finalized gather article document

Author: wasin-waeosri

.github/copilot-instructions.md

@@ -39,6 +39,7 @@ Before running setup commands, confirm the project structure should match this l
 ├── images/
 ├── LICENSE.md
 ├── README.md
+├── Article_Gather.md
 ├── requirements.txt
 ├── .venv/
 └── notebook/
@@ -61,6 +62,7 @@ Notes:
 
    - `README.md`
    - `LICENSE.md`
+   - `Article_Gather.md`
    - `.gitignore` (must include `.venv/` and `notebook/.env` entries)
    - `images/` (folder must exist)
    - `notebook/` (folder must exist)

Article_Gather.md

@@ -54,15 +54,17 @@ Please your LSEG representative or account manager for the Data Platform Access
 ```
 .
 ├── notebook/
-│   ├── ld_notebook_async_gather.ipynb    # Main notebook
-│   ├── lseg-data.config.json             # Data Library logging configuration
-│   ├── .env                              # Platform Session credentials (not committed)
-│   └── .env.example                      # Credentials template
-├── images                                # Project images folder
-├── .venv                                 # Project Python virtual environment
-├── LICENSE.md                            # Project License
-├── requirements.txt                      # Pinned Python dependencies
-└── README.md
+│   ├── ld_notebook_async_gather.ipynb          # Main notebook
+│   ├── ld_notebook_gather_performance.ipynb    # Asyncio Gather performance notebook
+│   ├── lseg-data.config.json                   # Data Library logging configuration
+│   ├── .env                                    # Platform Session credentials (not committed)
+│   └── .env.example                            # Credentials template
+├── images                                      # Project images folder
+├── .venv                                       # Project Python virtual environment
+├── LICENSE.md                                  # Project License
+├── requirements.txt                            # Pinned Python dependencies
+├── Article_Gather.md                           # The Asyncio Gather with Data Library article document
+└── README.md                                   # The Project README file
 ```
 
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