Clean up unused files, organize structure, update docs

- Delete obsolete files: data_fetcher_old.py, market_old.py, base_strategy.py (root),
  strategy_sma_cross.py, and old architecture remnants (address_monitor.py,
  position_monitor.py, trade_log.py, wallet_data.py, whale_tracker.py)
- Delete zero-byte Docker artifacts and runtime files (clp_hedger.log,
  clp_hedger/hedge_status.json)
- Move one-off utility scripts to scripts/ directory
- Move example/template files to .temp/ directory
- Update .gitignore: add entries for clp_hedger.log, clp_hedger/hedge_status.json,
  Docker layer hash files, Using, Running, and backups/
- Update .dockerignore: add clp_hedger.log, clp_hedger/hedge_status.json, backups/
- Create example config files: _data/strategies.json.example,
  _data/backtesting_conf.json.example, _data/coin_precision.json.example
- Update GEMINI.md: remove outdated session summaries and duplicate review section
- Update review.md: add cleanup status section, update remaining recommendations
- Update MIGRATION_PLAN.md: mark completed phases, update file references
- Update DOCKER_MIGRATION_GUIDE.md: update import_csv.py path reference

scripts/list_coins.py

@@ -0,0 +1,61 @@
+import json
+import logging
+from hyperliquid.info import Info
+from hyperliquid.utils import constants
+
+# Import the setup function from our new logging module
+from logging_utils import setup_logging
+
+def save_coin_precision_data():
+    """
+    Connects to the Hyperliquid API, gets a list of all listed coins
+    and their trade size precision, and saves it to a JSON file.
+    """
+    logging.info("Fetching asset information from Hyperliquid...")
+    
+    try:
+        info = Info(constants.MAINNET_API_URL, skip_ws=True)
+        meta_data = info.meta_and_asset_ctxs()[0]
+        all_assets = meta_data.get("universe", [])
+
+        if not all_assets:
+            logging.error("Could not retrieve asset information from the meta object.")
+            return
+
+        # Create a dictionary mapping the coin name to its precision
+        coin_precision_map = {}
+        for asset in all_assets:
+            name = asset.get("name")
+            precision = asset.get("szDecimals")
+            
+            if name is not None and precision is not None:
+                coin_precision_map[name] = precision
+        
+        # Save the dictionary to a JSON file
+        file_name = "_data/coin_precision.json"
+        with open(file_name, 'w', encoding='utf-8') as f:
+            # indent=4 makes the file readable; sort_keys keeps it organized
+            json.dump(coin_precision_map, f, indent=4, sort_keys=True)
+
+        logging.info(f"Successfully saved coin precision data to '{file_name}'")
+        
+        # Provide an example of how to use the generated file
+        # print("\n--- Example Usage in another script ---")
+        # print("import json")
+        # print("\n# Load the data from the file")
+        # print("with open('coin_precision.json', 'r') as f:")
+        # print("    precision_data = json.load(f)")
+        # print("\n# Access the precision for a specific coin")
+        # print("eth_precision = precision_data.get('ETH')")
+        # print("print(f'The size precision for ETH is: {eth_precision}')")
+
+
+    except Exception as e:
+        logging.error(f"An error occurred: {e}")
+
+
+if __name__ == "__main__":
+    # Setup logging with a specified level and process name
+    setup_logging('off', 'CoinLister')
+    save_coin_precision_data()
+