Fix lint errors for users

Bump version to 1.5.1

Move langchain dependency to dev as we only need it for UI

Removed 'langchain-openai' from dependencies and added it to the build dependencies.

Bump version from 1.4.22 to 1.4.23

Bump version from 1.4.21 to 1.4.22

Bump version to 1.4.21

Bump version from 1.4.19 to 1.4.20

Implement markdown conversion for log entries

Added a method to convert markdown text to HTML and updated log entry processing to use this method.

Bump version to 1.4.18

Bump version from 1.4.16 to 1.4.17