Lode Cold-Start Interview

Configure Lode's two-layer config: global user preferences and per-project identity.

Lode separates concerns between what's shared (knowledge vault path, reporting preferences) and what's project-specific (project name, project slug). The global config lives at ~/.lode/config.yaml; project identity lives at {project-root}/.lode/config.yaml. The interview detects context and writes to the appropriate target.