Issue: Serena configuration file location and class simplification

Issue: Serena configuration file location and class simplification: a task in LegoFlow-SWE (Harbor dataset). Current behavior: Serena looks for its configuration file serena config.yml exclusively in the repository root directory (where Serena is installed or cloned). When using Serena via uvx or…

The task

**Current behavior:** Serena looks for its configuration file `serena_config.yml` exclusively in the repository root directory (where Serena is installed or cloned). When using Serena via `uvx` or other package managers that install into temporary directories, users cannot edit the configuration file because the…

Part of Lego-X/LegoFlow-SWE.