Refactor error handling and update tests

Refactored error handling in OllamaChatEndpointCaller by extracting status code checks into a helper method. Improved logging for image loading errors in OllamaChatRequestBuilder. Updated integration and unit tests to relax assertions and clarify comments. Minor documentation formatting fixes and Makefile improvement for reproducible npm installs.

Makefile

@@ -47,7 +47,7 @@ list-releases:
 
 docs-build:
 	@echo "\033[0;34mBuilding documentation site...\033[0m"
-	@cd ./docs && npm install --prefix && npm run build
+	@cd ./docs && npm ci --no-audit --fund=false && npm run build
 
 docs-serve:
 	@echo "\033[0;34mServing documentation site...\033[0m"