Enhance data integration and transcript parsing

- Improved date parsing in fetch_and_store_chat_data to support multiple formats and added error logging for unparseable dates.
- Enhanced parse_and_store_transcript_messages to handle empty transcripts and expanded message pattern recognition for both User and Assistant.
- Implemented intelligent splitting of transcripts based on detected patterns and timestamps, with fallback mechanisms for unrecognized formats.
- Updated documentation for Celery and Redis setup, troubleshooting, and project structure.
- Added markdown linting configuration and scripts for code formatting.
- Updated Nginx configuration to change the web server port.
- Added xlsxwriter dependency for Excel file handling in project requirements.

.vscode/settings.json

@@ -43,5 +43,12 @@
 		"notebook.source.organizeImports": "explicit"
 	},
 	"notebook.formatOnSave.enabled": true,
-	"prettier.requireConfig": true
+    "prettier.requireConfig": true,
+    "markdownlint.config": {
+        "default": true,
+    },
+    "[markdown]": {
+        "editor.defaultFormatter": "DavidAnson.vscode-markdownlint",
+        "editor.formatOnSave": true
+    }
 }