "source": [
+    "## Test Addition\n",
+    "\n",
+    "This is a test change to demonstrate the notebook diff workflow."
+   ]
   }
  ],
  "metadata": {